Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 01:07 AM Share Posted 21/05/13 01:07 AM Hey guys.First I wanna thank the guys that helped me out with my E85 questions.Im making 411rwkw on 20psi running dedicated e85 through 2000cc injectors(they're too big, I'm working on going to 1000s).But I seem to be popping the welds on my surge tank. This is the third time its happened. The tank has been made by Dr Bolt here in Adelaide, and I'm confident in his workmanship. Im lead to believe that it happens only when I fill my main tank to the brim.I have 2x 044s feeding the fuel rail, a 265L/h feeding the surge tank and brand new 3/8 lines the whole way through the car. I can guarantee there is no restriction in the fuel system anywhere.Ive been told that falcons will only support round surge tanks, but I think that's a load of crap...Any ideas, suggestions or thoughts? Link to comment Share on other sites More sharing options...
freeze_dk I am dissatisfied with my current employment situation Donating Members 8,610 Member For: 18y 4m 4d Gender: Male Posted 21/05/13 01:13 AM Share Posted 21/05/13 01:13 AM I've heard this happen to a car 4 times, it was either the inlet or outlets were too small and built to much pressure inside the surge Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 8m 1d Gender: Male Location: Adelaide Posted 21/05/13 01:13 AM Share Posted 21/05/13 01:13 AM Whatttttt Use Dr Plazmaman Cheers Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 9d Gender: Male Location: Perth Posted 21/05/13 01:19 AM Share Posted 21/05/13 01:19 AM if you're popping tanks you either have A: Poor workmanship in either designing or fabricating the tankB: Pressure build up in the tankhow big is the largest flat panel in the tank? 200mm x 150mm? @ 58psi in the tank you could be seeing around 2600lb's of force on panel (sizes are pie in the sky estimate to illustrate my point)If you have a look at any of the off the shelf "square" tanks they are all machined from hefty billets of ally not fabbed from flat plate, there's a reason for this and also a reason why pressure vessels are roundIs your rail return plumbed into the surge or the main tank? Link to comment Share on other sites More sharing options...
Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 01:24 AM Author Share Posted 21/05/13 01:24 AM Rail returns to the surge tank.Dr bolt makes plenty of surge tanks, fuel tanks, drop tanks etc. He is no stranger to the game.I dont have the money to be buying another surge tank, and I need mine back before Friday.He has the tank at the moment repairing it, again. So I can't measure it.The last time I got it back I did a pressure test and it was at 28psi at the return hose on the sender unit. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 8m 5d Gender: Male Location: @ my laptop Posted 21/05/13 01:28 AM Share Posted 21/05/13 01:28 AM how thin is the aluminium? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 9d Gender: Male Location: Perth Posted 21/05/13 01:28 AM Share Posted 21/05/13 01:28 AM At 20psi boost your tank will be seeing 48+psi if your seeing 28 @ idle. Plumb the return line straight into the main tank and try again Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 8m 1d Gender: Male Location: Adelaide Posted 21/05/13 01:32 AM Share Posted 21/05/13 01:32 AM Post up a pik of the tank Link to comment Share on other sites More sharing options...
Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 01:33 AM Author Share Posted 21/05/13 01:33 AM The 044s have a check valve on them, there shouldn't be any difference from the pressure reg? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 9d Gender: Male Location: Perth Posted 21/05/13 01:38 AM Share Posted 21/05/13 01:38 AM not sure what you mean there mate, the check valves are designed to stop pressure bleeding down from the pumps when they are shut off.The fuel pressure reg is boost reference @ a 1 to 1 ratio, base fuel pressure is 58psi so every psi of boost you add pressure in the rail increases be the same amout. This increases the load on the 044's and the intank feeding them, which will drive pressure in the surge tank up. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now