SLE-883
Member
- Joined
- Jun 29, 2009
- Messages
- 178
- Reaction score
- 20
- Points
- 18
- Location
- Sydney
- Members Ride
- 1981 VH Commodore SL/E
I have just installed a carby convereted 304 engine in my SLE.
It has an Edelbrock AirGap manifold, Pacemaker headers and 650 DP. As part of the set up I've installed a Cater fuel pump. It's the 4600 model which is rated at 8-9psi.
I had installed the pump originally too high compared to the tank and was getting a 2psi reading in the engine bay. I've now relocated the pump on the rail near the back door and although when I first start the car I am seeing a 6-7psi reading, after driving the car I pop the bonnet and the guage is reading 3-4psi. I don't have a regulator to achieve this.
This seems low however the car it running fine and the fuel bowls are filling up. I went on the highway to see how it went at speed and at 100km/h didn't notice any pinging.
From your experience is 3-4psi ok? Should I upgrade the pump to the Carter 4601model which is rated to 15psi and the use a regulator?
Thanks in advace for your help
It has an Edelbrock AirGap manifold, Pacemaker headers and 650 DP. As part of the set up I've installed a Cater fuel pump. It's the 4600 model which is rated at 8-9psi.
I had installed the pump originally too high compared to the tank and was getting a 2psi reading in the engine bay. I've now relocated the pump on the rail near the back door and although when I first start the car I am seeing a 6-7psi reading, after driving the car I pop the bonnet and the guage is reading 3-4psi. I don't have a regulator to achieve this.
This seems low however the car it running fine and the fuel bowls are filling up. I went on the highway to see how it went at speed and at 100km/h didn't notice any pinging.
From your experience is 3-4psi ok? Should I upgrade the pump to the Carter 4601model which is rated to 15psi and the use a regulator?
Thanks in advace for your help