bumble zee Posted May 28, 2003 Share Posted May 28, 2003 blew out my second fuel pump tonight.. im done with stock pumps. i just ordered a 70gph 100+psi pump. i think that will supply 18# of boost Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted May 28, 2003 Share Posted May 28, 2003 That's a big one. Which one did you get? I'm having good success with my OEM pump for a CIS Porsche 911... Quote Link to comment Share on other sites More sharing options...
bumble zee Posted May 28, 2003 Author Share Posted May 28, 2003 http://www.cbperformance.com/catalog.asp?ProductID=1246 Quote Link to comment Share on other sites More sharing options...
Mike kZ Posted May 28, 2003 Share Posted May 28, 2003 Make sure you have a high flow filter before the pump! Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted May 28, 2003 Share Posted May 28, 2003 [url']www.cbperformance.com/catalog.asp?ProductID=311[/url] That specification is a bit shy on data. To say a pump will supply 450hp is misleading if they don't state what fuel pressure it flows 70 gal/hr. A lot of manufacturers, like Walbro, will state flow at a low pressure like 40psi. Actual flow at a useable pressure for an EFI turbo may be considerably less - they state it will operate at 100 psi, but I'd bet that's the shutoff pressure, where flow goes to zero. I don't know what pump that is, but I think it may be a Walbro GL392 -- it is probably adequate and the flow characteristics are well documented on the internet. Quote Link to comment Share on other sites More sharing options...
bumble zee Posted May 29, 2003 Author Share Posted May 29, 2003 i have a old aftermarket fuel pump that has a prefilter, it is for carbs, but if i take that pre filter off, do you think it will work.. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted May 29, 2003 Share Posted May 29, 2003 i have a old aftermarket fuel pump that has a prefilter, it is for carbs, but if i take that pre filter off, do you think it will work.. Not a chance. Carbs do not need pressure (well, more than 10 psi). That thing would shut down completely by 20 psi. Get a Bosch CIS pump off any number of junkyard vehicles - it is vitually guaranteed to outflow the stock ZXT by 50% at 50 psi +. As a matter of fact, I've got a couple with the right fittings that have been tested and will bolt into the stock location. $30 + shipping and it's yours. Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted May 29, 2003 Share Posted May 29, 2003 I run the Peirburg from Cartech and it is a 200 LPH pump and it doesn't mind higer pressures. I have just swapped over to a 4 bar map and am having no problems. It was 20o bucks when I bought it. Walbro pumps tend to lose the ability to flow higher psi over time. I have never had one that lasted for a long time at high pressures. Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted May 29, 2003 Share Posted May 29, 2003 I need one of those fart alarms they sell. Quote Link to comment Share on other sites More sharing options...
jeffp Posted June 10, 2003 Share Posted June 10, 2003 You are running the same setup that I am on my car. This pump you are talking about, what kind of flow rates will it do @ 4 bar with 25-30 psi of boost? I am really surprised it worked for you. I had a terrible time getting a pump in my car that would do the 4 bar setup and run 20psi plus of boost. I ended up going with a twin turbo in tank pump and that has worked for me, but what a nightmare getting that pump in my tank and working right, and still having an accurate fuel gauge assembly. I had to build a seperate box for the pump inlet, and run the return back into that box. The tank had the stock baffle, but the pump was having a problem with running dry. anyway, I might be interested in that pump you have in the future. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.