[Tigers] Carburetor input pressure

[Jay]

I do not know the specifics on the Tiger carb.  I do know from other car that when they say 2.5-3 psi for Webers, they really mean it.  Higher pressure doesn’t help with performance, and can only hurt.  But further, I understand the volume of flow is also equally critical in picking the right fuel pump.


On Apr 21, 2021, at 1:00 PM, Ron Fraser <rfraser at bluefrog.com> wrote:

Terry
	I believe the Autolite carb is looking for a max of 4.5 psi.
The original SU pump delivered about 2 psi.
You need to check the running fuel pressure to know if you will need a
regulator or a lower psi pump.

Ron Fraser 

-----Original Message-----
From: Tigers <tigers-bounces at autox.team.net <mailto:tigers-bounces at autox.team.net>> On Behalf Of Terry Lawell via
Tigers
Sent: Wednesday, April 21, 2021 3:06 PM
To: tigers at autox.team.net <mailto:tigers at autox.team.net>
Subject: [Tigers] Carburetor input pressure

I just put an Edelbrock electric fuel pump on my 66 MK1A with an original 2
barrel carb . The pump had a rating of 4-7psi. At idle it is reading 8.5psi.
I have not yet tested it under load. Is the 8.5psi too high for the float
control valve to operate properly and should i put a regulator on it? Any
input appreciated.

Terry
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