Pennock's Fiero Forum
  Technical Discussion & Questions - Archive
  How many LPH is probably required to run a L67 3800 supercharged motor.

T H I S   I S   A N   A R C H I V E D   T O P I C
  

Email This Page to Someone! | Printable Version


How many LPH is probably required to run a L67 3800 supercharged motor. by m0sh_man
Started on: 01-04-2008 11:55 PM
Replies: 15
Last post by: megafreakindeth on 01-06-2008 10:20 AM
m0sh_man
Member
Posts: 8428
From: south charleston WV 25309
Registered: Feb 2002


Feedback score:    (23)
Leave feedback





Total ratings: 162
Rate this member

Report this Post01-04-2008 11:55 PM Click Here to See the Profile for m0sh_manClick Here to Email m0sh_manSend a Private Message to m0sh_manDirect Link to This Post
im looking up ratings for the L67, alot of people recommended the EP376 fuel pump to run the motor, on one website it rates it at 160LPH (liters per hour)

well i found another a/c delco pump that puts out 180LPH which would be alittle more of an improvement, and it also puts out more pressure.

im wondering if you guys know how many LPH the stock 3800 supercharged fuel pump put out, or if someone has a part number for it.

matthew
IP: Logged
PFF
System Bot
Billybo455
Member
Posts: 529
From: FL
Registered: Dec 2006


Feedback score: N/A
Leave feedback





Total ratings: 85
Rate this member

Report this Post01-05-2008 12:19 AM Click Here to See the Profile for Billybo455Click Here to Email Billybo455Send a Private Message to Billybo455Direct Link to This Post
if you got the time and money i recommend the bosche 044 pump. you have to modify stuff to make it fit though. but it's hard to beat the walbro 255. for like 130 shipped from racetronix i got mine and a hot wire kit.
IP: Logged
RideZiLightning
Member
Posts: 1540
From: Tacoma, WA
Registered: Jul 2006


Feedback score: N/A
Leave feedback





Total ratings: 153
Rate this member

Report this Post01-05-2008 01:10 AM Click Here to See the Profile for RideZiLightningSend a Private Message to RideZiLightningDirect Link to This Post
treperformance.com

$70, all the fuel you'll ever need
IP: Logged
goatnipples2002
Member
Posts: 2055
From: Bellevue,Ne.
Registered: Jul 2005


Feedback score: (1)
Leave feedback





Total ratings: 112
Rate this member

Report this Post01-05-2008 05:16 AM Click Here to See the Profile for goatnipples2002Click Here to visit goatnipples2002's HomePageClick Here to Email goatnipples2002Send a Private Message to goatnipples2002Direct Link to This Post
E3270 the Sy/Ty pump is a good pump.
IP: Logged
m0sh_man
Member
Posts: 8428
From: south charleston WV 25309
Registered: Feb 2002


Feedback score:    (23)
Leave feedback





Total ratings: 162
Rate this member

Report this Post01-05-2008 10:21 AM Click Here to See the Profile for m0sh_manClick Here to Email m0sh_manSend a Private Message to m0sh_manDirect Link to This Post
i think i might take my chances with the pump from www.treperformance.com looks like its a good pump with a 1 year warranty, normally id use the pump from the donor car, but this motor didnt come with anything extra from the donor car.

for $80 shipped and the ability to run higher horsepower it looks good, +'s for all of you

matthew
IP: Logged
RideZiLightning
Member
Posts: 1540
From: Tacoma, WA
Registered: Jul 2006


Feedback score: N/A
Leave feedback





Total ratings: 153
Rate this member

Report this Post01-05-2008 10:40 AM Click Here to See the Profile for RideZiLightningSend a Private Message to RideZiLightningDirect Link to This Post
I have used several of those pumps

They are very quiet and my first one I used, is still working in the Talon after 4 years
IP: Logged
ryan.hess
Member
Posts: 20784
From: Orlando, FL
Registered: Dec 2002


Feedback score: (1)
Leave feedback





Total ratings: 319
Rate this member

Report this Post01-05-2008 12:26 PM Click Here to See the Profile for ryan.hessClick Here to Email ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
With a BSFC of 0.5, a 240hp engine will require 120lbs of gasoline per hour. ~6lbs per gallon = 20 gallons per hour.

20 gallons per hour = 77 liters per hour

Or in other words, a 160lph pump will support 480hp, a 255lph pump will support 800hp.

This assumes the rated flow @ the rated pressure, and no return. You'll be fine with a pump of >100lph @ 65+ psi. Just putting some math up so you don't "think you need a 255 minimum"

[This message has been edited by ryan.hess (edited 01-05-2008).]

IP: Logged
Billybo455
Member
Posts: 529
From: FL
Registered: Dec 2006


Feedback score: N/A
Leave feedback





Total ratings: 85
Rate this member

Report this Post01-05-2008 12:57 PM Click Here to See the Profile for Billybo455Click Here to Email Billybo455Send a Private Message to Billybo455Direct Link to This Post
math and real world are different things also. f/i requires mroe fuel to make the same power as n/a because of lower afr. you also can't run as high a duty cycle on injectors on f/i either. based on your 800 hp for a 255 explain to me why i ran out of pump at only 475 whp?
IP: Logged
ryan.hess
Member
Posts: 20784
From: Orlando, FL
Registered: Dec 2002


Feedback score: (1)
Leave feedback





Total ratings: 319
Rate this member

Report this Post01-05-2008 01:36 PM Click Here to See the Profile for ryan.hessClick Here to Email ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
 
quote
Originally posted by Billybo455:

math and real world are different things also. f/i requires mroe fuel to make the same power as n/a because of lower afr. you also can't run as high a duty cycle on injectors on f/i either. based on your 800 hp for a 255 explain to me why i ran out of pump at only 475 whp?


couple reasons..... different BSFC and possibly line restrictions. I think turbo/super BSFC can get up to about 0.65

Using that number I get 600 crank HP max
IP: Logged
thismanyfieros
Member
Posts: 3468
From: Red Deer, alberta,canada
Registered: Dec 2002


Feedback score:    (15)
Leave feedback





Total ratings: 120
Rate this member

Report this Post01-05-2008 01:41 PM Click Here to See the Profile for thismanyfierosClick Here to Email thismanyfierosSend a Private Message to thismanyfierosDirect Link to This Post
if i am correct my swap uses the stock gtp pump that came with my motor...no problems...just if i want to go up in mods i might hafta swap it out for more flow....something to keep in mind when you do yours...my logical thinking was if i want more power i am just gonna have another swap done in another car....lol....welcome to the addiction...ps it only took me 2 months to crave more power...sad...tim
IP: Logged
m0sh_man
Member
Posts: 8428
From: south charleston WV 25309
Registered: Feb 2002


Feedback score:    (23)
Leave feedback





Total ratings: 162
Rate this member

Report this Post01-05-2008 02:30 PM Click Here to See the Profile for m0sh_manClick Here to Email m0sh_manSend a Private Message to m0sh_manDirect Link to This Post
 
quote
Originally posted by goatnipples2002:

E3270 the Sy/Ty pump is a good pump.



thats the same pump that cross references with the n/a 3800's im pretty sure it wont run the supercharged 3800's i could be wrong considering those vehicles you listed are turbocharged and Fuel injected, but im not going to take my chances.

i found the EP376 for the 94-96 LT1 v8's for as low as $37.95 + shipping, however im not sure if i trust the brand thats being sold on ebay (unknown brand)

matthew

[This message has been edited by m0sh_man (edited 01-05-2008).]

IP: Logged
PFF
System Bot
MstangsBware
Member
Posts: 11509
From: TEXAS
Registered: Mar 2002


Feedback score:    (108)
Leave feedback





Total ratings: 459
Rate this member

Report this Post01-05-2008 07:28 PM Click Here to See the Profile for MstangsBwareClick Here to Email MstangsBwareSend a Private Message to MstangsBwareDirect Link to This Post
The EP376 will get the job done for the 3800SC. I have ran this pump for over 2 years now on my modded 3800SC with no problems. I run 42# injecters with a 2.8 pulley and have never ran into a lean condition. Whatever pump you are going to use, dont go cheap on it, get AC Delco, Walbro, ect--avoid the knockoffs.
IP: Logged
FIEROFLYER
Member
Posts: 3971
From:
Registered: Oct 2002


Feedback score:    (13)
Leave feedback





Total ratings: 178
Rate this member

Report this Post01-05-2008 08:20 PM Click Here to See the Profile for FIEROFLYERSend a Private Message to FIEROFLYERDirect Link to This Post
I have a friend with a 97 Regal GS that has the 3800SC in it from the factory and when his fuel pump crapped out last year he was told it was the same pump for the 3800SC as the 3800N/A in the Regal, I was suprised that the car always ran fine and never lean so unless the Regals in 97 had special pumps for both the 3800 SC and the 3800 N/A engines the N/A pump must be ok.
Personally I always use either a stock 3800SC fuel pump or the walbro 255 one for cars where mods are in the plans. Dan
IP: Logged
darkhorizon
Member
Posts: 12227
From: Flint Michigan
Registered: Jan 2006


Feedback score: (1)
Leave feedback





Total ratings: 450
Rate this member

Report this Post01-06-2008 12:13 AM Click Here to See the Profile for darkhorizonSend a Private Message to darkhorizonDirect Link to This Post
while a n/a pump looks like a SC pump, it does not have the same part number.

My friend literally makes these at delphi, and there is a specific pump they put on the supercharged versions.

[This message has been edited by darkhorizon (edited 01-06-2008).]

IP: Logged
black88fiero
Member
Posts: 402
From: Brunswick, Ohio
Registered: Jul 2006


Feedback score: (1)
Leave feedback

Rate this member

Report this Post01-06-2008 01:02 AM Click Here to See the Profile for black88fieroClick Here to Email black88fieroSend a Private Message to black88fieroDirect Link to This Post
ya they do look the same but the s/c will flow 25-30 lph more but a stock 3800 n/a pump will support 350 hp

------------------
Parts for your FWD GM 97-07
Morad Parts Company
Moradpartscompany

IP: Logged
megafreakindeth
Member
Posts: 553
From:
Registered: Aug 2006


Feedback score: (2)
Leave feedback

Rate this member

Report this Post01-06-2008 10:20 AM Click Here to See the Profile for megafreakindethSend a Private Message to megafreakindethDirect Link to This Post
dont worry about sizing the pump to your motor, all the exess gas will just go down back into the tank. its not like putting injectors on that are too large. thats why everyone just slaps the same 255lph pump on their cars, the price difference between that and the 190lph ones one is about 10-20 dollars.
IP: Logged



All times are ET (US)

T H I S   I S   A N   A R C H I V E D   T O P I C
  

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