TBI to Carb Question
Thread Starter
Registered User
Joined: Jan 2004
Posts: 69
TBI to Carb Question
I'm swapping from TBI to carb in an 88 Camaro. Can I use a dead-head regulator or do I have to use a bypass style. I know the article on thirdgen.org says to use a bypass style regulator, but I assumed that was for the high pressure TPI system. Thoughts?
Last edited by usa1racing; Jun 30, 2005 at 12:13 PM.
Registered User
Joined: Jul 2002
Posts: 3,768
From: Friendswood, TX, USA
Re: TBI to Carb Question
Your carb can not take more then about 6 to 7psi of fuel pressure. Any more than this and the floates will not be able to cut off the fuel flow into the carb.
Get a fuel pressure gage and check it.
Get a fuel pressure gage and check it.
Registered User
Joined: Jul 2002
Posts: 3,768
From: Friendswood, TX, USA
Re: TBI to Carb Question
A bypass regulator is always a good idea when using a high volume/pressure pump. If you dead head this pump you will probably burn up the pump, blow a fuel line, or blow the regualtor.
Registered User
Joined: Sep 1999
Posts: 2,342
From: MI
Re: TBI to Carb Question
Buy this guys Mallory 4309 regulator or get a new one. Aeromotive makes a Universal Bypass style regulator also. I've used the Mallory with great success.
Your TBI needs to be regulated DOWN to 5-7psi. I believe it's 10 or 14PSI stock and that will definately make the carb spit fuel everywhere/in and out of the engine.
Goodluck!
Your TBI needs to be regulated DOWN to 5-7psi. I believe it's 10 or 14PSI stock and that will definately make the carb spit fuel everywhere/in and out of the engine.
Goodluck!
Thread
Thread Starter
Forum
Replies
Last Post