Verneuil

Does anyone know how to convert from a returnless FPR to a return style? I know ill need to install another Hard line to the tank for the FPR but idk how to hook up the FPR as a return style. Thanks

t_g_farrell

iTrader: (1)

You need an FPR thats a return FPR or you need a double connection on the
carb and use a restrictor in the return line so the carb sees pressure. You'll
have to put a guage at the carb to dial in the FPR versus the restrictor to get
the pressure right where you want it.

Verneuil

Hmm. A lill confused by this. So run Two lines off the return from the carb. Run a second restricter, And get another FP Dial and dial that in...

Verneuil

Like this

gsl-se addict

iTrader: (3)

This is for your GSL-SE pump setup, correct? Why not run a good return style regulator and be done with it? It has been done by quite a few others on here with success.

Without the return, your FPR may have a hard time dropping the pressure far enough and holding it steady.

PercentSevenC

Yeah, the right way to do it is to use a return-style FPR and block off the return line on the carb if it has one. I recommend the Mallory 4309 because it works, it's the right pressure range for most carb setups, and it's cheap.

trochoid

iTrader: (6)

Install another return line to the tank? Did you remove the stock one? You don't give the specs on what you're working with, please provide those. Carb/FI, pump size, engine, model year, etc.....

Ignore the diagram above, it's not a good way to do that.

jgrewe

iTrader: (1)

You can modify a cheap Holley regulator to be a return type. Here's is the best write up I've found on doing it. I did it to one and can hold pressure at 4.5psi for a Weber IDA with a EFI pump.
http://turbostude.com/ozmod.htm

Verneuil

I have some after market pump now like 3 psi. Im going with a Walboro 255 soon. 83, Stock ingine and stock nikki. Going Forced Induction soon. Already have a FPR its goot to something over 100 PSI. Its a Rising rate type.

PercentSevenC

Which FPR exactly do you have? If you're going turbo you absolutely need something like a Mallory 4309 or similar.