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Twin turbo l67 by 1fstg5
Started on: 05-30-2014 12:13 AM
Replies: 13 (982 views)
Last post by: nocuttt on 06-02-2014 11:39 AM
1fstg5
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Report this Post05-30-2014 12:13 AM Click Here to See the Profile for 1fstg5Click Here to Email 1fstg5Send a Private Message to 1fstg5Edit/Delete MessageReply w/QuoteDirect Link to This Post
Ok so I would like to introduce myself I'm kyle I want to build a twin turbo fiero on an l67 engine. I wrote a real long and interesting post and some how got deleted so I'm just going to start with pics this time and add as we go.

88 notch with 5 speed getreg
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Interior before
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Interior after

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We are going for a red and black interior all work done myself and my wife the map pocket will match the lower parts of the door, I just purchased one piece red and black racing seats. I am also in the process of building a custom center console with a ten inch sub where the glove box use to be.

We want to shoot for a mid 600whp twin 16g turbos with supporting mods on an l67. I want the v8 Archie widebody kit and a 10 1/2 rear tire. Everything will be upgraded around it to do it right this is the beginning stay tuned for the progress. I'm shooting for this to be done by the end of this year early next year. But you know how it goes sometimes you start and can't stop. I figured this out with my 600whp Pontiac g5 and many other projects I have built. First fiero I've done but I love these cars.
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hercimer01
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Report this Post05-30-2014 03:14 PM Click Here to See the Profile for hercimer01Send a Private Message to hercimer01Edit/Delete MessageReply w/QuoteDirect Link to This Post
Welcome to the forum.
Have fun with your build, we'll be watching and here if you need anything.

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Project Genisis Lo Budget 3800SC swap
12.840@104.8 MPH Intense-Racing 1.9 rockers, 3" exhaust, 3.4 pulley, ZZP tune and 18 year old tires.

88 Coupe under construction

88 formula 3.4L 4t60 swap SOLD

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Dennis LaGrua
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Report this Post05-30-2014 05:48 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
Guys on this forum have run 10 second 1/4 mile times with a single properly sized turbo. I doubt if twin turbo's will buy you much unless you are going for the worlds record. As V8 Archie would say "How fast do you want to go?"

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" 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 "

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Justinbart
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Report this Post05-30-2014 09:55 PM Click Here to See the Profile for JustinbartSend a Private Message to JustinbartEdit/Delete MessageReply w/QuoteDirect Link to This Post
Single turbo will do everything you want and more. I see that this car is more than just a 600hp racer so the "show" aspect of twin turbo will be fine but not needed.

16g's come in huge variety. What one do you plan to go with? You will really be pushing them to make 600 on the 3800.

Keep in mind Lag is almost non-existent with a torquey 3800. Try out the PTE 6466 turbo. (Still dreaming of this turbo. I really want to see it pushed on a 3800)

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Turbo 3800 E85 F23 5spd spec5
10.91@133.1

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1fstg5
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Report this Post05-30-2014 10:46 PM Click Here to See the Profile for 1fstg5Click Here to Email 1fstg5Send a Private Message to 1fstg5Edit/Delete MessageReply w/QuoteDirect Link to This Post
I want to do twins because I want to have better corner response but till have high horsepower I have a four cylinder that does 11.3 at 138mph trap speed fwd is a bish. On a gt3076r I'm now upgrading to a presicion 6152. I'm going for roadcoarse more then drag but still want 600 or more and I know a super charger want do that. Thanks for the warm welcomes I'm excited
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Dennis LaGrua
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Report this Post05-30-2014 11:28 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 1fstg5:

I want to do twins because I want to have better corner response but till have high horsepower I have a four cylinder that does 11.3 at 138mph trap speed fwd is a bish. On a gt3076r I'm now upgrading to a presicion 6152. I'm going for roadcoarse more then drag but still want 600 or more and I know a super charger want do that. Thanks for the warm welcomes I'm excited


I guess if you want all your power down low twin turbos might be better but with todays precision ball bearing turbos, those things spool up super quick. Twin turbos in the confines of the small engine compartment might present a very challenging exhaust plumbing job. I guess it can be done by an expert exhaust shop. AFAIK the Eaton Supercharger even a modified engine with the Gen V design and an intercooler maxes out around 400 HP.

------------------
" 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 "

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1fstg5
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Report this Post05-30-2014 11:40 PM Click Here to See the Profile for 1fstg5Click Here to Email 1fstg5Send a Private Message to 1fstg5Edit/Delete MessageReply w/QuoteDirect Link to This Post
Yea supercharges are fun but even whipple chargers, and other after market super chargers on v8s have a hard time doing 600whp. I think a turbo at the crossover and a turbo where the truck is wont be to bad. You should see some of the twin turbo set ups we have installed on v8s like terminator motors in mustangs they are tight.
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nocuttt
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Report this Post05-31-2014 01:00 AM Click Here to See the Profile for nocutttSend a Private Message to nocutttEdit/Delete MessageReply w/QuoteDirect Link to This Post
Twin turbos in reality are meant for production cars...don't waste your time, effort and monies...instead listen to what others are saying here, mostly what you have on the other car will not translate properly here...

BTW I will offer another option, its called pulse turbocharging, build your setup around twin-entry housing and size the turbocharger around this principle. If you are a "corner carver"...then you want a flatter torque curve, i get it...twins can work, with the technological advantage today...it is simply to say you "have twin turbos"...this is all an opinion though...do you :P
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Custom2M4
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Report this Post05-31-2014 11:10 AM Click Here to See the Profile for Custom2M4Click Here to Email Custom2M4Send a Private Message to Custom2M4Edit/Delete MessageReply w/QuoteDirect Link to This Post
If your really destined to do a twin turbo setup, you could look at how I routed mine both under the upper trunk. I have a thread in the construction zone, not updated but the plumbing pictures are there.

Cheers.

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1fstg5
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Report this Post05-31-2014 03:10 PM Click Here to See the Profile for 1fstg5Click Here to Email 1fstg5Send a Private Message to 1fstg5Edit/Delete MessageReply w/QuoteDirect Link to This Post
I'm open to all feed back and opinions just because I build race cars doesn't mean I can't learn and do something better this is why I joined this forum all you guys are great. I'll investigate more about what people are saying.
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nocuttt
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Report this Post06-01-2014 01:39 AM Click Here to See the Profile for nocutttSend a Private Message to nocutttEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 1fstg5:

I'm open to all feed back and opinions just because I build race cars doesn't mean I can't learn and do something better this is why I joined this forum all you guys are great. I'll investigate more about what people are saying.


One turbo...two wastegates (if u must)...but twin scrolls is what you should look into also

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Inferno
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Report this Post06-01-2014 09:31 PM Click Here to See the Profile for InfernoClick Here to Email InfernoSend a Private Message to InfernoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hey man, if you want to go twin Turbo then do it. I myself want to twin supercharge a 3.4DOHC, why? Why hell not? I got all the parts already.

So do what you want to do.

Look forward to seeing your engine build.

Cheers
BULL
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darkhorizon
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Report this Post06-02-2014 08:47 AM Click Here to See the Profile for darkhorizonSend a Private Message to darkhorizonEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 1fstg5:

I want to do twins because I want to have better corner response but till have high horsepower I have a four cylinder that does 11.3 at 138mph trap speed fwd is a bish. On a gt3076r I'm now upgrading to a presicion 6152. I'm going for roadcoarse more then drag but still want 600 or more and I know a super charger want do that. Thanks for the warm welcomes I'm excited


If you plan on doing a road course fiero the horsepower end is not a factor... its much easier to bolt a mostly stock sc3800 into a fiero and well overpower a fiero's: suspension tires brakes aero cooling etc....

Do a few roadcourse days and youll see that the preception of a good car to use out there is much different from reality when you see a 220hp ss2000 riding your bumper for 2 miles in a 600whp race prepped shelby cobra gt500
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nocuttt
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Report this Post06-02-2014 11:39 AM Click Here to See the Profile for nocutttSend a Private Message to nocutttEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by darkhorizon:


If you plan on doing a road course fiero the horsepower end is not a factor... its much easier to bolt a mostly stock sc3800 into a fiero and well overpower a fiero's: suspension tires brakes aero cooling etc....

Do a few roadcourse days and youll see that the preception of a good car to use out there is much different from reality when you see a 220hp ss2000 riding your bumper for 2 miles in a 600whp race prepped shelby cobra gt500


^^^
perhaps the OP may not be talking a formal roadcourse...but I think many underestimate even 300 whp will do in these cars around a bend....
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