tbi - tpi fuel pump Question

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Jan 30, 2003 | 06:30 PM

vwdave

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From: miami, florida

tbi - tpi fuel pump Question

Swapping TBI to TPI. I have heard of putting another fuel pump inbetween the tank and the engine to get the pressure up. My question is...

Can the TBI pump keep up with the TPI pump?

Jan 31, 2003 | 02:09 PM

Damon

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From: Philly, PA

Yes. The TBI pump had good volume (assuming good operating condition) but is simply not designed to work at the high pressures a TPI pump is.

Jan 31, 2003 | 02:43 PM

Andy Fanshawe

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From: Derbyshire, United Kingdom

Car: 91 camaro rs

Engine: 350

Transmission: T5

So you're saying the TBI pump needs to run as well as the new inline TPI one? Surely the new one will pull through the old TBI one at rest? My mechanical pump pulls through the TBI one with no problem. Or am I wrong?

Andy.

Jan 31, 2003 | 03:10 PM

vwdave

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From: miami, florida

Ok, I'll drop the tank and change to a TPI pump.

Jan 31, 2003 | 06:39 PM

five7kid

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From: Littleton, CO USA

Car: 82 Berlinetta/57 Bel Air

Engine: L92/LQ4 (both w/4" stroke)

Transmission: 4L80E/4L80E

Axle/Gears: 12B-3.73/9"-3.89

Quote:

Originally posted by Andy Fanshawe
So you're saying the TBI pump needs to run as well as the new inline TPI one? Surely the new one will pull through the old TBI one at rest? My mechanical pump pulls through the TBI one with no problem. Or am I wrong?

Andy.

You may not be wrong, but that doesn't mean it's a good idea.