Anybody used a Professional Products 10653 Powerflow Fuel Pressure Regulator 3 Port Clear on a TBI to Carb swap ?



http://www.streetsideauto.com/p/prof...buretor-10653/

 

Not I, but it looks like a nice one. If you end up getting that one you could give it a thumbs up or down. Welcome to the forum.

 

We used this on my brothers 82Z http://www.summitracing.com/parts/MAA-4309/ Works like it says.

 

Well I just found a Mallory 4309 for 84.99 with the 15% discount at advance auto.com so I guess I'll go with the tried and true for that price.

 

Good deal ,at the time i don't believe my brother paid 100$ at summit, i think it was more around 80$ at the time or some sort of summer deal they had going on.

 

Changing from TBI to Carb should I use egr intake or non egr ? Ive already got a non egr would that be acceptable ? Thanks.

 

Emission + ECM Carb = EGR

No Emission testing = No EGR

 

Thank You bestracing

 

So, the 4309, properly connected & adjusted on our cars, should be able to have 5-7 lbs at the carb with existing factory 5/16" return line.

Would it be accurate to say, everybody here with a TBI to carb/4309 swap does not have any issues with excessive carb-side fuel pressure, unless there is a restricted return downstream of the regulator?
Thanks

 

Yes I would agree that if you are getting excessive fuel pressure to the carb then you are restricted down stream. More than likely the short section of rubber hose near the tank is either swollen inwards or kinked. If it has never been replaced you should just replace it due to age anyway. It's a cheap and easy fix.

On rare occasion the regulator could have a pressure creep problem.

 

So, the factory 5/16" return line is always sized adequately for use with a TBI fuel pump & 4309 reg then, right?

 

It should be because there are higher flowing factory systems using the same size return line without problems.