Can I Hook Up My FPR Like This?

[SpdElemts]

Hey guys i was wondering if i could set up my fuel pressure reg. like this. Please let me know if this is possible.

Thanks, Jeff

[r34 gtr]

from the looks of it, no.

[slownslurious]

any reason not to do it the traditional way? that way looks kind of sketchy.. it would probably work though, just possibly not as well as having the reg. on the rail.

[r34 gtr]

first off, the stock regulator is still there. itll probably leak everywhere. second, how the hell is the fuel coming back from the rail? i only see one line. third, that regulator doesnt even look like it would be in a position to work. it goes: feed to rail, return to regulator, then from regulator back to tank.

[SpdElemts]

Well the way i looked at it was that the fuel pump will fill up the rail and the fuel lines between the rail and FPR and then build up pressure. The excess pressure will be bleeded off by the FPR and then sent back to the Tank. To me it is the same concept as having it at the end of the fuel rail. Also the stock fpr does not leak i already tested it with it not hooked up does not leak. I just wanted any opinions if this was a good idea or not. I am sure its functional, but maybe theres something im not seeing.

Thanks

[c-rad]

This thread makes me want to put cigarettes out on my eyeballs.

[r34 gtr]

just do it the right way! itll use less hose!

[good morning]

I see fuel pressure problems in your future.

[The_Chosen_One]

I'd like to see this setup work, give it a try and report back to us.

[float_6969]

Stop it guys. You're gonna make me delete all of your posts and put of flowers and there is nothing I hate worse than you fools making me do my job. SO QUIT IT!!!

OP: In answer to your question, no, that won't work. If you want to use an aftermarket FPR instead of the NISMO unit you'll need to get the NISMO adapter that bolts onto the fuel rail in place of the stock FPR and allows you to use a remote FPR like you are trying to do.

Do it right the first time or you'll do it right later on down the road...

[r34 gtr]

come on, at least i tried to help! you know you love me too much to delete my posts anyway.

[float_6969]

You know I love you Tim!

Chris, I love you too, but be nice to the newbs. You weren't born knowing everything and IIRC, you just recently mistook a loose power steering tensioner bolt for rod knock, so ease up....

[SpdElemts]

alright guys ill just go ahead and pick up an adapter. Only reason i asked is that i wont have the adapter in time for a track day coming up so i wanted to see if this would work for now. Thanks for your help.

[float_6969]

No problem! Glad we could help.

[r34 gtr]

cant you just bypass the stock fpr, but leave it there? its job is to not let fuel pressure get below a certain point (36psi), but it doesnt really regulate it above that right? couldnt you just run it w/o a vacuum line and hook up an aftermarket job after it set to a higher base pressure (say, 40psi)? then in theory the fuel pressure would be at whatever you set it at with the external job. im not sure how it would work, but it might get you by until you get that adapter in. anyone want to tell me i'm an idiot?

[ca18datsun510]

regulator is a restriction, it keeps pressure.

[float_6969]

It depends on the regulator you're using. Some require that you leave the stock FPR on there, but those are usually the ones you see with cheap turbo kits.

I would be concerned about flow reduction running through 2 regulators...