Pennock's Fiero Forum
  Technical Discussion & Questions
  4.9 M90 Supercharger (Snails pace build) (Page 1)

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version

This topic is 3 pages long:  1   2   3 
Previous Page | Next Page
next newest topic | next oldest topic
4.9 M90 Supercharger (Snails pace build) by arte444
Started on: 10-28-2012 09:55 PM
Replies: 81 (3852 views)
Last post by: engine man on 12-28-2014 05:47 PM
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post10-28-2012 09:55 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
I was inspired by what was happening in this thread.
http://www.fiero.nl/forum/Forum2/HTML/118088.html

I was going to wait until I was finished with this project before I posted because I really don't have much time to
be in the garage with my 2 year old son running around every day. I also do not have a welder at home =)

It has been 12 months now since I bought a used M90 supercharger for $60. Someone had done a poor port job on it
with the rotors still in it! Luckily they did not run it in this condition, as I received it full of metal
shavings. The metal shavings of course were in the bearing so I replaced them with some from ZZP performance.

Parts Pics
Northstar Throttle Body (TPS, IAC) Won't be using IAC or MAF



Supercharger oil
This images is larger than 153600 bytes. Click to view.

Rising rate Fuel pressure regulator
This images is larger than 153600 bytes. Click to view.

My engine before I started


Intake duct removed


Traced intake manifold gasket


Figuring out base plate to intake manifold. At this time I was unsure if I could blow through the existing throttle body. I decided against it.



Duct pan for bypass valve if I decide to use the valve.



Sitting 1/8" above coil


3100 CS130 Alternator installed



Nose bracket installed


Drive belt installed



Northstar throttle body mock up



I will end up making an adapter plate for the Supercharter inlet welded to a short piece of tubing, then welded to
an adapter plate for the northstar throttle body.

[This message has been edited by arte444 (edited 10-28-2012).]

IP: Logged
PFF
System Bot
IanT720
Member
Posts: 1696
From: Whitmore Lake, MI
Registered: Sep 2010


Feedback score:    (9)
Leave feedback

Rate this member

Report this Post10-28-2012 10:23 PM Click Here to See the Profile for IanT720Click Here to Email IanT720Send a Private Message to IanT720Edit/Delete MessageReply w/QuoteDirect Link to This Post
Whoa, interesting keep it up!

------------------
86 Fiero GTX project soon to tear up the street, My build thread! 3800sc, interior, wheels and more! http://www.fiero.nl/forum/Forum1/HTML/089483.html

IP: Logged
kikinz24
Member
Posts: 729
From: OHIO
Registered: Jun 2010


Feedback score: (2)
Leave feedback

Rate this member

Report this Post10-29-2012 10:41 AM Click Here to See the Profile for kikinz24Click Here to Email kikinz24Send a Private Message to kikinz24Edit/Delete MessageReply w/QuoteDirect Link to This Post
Mmmmm that looks yummmy....... cant wait to.see the finished project
IP: Logged
Will
Member
Posts: 13591
From: Where you least expect me
Registered: Jun 2000


Feedback score: (1)
Leave feedback





Total ratings: 234
Rate this member

Report this Post10-29-2012 11:57 AM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by arte444:

Northstar Throttle Body (TPS, IAC) Won't be using IAC or MAF

Duct pan for bypass valve if I decide to use the valve.

Nose bracket installed



Would you be willing to send the Northstar MAF my way?

You *WILL* need the bypass valve for a street car. The supercharger will run a constant pressure difference and will get very hot due to its inefficiency if you don't run a bypass.

My gut feeling is that you'll need a more substantial nose bracket.
IP: Logged
Dennis LaGrua
Member
Posts: 13865
From: Hillsborough, NJ U.S.A.
Registered: May 2000


Feedback score:    (13)
Leave feedback





Total ratings: 322
Rate this member

Report this Post10-29-2012 04:14 PM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Will:


Would you be willing to send the Northstar MAF my way?

You *WILL* need the bypass valve for a street car. The supercharger will run a constant pressure difference and will get very hot due to its inefficiency if you don't run a bypass.

My gut feeling is that you'll need a more substantial nose bracket.


I like this install but have a few comments. An M90 supercharger is only 90 cubic inches displacement and was designed for a 3800. (231 C.I.) . Here the same supercharger is being used on a 300 cubic inch engine. Will it be efficient? How many pounds of boost will it put out? In either case it has to improve the horsepower that the engine now makes. The other item is the ECM. You would have to go into the program and move the main timing table to the right by a factor of two then split it into vacuum and boost sections, then come up with a two bar map scaling sequence. It can be done but its tricky.
The other item is the BOV. Have been running my 3800SC install for three years without one, and have expereinced no ill effects. The supercharger may run slightly warmer under idle, sharp decelleration or under certain part throttle conditions but it seems as warm to the touch as any other that I've handled. I am of the impression that it was there mainly to reduce noise. Will may be right but I am not certain to what degree.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

IP: Logged
Will
Member
Posts: 13591
From: Where you least expect me
Registered: Jun 2000


Feedback score: (1)
Leave feedback





Total ratings: 234
Rate this member

Report this Post10-30-2012 09:06 AM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Dennis LaGrua:

I like this install but have a few comments. An M90 supercharger is only 90 cubic inches displacement and was designed for a 3800. (231 C.I.) . Here the same supercharger is being used on a 300 cubic inch engine. Will it be efficient? How many pounds of boost will it put out? In either case it has to improve the horsepower that the engine now makes. The other item is the ECM. You would have to go into the program and move the main timing table to the right by a factor of two then split it into vacuum and boost sections, then come up with a two bar map scaling sequence. It can be done but its tricky.


90 ci per revolution up to 12,000 RPM MFG's recommended redline RPM = 1,080,000 ci/min
150 ci/rev up to 5000 RPM = 750,000 ci/min
1.080/0.750 = 1.44
1.44 * 15 psi = 21.6 psi - 15 psi = 6.6 psi.
The blower should be able to push 6-7 psi without difficulty. That's not accounting for inefficiency, so the actual boost at that flow rate will be higher due to temp rise through the blower.

He should be able to run a '749 with $58 in 8 cylinder mode or a '730 with the aftermarket "boosted $8D" code without difficulty. Although both will require extensive tuning, that's not nearly as big a deal as trying to rescale the load tables in the stock ECM.


 
quote
Originally posted by Dennis LaGrua:
The other item is the BOV. Have been running my 3800SC install for three years without one, and have expereinced no ill effects. The supercharger may run slightly warmer under idle, sharp decelleration or under certain part throttle conditions but it seems as warm to the touch as any other that I've handled. I am of the impression that it was there mainly to reduce noise. Will may be right but I am not certain to what degree.



Get an infrared/laser thermometer and take some measurements.

[This message has been edited by Will (edited 10-30-2012).]

IP: Logged
FieroWannaBe
Member
Posts: 2231
From: Sussex, Wisconsin
Registered: Oct 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post10-30-2012 10:41 AM Click Here to See the Profile for FieroWannaBeClick Here to Email FieroWannaBeSend a Private Message to FieroWannaBeEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Dennis LaGrua:

An M90 supercharger is only 90 cubic inches displacement and was designed for a 3800. (231 C.I.) . Here the same supercharger is being used on a 300 cubic inch engine.




EDIT: mis-spoke about the working of a Roots-type blower.

Engine displacement is hardly the only considerationto to make. Volumetric efficiency is a qauntification of actual airflow for the geomtric displacement. Given reasonable AFRs and a normal BSFC, any given engine will pump as much air as the power it produces. a 3800NA vs a 4.9L, stock for stock, make relativily the same amount of power, reqiuring a similar amount of airflow. Seeing as these engines are from the same era of GM design, I doubt one is much more effiecient at burning fuel, so if they both produce 185-200hp in NA form, they should both reqiure a similar amount of air at the same AFRs.

[This message has been edited by FieroWannaBe (edited 10-30-2012).]

IP: Logged
mattwa
Member
Posts: 7106
From: Lorain, Ohio
Registered: Sep 2008


Feedback score:    (41)
Leave feedback





Total ratings: 88
Rate this member

Report this Post11-05-2012 12:18 AM Click Here to See the Profile for mattwaClick Here to Email mattwaSend a Private Message to mattwaEdit/Delete MessageReply w/QuoteDirect Link to This Post
Wow. I really would like to do this myself with my 4.9..I got a nice ported M90 with MPS and a N* TB sitting in my basement workbench. I would really like to mill out the intake and just bolt it there, but the damn distributor is in the way. Watching this closely.

[This message has been edited by mattwa (edited 11-05-2012).]

IP: Logged
Hudini
Member
Posts: 8152
From: Shanghai, China
Registered: Feb 2006


Feedback score: N/A
Leave feedback





Total ratings: 160
Rate this member

Report this Post11-05-2012 02:12 AM Click Here to See the Profile for HudiniClick Here to Email HudiniSend a Private Message to HudiniEdit/Delete MessageReply w/QuoteDirect Link to This Post
Did I miss something or is that Northstar tb in the mock up photos turned around backwards?
IP: Logged
81 4.9L X-11
Member
Posts: 129
From: S. FL, err now Philly !!
Registered: Sep 2006


Feedback score: N/A
Leave feedback

Rate this member

Report this Post12-01-2012 09:57 AM Click Here to See the Profile for 81 4.9L X-11Click Here to visit 81 4.9L X-11's HomePageClick Here to Email 81 4.9L X-11Send a Private Message to 81 4.9L X-11Edit/Delete MessageReply w/QuoteDirect Link to This Post
Any progress ??
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post12-01-2012 01:54 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
I'm putting up christmas lights this weekend. Nothing really that new on the car though.
IP: Logged
PFF
System Bot
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post12-01-2012 01:57 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post

arte444

1510 posts
Member since Sep 2002
 
quote
Originally posted by Hudini:

Did I miss something or is that Northstar tb in the mock up photos turned around backwards?


I believe I have it correct in the mock up. The side with all the carbon sludge build up should be towards the air filter.
IP: Logged
mattwa
Member
Posts: 7106
From: Lorain, Ohio
Registered: Sep 2008


Feedback score:    (41)
Leave feedback





Total ratings: 88
Rate this member

Report this Post12-01-2012 04:19 PM Click Here to See the Profile for mattwaClick Here to Email mattwaSend a Private Message to mattwaEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by arte444:


I believe I have it correct in the mock up. The side with all the carbon sludge build up should be towards the air filter.


The dirty/carbon side of a TB is toward the engine with the N*/4.9/3800 like this. You do in fact have it back-words and upside down. The IAC wouldn't function as it sits, because it's not against the engine. Plus I don't think it would seal either.
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post12-01-2012 09:39 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
Thank you. I will keep this in mind.
IP: Logged
RULOOKIN
Member
Posts: 1157
From: Mississauga, Ontario, Canada
Registered: Jan 2010


Feedback score:    (10)
Leave feedback

Rate this member

Report this Post12-02-2012 09:10 AM Click Here to See the Profile for RULOOKINClick Here to visit RULOOKIN's HomePageClick Here to Email RULOOKINSend a Private Message to RULOOKINEdit/Delete MessageReply w/QuoteDirect Link to This Post
You need a TB adapter plate to run a N* on a M90 Blower and in your pic the TB is up side down ! flip it so the rubber lines are at the bottom !
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post02-21-2013 12:27 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
Any progress Arte? .... My progress is at a snails pace also... slow but surely
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post02-21-2013 12:48 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Dennis LaGrua:


An M90 supercharger is only 90 cubic inches displacement and was designed for a 3800. (231 C.I.) . Here the same supercharger is being used on a 300 cubic inch engine.




Lets not forget that before the M90 came out on the series II 3800.... the 3.8 was boosted by the M62 supercharger
.... if you do the math The M90 is almost 50 percent bigger than the M62.... yet the 4.9 is less than 30 percent bigger than a 3.8


So if an M62 could boost a 3.8.... then an M90 will be just fine for a 4.9
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post02-21-2013 01:10 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post

MaxCubes

691 posts
Member since Aug 2004
 
quote
Originally posted by Dennis LaGrua:


The other item is the ECM. You would have to go into the program and move the main timing table to the right by a factor of two then split it into vacuum and boost sections, then come up with a two bar map scaling sequence. It can be done but its tricky.




Why not leave the ECM alone.... The stock ECM does a perfect job of running the engine when not boosted.

When you floor it.... thats when boost occurs and thats when you need extra fuel and less ignition advance....

Just use a rising rate fuel regulator. This will give the extra fuel needed proportional to boost ... as long as boost doesn't exceed 8 psi this works fine. a 6 to 1 ratio regulator is what you want... and make sure you have a fuel pump with a higher pressure capacity (like one for a 1997 vortec truck)

And an MSD 5462 box to control ignition timing proportional to boost


Thats all you need

Leave the ecm tuning stuff to the import nerds

[This message has been edited by MaxCubes (edited 02-21-2013).]

IP: Logged
mattwa
Member
Posts: 7106
From: Lorain, Ohio
Registered: Sep 2008


Feedback score:    (41)
Leave feedback





Total ratings: 88
Rate this member

Report this Post02-21-2013 01:37 AM Click Here to See the Profile for mattwaClick Here to Email mattwaSend a Private Message to mattwaEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by MaxCubes:


Lets not forget that before the M90 came out on the series II 3800.... the 3.8 was boosted by the M62 supercharger
.... if you do the math The M90 is almost 50 percent bigger than the M62.... yet the 4.9 is less than 30 percent bigger than a 3.8


So if an M62 could boost a 3.8.... then an M90 will be just fine for a 4.9


I agree, however that M62 was making alot of heat and had a pretty small pulley on it from the factory, at least compared to the M90's 3.8" pulley.
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post02-21-2013 01:53 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by mattwa:


I agree, however that M62 was making alot of heat and had a pretty small pulley on it from the factory, at least compared to the M90's 3.8" pulley.


That is true... But the M90 is a newer more efficient design (less heat)
.... And the Gen 5 M90 (found on 2004 and newer grand prix) is even more efficient (and that is what I am using on my build )
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post02-21-2013 09:10 AM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by MaxCubes:

Any progress Arte? .... My progress is at a snails pace also... slow but surely


Trying to find the time. No progress though =(
IP: Logged
PFF
System Bot
mattwa
Member
Posts: 7106
From: Lorain, Ohio
Registered: Sep 2008


Feedback score:    (41)
Leave feedback





Total ratings: 88
Rate this member

Report this Post02-21-2013 10:08 PM Click Here to See the Profile for mattwaClick Here to Email mattwaSend a Private Message to mattwaEdit/Delete MessageReply w/QuoteDirect Link to This Post
.

[This message has been edited by mattwa (edited 04-27-2013).]

IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-03-2013 10:00 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
Got the alternator wiring finished, coverted from the CD144 to CD130.

Final fit of the supercharger bracket is complete. Just needs full welds and some paint.

Next step is a to fabricate throttle body to supercharger adapter.

------------------
-Kyle
Email: kakagiraffe@gmail.com
1988 Notchback 4.9 V8, 5spd Isuzu, Spec Stage 4
True Dual Exhaust, Delta Cam (212,000 Miles)
1991 Honda Accord LX (230,000 Miles) 5spd

IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-06-2013 06:14 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
Bracket complete and painted hi temp black.



[This message has been edited by arte444 (edited 03-06-2013).]

IP: Logged
Raydar
Member
Posts: 38695
From: Carrollton GA. Out in the... country.
Registered: Oct 1999


Feedback score:    (12)
Leave feedback





Total ratings: 452
Rate this member

Report this Post03-06-2013 09:39 PM Click Here to See the Profile for RaydarClick Here to Email RaydarSend a Private Message to RaydarEdit/Delete MessageReply w/QuoteDirect Link to This Post
Nice fab work, but I don't think it'll be nearly strong enough unless you support it on the corners.
Just MHO....
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-06-2013 10:59 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
The snout has its own bracket as well =P
IP: Logged
jaredmurray88
Member
Posts: 1151
From: wellersburg pa
Registered: Mar 2011


Feedback score: (3)
Leave feedback

Rate this member

Report this Post03-06-2013 11:41 PM Click Here to See the Profile for jaredmurray88Click Here to Email jaredmurray88Send a Private Message to jaredmurray88Edit/Delete MessageReply w/QuoteDirect Link to This Post
Keep your head up my friend I have spent 8 years amassing the parts and such just to put in a 350 lol. Now that I'm going bald from all the stress and have basically all I need I'm sidetracked because now I have to build a garage in the spring to house all my crap and the driveway is too steep at my new place to do the swap!
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-15-2013 09:05 PM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
Looking good! .... glad to see progress

will it fit under the hood?
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-16-2013 12:07 AM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by MaxCubes:

Looking good! .... glad to see progress

will it fit under the hood?


Nope it doesnt fit =) the nose hits the decklid edge otherwise it would fit.
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-16-2013 12:21 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by arte444:




That is a clean cut... what was used to cut the shape?
....me.... I used a grinder
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-16-2013 09:34 AM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
Laser cutting machine
IP: Logged
PFF
System Bot
81 4.9L X-11
Member
Posts: 129
From: S. FL, err now Philly !!
Registered: Sep 2006


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-17-2013 12:32 PM Click Here to See the Profile for 81 4.9L X-11Click Here to visit 81 4.9L X-11's HomePageClick Here to Email 81 4.9L X-11Send a Private Message to 81 4.9L X-11Edit/Delete MessageReply w/QuoteDirect Link to This Post
Any chance you'll share a dwg file?

Looks good, keep up the work !!
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-17-2013 12:39 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 81 4.9L X-11:

Any chance you'll share a dwg file?

Looks good, keep up the work !!


Send me your email address and I'll send you a copy.
IP: Logged
81 4.9L X-11
Member
Posts: 129
From: S. FL, err now Philly !!
Registered: Sep 2006


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-17-2013 01:38 PM Click Here to See the Profile for 81 4.9L X-11Click Here to visit 81 4.9L X-11's HomePageClick Here to Email 81 4.9L X-11Send a Private Message to 81 4.9L X-11Edit/Delete MessageReply w/QuoteDirect Link to This Post
Cool, thanx!

Email sent to your gmail...

[This message has been edited by 81 4.9L X-11 (edited 03-17-2013).]

IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-30-2013 02:46 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
Update coming soon =) Vroom.
IP: Logged
Will
Member
Posts: 13591
From: Where you least expect me
Registered: Jun 2000


Feedback score: (1)
Leave feedback





Total ratings: 234
Rate this member

Report this Post03-30-2013 04:25 PM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by arte444:

I believe I have it correct in the mock up. The side with all the carbon sludge build up should be towards the air filter.


It is upside down and backwards. The flange with three screw holes secures the integrated MAF, which is upstream of the throttle.

You're also missing half of it.
There's another casting that bolts between what you have and the Cadillac manifold. That other part is necessary in order to seal the idle air passages.
IP: Logged
arte444
Member
Posts: 1510
From: Mankato, MN
Registered: Sep 2002


Feedback score: (2)
Leave feedback





Total ratings: 151
Rate this member

Report this Post03-30-2013 06:20 PM Click Here to See the Profile for arte444Click Here to Email arte444Send a Private Message to arte444Edit/Delete MessageReply w/QuoteDirect Link to This Post
I have video of it running but something is still goofed up so its pretty boring. It's stuck at 2500rpm with the throttle plate closed and running really rich.

I do not have the throttle body gasketed which is probably most of the issue, I am getting -20 vacuum at 2500rpm.

I'll see if I have time to fix and make a proper video tomorrow.
IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-31-2013 03:44 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
Awesome to here yours is running also! .... looking forward to seeing your video!


Running rich?.... make sure your map sensor is connected to vacuum.... preferably at the inlet side of the supercharger (more vacuum there and no boost )
.... a vacuum leak will also cause the map sensor to get a wrong reading and will cause the ecm to run rich.

... You want to connect all your vacuum operated stuff ( fuel regulator, brake booster, map sensor, etc) .... to the inlet side of the supercharger.)

The only items you would want to connect to the outlet side of the supercharger ( the lower manifold) would be the rising rate regulator, msd boost timing box, and/or boost guage.

IP: Logged
MaxCubes
Member
Posts: 691
From: El Paso, TX
Registered: Aug 2004


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-31-2013 04:01 AM Click Here to See the Profile for MaxCubesClick Here to Email MaxCubesSend a Private Message to MaxCubesEdit/Delete MessageReply w/QuoteDirect Link to This Post
If you plan on reprogramming the ecm ( and not use the msd and r.r.r. ) then you would want to use a 2 bar map sensor ( a map sensor that can read vacuum and boost )
.... in that case you would want to port it from the lower manifold.

.... Im not sure if the stock cadillac ecm can be programmed to read a 2 bar map sensor...

PBJ.... ( the guy that successfully turboed a 4.9) ... used a different ecm ... one from a GMC cyclone, if I remember correctly.
IP: Logged
Fierobsessed
Member
Posts: 4782
From: Las Vegas, NV
Registered: Dec 2001


Feedback score: N/A
Leave feedback





Total ratings: 147
Rate this member

Report this Post03-31-2013 08:31 AM Click Here to See the Profile for FierobsessedClick Here to Email FierobsessedSend a Private Message to FierobsessedEdit/Delete MessageReply w/QuoteDirect Link to This Post
I noticed that your belt tensioner is on the leading side of the blower. This should be avoided. The tensioner should always be placed "behind" all high load items (A/C compressor, Blower, Alternator) as it is meant to take up any slack on the back end. With the tensioner placed in front of the blower, any belt tension rise produced by the blower will compress the tensioner spring, causing the back end of the belt to loosen up and slip. Hope this makes sense.
IP: Logged
Previous Page | Next Page

This topic is 3 pages long:  1   2   3 
next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock