smoorenc Posted October 23, 2007 Share Posted October 23, 2007 I am using my original '76 280Z gas tank with larger AN fittings for my LS1 conversion. Sparks280ZT is selling a walboro 255 lph fuel pump and I tried searching, but maybe I used the wrong key words. Is there a specific pump to use or is this one from Matt good to use? Quote Link to comment Share on other sites More sharing options...
mark Posted October 23, 2007 Share Posted October 23, 2007 That one will work fine. You may find that you need a surge tank even with the baffeled 280 tank. It may starve for fuel below a quarter of a tank in a hard turn. Where in Charlotte are you? Quote Link to comment Share on other sites More sharing options...
smoorenc Posted October 23, 2007 Author Share Posted October 23, 2007 I actually live in Lincolnton. My car is up near Welcome/Midway off of 52 at Mark and Roddy's garage. Where does a surge tank go? Is it better to get a different tank then use the stock one? Mine would have to be boiled, cleaned and tapped with a large fitting, so I have nothing against a better way to do it. We talked about fabrication for a fuel cell, but that wasn't really in the budget. Quote Link to comment Share on other sites More sharing options...
Savage42 Posted October 23, 2007 Share Posted October 23, 2007 I got the one with the JCI kit and use the C5 Corvette filter/pressure regulator. My car is still in the assembly phase, but is a proven setup. Quote Link to comment Share on other sites More sharing options...
smoorenc Posted October 23, 2007 Author Share Posted October 23, 2007 Thanks Gary I'll look into that. I tried to go to your website, but the grey on grey was just to hard one my old eyes.. LOL Quote Link to comment Share on other sites More sharing options...
mark Posted October 24, 2007 Share Posted October 24, 2007 I actually live in Lincolnton. My car is up near Welcome/Midway off of 52 at Mark and Roddy's garage. Where does a surge tank go? Is it better to get a different tank then use the stock one?Mine would have to be boiled, cleaned and tapped with a large fitting, so I have nothing against a better way to do it. We talked about fabrication for a fuel cell, but that wasn't really in the budget. Mark and Roddy will do it right. If your car sees any track use, I'll bet you will need a surge tank. It goes anywhere between the gas tank and engine. It will be fed by a low pressure pump and the high pressure pump goes between the surge tank and the engine. Roddy will know. Quote Link to comment Share on other sites More sharing options...
qwik240z Posted October 24, 2007 Share Posted October 24, 2007 I am using my original '76 280Z gas tank with larger AN fittings for my LS1 conversion. Sparks280ZT is selling a walboro 255 lph fuel pump and I tried searching, but maybe I used the wrong key words. Is there a specific pump to use or is this one from Matt good to use? Scott, My car runs a Walbro 255 and it works fine. I am using an Aeroquip FPR. I have the 75-76 gas tank in my car and I do find when I get down to less then 1/4 tank, it will suck air in a hard corner. Not a big problem unless you will see alot of autocross or track time. A surge tank is a small, additional tank that feeds from your tank and keeps a full supply of fuel at all times. Do a search for Surge tanks. There is plenty of info here on them. Quote Link to comment Share on other sites More sharing options...
mark Posted October 24, 2007 Share Posted October 24, 2007 David, I noticed you don't have a vacume line to your regulator. I'm about to finally get my ls1 project moving and I was wondering about the vacume port on that regulator. I have the same regulator. Any thoughts? Quote Link to comment Share on other sites More sharing options...
1 tuff z Posted October 24, 2007 Share Posted October 24, 2007 i'm running the same setup [pump, regulator] as quick240z except i do have the vacuum line plumbed from the regulator to the vacuum port at the rear of the intake manifold. if i remember correctly it helps the regulator to more accurately do it's job [i know, that doesn't sound technical but it's as good as i can do...]. Quote Link to comment Share on other sites More sharing options...
mark Posted October 24, 2007 Share Posted October 24, 2007 Thanks for the response. I'll plumb in a vacume line. Quote Link to comment Share on other sites More sharing options...
Dudeboy Posted October 25, 2007 Share Posted October 25, 2007 smoorenc, I do not want to hijack your thread, but your question brought about another issue Mark and 1tuffz pointed out. I have a 77 Z, JCI/Walbro Pump (I need to check my fuel pressure regulator for a vacuum port) and it looks just like qwik240z set-up. What fuel pressure regulator ? and/or is a vaccum line needed? Quote Link to comment Share on other sites More sharing options...
qwik240z Posted October 25, 2007 Share Posted October 25, 2007 i'm running the same setup [pump, regulator] as quick240z except i do have the vacuum line plumbed from the regulator to the vacuum port at the rear of the intake manifold. if i remember correctly it helps the regulator to more accurately do it's job [i know, that doesn't sound technical but it's as good as i can do...]. The shop that installed my fuel system explained it to me like this. The vacuum port (if used) would get hooked up to the intake plenum. When there is a rise in vacuum in the intake the FPR will reduce the fuel pressure. They said that the LS1 wants to see constant fuel pressure and it is not needed. I really don't understand this stuff too well but why would you want to drop the fuel pressure? My car seems to run fine without it hooked up. Quote Link to comment Share on other sites More sharing options...
Savage42 Posted October 25, 2007 Share Posted October 25, 2007 I have the C5 Vette filter that has a built in regulator. The LS1 is setup for constant pressure and does not require a vacuum line plumbed to it to reduce pressure, like that of an OEM Datsun regulator on a 280Z and many other vehicles. I also like the C5 F/R setup, as I can mount the pump in the rear with this setup and only run 1 line up to the motor. I like clean and "less stuff". Quote Link to comment Share on other sites More sharing options...
Savage42 Posted October 25, 2007 Share Posted October 25, 2007 Thanks Gary I'll look into that. I tried to go to your website, but the grey on grey was just to hard one my old eyes.. LOL Yep, the 510 site that host my pics has been down for a week, so it should be up to normal very soon. It's always something! ;^) Quote Link to comment Share on other sites More sharing options...
VinhZXT Posted October 25, 2007 Share Posted October 25, 2007 I am using stock 280ZXT fuel pump on both of my Ls1 swaps without any problem. I am using the C5 fuel filter/regulator just like Savage. Don't need to spend extra money for the adjustable regulator. Talking about clean and less stuffs have you think about flipping the fuel rail so that you can run the fuel feed line to the rail from the passenger side? I am going to try to do this on my Ls1 swap Z this weekend. Will let you know if I run into any problem. Quote Link to comment Share on other sites More sharing options...
VinhZXT Posted October 28, 2007 Share Posted October 28, 2007 Ok I did it. Here are a couple of pictures. The only thing I didn't hook up was the vacuum line from the air duct to the FPR. I don't think it hurts anything without this line hook up. Quote Link to comment Share on other sites More sharing options...
smoorenc Posted October 28, 2007 Author Share Posted October 28, 2007 Thanks for the info and pics Vinh and Gary. I will go the combo route of changing the fuel lines over to the passanger side AND using the C5 regulator. Matt Sparks is meeting up with me later in the week with his fuel pump. Scott Quote Link to comment Share on other sites More sharing options...
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