Stock FPR Problems: Who else...

[Max777]

Originally Posted by jgrewe

Take the top off of one of your stock FPR's and put an adjustable top that is made for a Honda on it. B&M makes them, they are about $50 from Summit racing.

i would like more detail on this? How is a Honda adaptor going to fit? Have you tried this yourself? I'm currently reading on zilvia about a DSM FPR adaptor that will fit nissan regulators, but nothing about the RX-7...

[stylEmon]

Thanks Dave, it's shitty that this pump has been acting up since day one.. I should've taken care of it long ago. I hate having to redo stuff that I've already done!

[jgrewe]

Originally Posted by Max777

i would like more detail on this? How is a Honda adaptor going to fit? Have you tried this yourself? I'm currently reading on zilvia about a DSM FPR adaptor that will fit nissan regulators, but nothing about the RX-7...

The part number for the B&M part is #46057. It fits the '88-'00 Civic and '90-'00 Integra and NSX.

I have two race cars running these. You just grind the largest diameter rim of metal off to remove the non-adjustable cap. The metal is pretty thin but its good to keep it cool by dunking it in some water as you go, there is a rubber diaphragm that is inside that holds the fuel in. Just gently spin the FPR as you grind and peel the top off when you can. You will see when you get through the first layer of metal. The B&M top just clamps on the now "headless" stock unit with 4 allen screws and a C type lower piece.

Turn the top screw to set your pressure and then lock it down with the locking nut.

[TehMonkay]

Or you could tap the stock rail for 3/8" npt and get a barb fitting adapter and go to an aeromotive pretty cheap.

[Max777]

Well, if I have fuel issues, I think I will get the B&M unit. Thanks for the info, this was an informative thread, and hopefully someone will search it in the future.

[Whizbang]

when i got my one turbo running for the first time i had bad fuel pressure issues. Turned out the fuel pressure reg. was stuck.

[stylEmon]

thanks for the testimony. I thought that was the problem. There was actually visible gas leakage coming from my stock fpr... So I replaced it with another stock unit, same problem... that's when I finally 'admitted' that I got a faulty fuel pump.

[classicauto]

FWIW, the nippon denso pump is more money - but IMHO far better the the 255.

I'm running the rx7.com version, which is just the denso pump with some parts to help the install in an FC, but its a great pump FWIW.

I had a fuel pressure reg leak externally on me before and I never found out from where.. got another one from Alex and it was fine.. this was when I did my T2 swap

yeah I sell the denso pump, more money but I agree much better.

[stylEmon]

what is better about it?

I know the longevity of the pump is better (plus here we give denso pumps a 1 year warranty from time of purchase)

I have heard they they continue a consistant flow better then the walbro pump

[classicauto]

Originally Posted by stylEmon

what is better about it?

I had two walbro's die on me in less mileage then I've put on this denso pump.

I've never personally flow tested them or anything like that - I've just had bad luck with walbro's dieing. Doesn't seem to be the case with everyone though, ltos of people have luck with them. J-Rat just made 550+whp on his old single walbro.......so hey

Just throwing my 2cents out there

I have seen a walbro next to a denso on a flow tester and the walbro after abotu 20 minutes was getting inconsitant numbers.. now these were both new units however I am with Classic.. it has never happened to me personally just stuff I have seen/heard

I have a walbro on my car with under 800 miles and I am going to swap it out before next year.

[Whizbang]

does anyone have the stats on a viper pump