 Fuel Pump specs for 46 ida weber 2.5litre and larger race engines.? |
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| jmz |
 Jul 1 2021, 11:14 AM
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#1
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Member  Group: Members Posts: 165 Joined: 11-April 16 From: Lone Star State Member No.: 19,886 Region Association: None  |
I'm having a fuel pressure issue after being on track for a few laps. It seems like the float bowls are being sucked dry....
Current pump is a Carter I believe the model to be 4060. This shows to be a 50 GPH pump. The car has 46 IDA webers is 2.5 litre high compression. ...also have a 2.8 that I run sometimes. I would think 50gph would be enough so maybe something else is going on? Anyone have any thoughts? |
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| Justinp71 |
Jul 13 2021, 05:22 PM
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#2
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Senior Member Group: Members Posts: 1,583 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None 
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What about fuel sloshing in the tank? Maybe add baffles or foam to the tank? Is there an old fuel return line in use, maybe that needs to be turned down or off. I know I have one in use from the factory injection system.
Also if your fuel pump is only 3.5 psi and mounted at the tank, it would be better to get a higher pressure like 4-6 psi and regulate it down at the carbs. There is pressure loss as the fuel flows. |
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Posts in this topic
jmz Fuel Pump specs for 46 ida weber 2.5litre and larger race engines.? Jul 1 2021, 11:14 AM
brant it sure seems like that pump should be more than a... Jul 1 2021, 11:25 AM
jmz [quote name='brant' date='Jul 1 2021, ... Jul 1 2021, 01:18 PM brant I know the Holley's are rebuildable.
I rebuilt... Jul 1 2021, 02:20 PM brant also check your pickup inside of the cell for a pi... Jul 1 2021, 02:22 PM wndsrfr
also check your pickup inside of the cell for a p... Jul 2 2021, 07:01 AM ThePaintedMan Brant would know far better than I would. But firs... Jul 2 2021, 07:00 AM jmz Thanks all. I'm going to put some effort in l... Jul 2 2021, 03:51 PM stownsen914 I was having a similar issue on my vintage 911 rac... Jul 2 2021, 08:33 PM jmz
I was having a similar issue on my vintage 911 ra... Jul 14 2021, 05:22 AM stownsen914 Do some research on the fuel mats. I considered us... Jul 14 2021, 06:20 AM jmz
What about fuel sloshing in the tank? Maybe add b... Jul 14 2021, 05:19 AM campbellcj FWIW the most recent of several fueling issues I... Jul 14 2021, 07:45 PM |
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