Z_Dust Posted February 28, 2003 Share Posted February 28, 2003 I have an after market fuel rail for my 77z and I am ready to install. My question is. Can I use the stock FPR or should I use an after market FPR. I noticed the OEM FPR has two "fuel-in" lines. Do I use those two or just use one and cap the other. Any installation tips such as FPR mounting and brackets will be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted February 28, 2003 Share Posted February 28, 2003 Every aftermarket fuel rail I have seen for the L28E requires an aftermarket adj. FPR. EBay seems to have a bunch always for a good price. Yasin Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted February 28, 2003 Share Posted February 28, 2003 You can use the stock FPR if you want, but not many do. You must have an older FPR, the stock one on my turbo fuel rail had only one inlet. It's easier to get an aftermarket one and mount it to the right inner fender with the supplied mounting brackets. Otherwise you have to fabricate one. Quote Link to comment Share on other sites More sharing options...
Z_Dust Posted March 1, 2003 Author Share Posted March 1, 2003 so where can I buy a FPR from. I looked at Summit but they have quite a few and I'm not exactly sure which one to get. Ebay has even more to chose from. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted March 1, 2003 Share Posted March 1, 2003 You can buy one from Summit. First you need to know what your requirements are. You need to know how you are going to plumb it, so you can make sure it has the right fittings. You need to know what fuel pressure you will be using to make sure it can be adjusted to the setting you need. It should also be matched to the pump for flow rating at your fuel pressure. Personally I could only find one FPR that met all of my requirements. I ended up buying an AEM universal FPR (25-302), because I could adjust the fuel pressure between 20 and 80 psi (I needed to use it at 20 psi until I make my MAF mods - bigger injectors and Z31 ECU don't get along). I also needed it to regulate pressure for any given pump. I am using a Bosch pump right now, a small one, but I may upgrade to 2 pumps in parallel. It also had hardware available to plumb it into hose barbs (with a little work) because I am still using stock fuel lines. So anyway, if you are just running stock fuel pressure and stock injectors, just get a FPR that fits, and adjust it to 37psi. Quote Link to comment Share on other sites More sharing options...
J Taylor Posted March 1, 2003 Share Posted March 1, 2003 You can use the stock regulator if you want. Just cap off one of the inlets....worked fine for me. You may be able to get a newer model regulator that only has one inlet to make things look cleaner. JT Quote Link to comment Share on other sites More sharing options...
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