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Henn
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Location:
Rosanna, Melb
Registered:
June 2002
Re: Surge tank. What low pressure pump to use? Sat, 22 January 2005 00:18 Go to previous messageGo to previous message
Feed out of the bottom of the tank sounds strange. I'd think any condensation in the tank would be pumped straight to the engine first.

Anyway, don't use a holley lift pump, total overkill (unless you're aiming for 300+rwkw) and it will deafen you. I have one and wish I didn't.

In the diagrams above remember to put an EFI filter bfore the engine.

The options I recommend are either modify your tank with baffles so you can run an in tank EFI pump (maybe AE82 as suggested above, but there are plenty of options) or run a surge tank with the return from the rail refilling the surge tank. Then you can use almost a smaller lift pump, but it is a hassle to fit all that hardware under the car.

On that note, its a hassle but well worth taking the time to fit it under the car, not in the cabin. It means you avoid the petrol smells and any dramas in the long run.

And the function of each part:
- One line out of tank to lift pump which pumps into surge tank
- A line out of the surge tank to your high pressure pump which feeds the fuel rail through a filter (and passes through the fuel pressure regulator)
- You need a return line from the fuel rail back to the surge tank (at idle you use very little fuel and your high pressure pump doesn't like pumping at high pressure but such low flow rates, so it just pumps it around and back into the surge tank. Also it helps it your fuel cool and makes fuel pressure regulation easier I think)
- And another return line from the surge tank to the main tank, for similar reasons to above

Anyway, good luck
Hen

PS, sorry about the length



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SubjectPosterDate
Read Message   Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 03:08
Read Message   Re: Surge tank. What low pressure pump to use? TurboRA28Fri, 21 January 2005 03:10
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 03:23
Read Message   Re: Surge tank. What low pressure pump to use? crametFri, 21 January 2005 03:29
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 03:31
Read Message   Re: Surge tank. What low pressure pump to use? crametFri, 21 January 2005 03:34
Read Message   Re: Surge tank. What low pressure pump to use? stylerFri, 21 January 2005 03:16
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 03:41
Read Message   Re: Surge tank. What low pressure pump to use? crametFri, 21 January 2005 03:57
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 04:27
Read Message   Re: Surge tank. What low pressure pump to use? rob_RA40Fri, 21 January 2005 04:38
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 04:52
Read Message   Re: Surge tank. What low pressure pump to use? rob_RA40Fri, 21 January 2005 05:13
Read Message   Re: Surge tank. What low pressure pump to use? TurboRA28Fri, 21 January 2005 05:31
Read Message   Re: Surge tank. What low pressure pump to use? rob_RA40Sat, 22 January 2005 01:04
Read Message   Re: Surge tank. What low pressure pump to use? NickZSat, 22 January 2005 01:45
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 05:43
Read Message   Re: Surge tank. What low pressure pump to use? crametFri, 21 January 2005 06:14
Read Message   Re: Surge tank. What low pressure pump to use? Steve-AE86Sun, 23 January 2005 11:08
Read Message   Re: Surge tank. What low pressure pump to use? sillySat, 29 January 2005 07:02
Read Message   Re: Surge tank. What low pressure pump to use? TE72_TurboFri, 21 January 2005 06:26
Read Message   Re: Surge tank. What low pressure pump to use? SkipFri, 21 January 2005 06:52
Read Message   Re: Surge tank. What low pressure pump to use? ae86slaverFri, 21 January 2005 10:06
Read Message   Re: Surge tank. What low pressure pump to use? TurboRA28Fri, 21 January 2005 21:58
Read Message   Re: Surge tank. What low pressure pump to use?  HennSat, 22 January 2005 00:18
Read Message   Re: Surge tank. What low pressure pump to use? TE72_TurboSat, 22 January 2005 01:31
Read Message   Re: Surge tank. What low pressure pump to use? sillySun, 23 January 2005 06:28
Read Message   Re: Surge tank. What low pressure pump to use? takaiSun, 23 January 2005 12:01
Read Message   Re: Surge tank. What low pressure pump to use? chrisellisSun, 23 January 2005 12:15
Read Message   Re: Surge tank. What low pressure pump to use? stylerSun, 23 January 2005 14:06
Read Message   Re: Surge tank. What low pressure pump to use? TurboRA28Sun, 23 January 2005 22:40
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