![]() |
Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
![]() |
#7 |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
|
Re: inline fuel pump ???'s
TBI Fuel Pump
Stock TBI system runs 12 to 15 PSI. You also will need to install return line from TBI injector body back to the gas tank which will require a triple outlet sending unit or alterations with gas tank itself. Be very careful working on gas tanks!! First outlet is used to draw gas from gas tank, second outlet is used for charcoal canister evaporation control and third outlet used for fuel return. You should not use a dual outlet sending unit since charcoal canister evaporation control line has a built in restriction. Furthermore, for TBI system to be happy a fuel tank must be equipped with baffles to keep fuel pick-up submerged at all times. Otherwise, TBI would run out of fuel during hard cornering, acceleration or braking. One way to get around un-baffled tanks is to use a small surge fuel tank (about 1/3 Gallon) inline with main gas feed line along with a secondary low pressure pump. See diagram below for details. I am actually working on this type of conversion for my ‘75 except that I have dual tanks to deal with!!! TBI (HP Pump) can be found at AZ or ?? Master E8153 or higher performance Carter P5001 (www.summitracing.com) both have similar supply pressure rating 12-20 psi and can supply up to 50GPH. //RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|