big enough injectors for gt35r?
#1
big enough injectors for gt35r?
I have a walbro fuel pump, an aem fpr with stock sized fuel lines. 850cc primary and 1600 2ndary. Is that enough to support a gt35r boosting around 12psi? I am not sure on a/r I will choose yet.
The only reason I am asking is because BNR is taking their sweet time and my buddy has an extra turbo he said he is willing to give me, I need to buy the exhaust housing and do the manifold and plumbing. It's just a thought that crossed my mind, so I was curious in case I tell Bryan that I decided to change my mind. Origionally I didn't want that big of a turbo, but I am really considering it now.
I only want around 300whp, but now I am thinking the gt35r would probably give me a better spool and powerband over a bnr stage 3.
So now I am looking at 8-900 for a bnr that bolts up , or spending 1600-2000 and tons of time to do a full on single turbo upgrade
The only reason I am asking is because BNR is taking their sweet time and my buddy has an extra turbo he said he is willing to give me, I need to buy the exhaust housing and do the manifold and plumbing. It's just a thought that crossed my mind, so I was curious in case I tell Bryan that I decided to change my mind. Origionally I didn't want that big of a turbo, but I am really considering it now.
I only want around 300whp, but now I am thinking the gt35r would probably give me a better spool and powerband over a bnr stage 3.
So now I am looking at 8-900 for a bnr that bolts up , or spending 1600-2000 and tons of time to do a full on single turbo upgrade
#7
Senior Member
Straight to the battery is pretty scary terminology.
But what he is talking about is you need to be sure your fuel pump circuit is capable of handling the increased current of a bigger fuel pump.
If you try to use your stock wiring with a bigger pump the increased current demand will create a voltage drop that will reduce the performance of the pump. If you look you should be able to find a chart online for most pumps that show their flow capability at certain pressures and voltages. Typically we would look at the supply at a nominal voltage such as 13V. And the pump can deliver "enough fuel".
BUT, if you have a 3V drop on the pump circuit you can see on the chart that the fuel supply is less than adequate. Next thing you know you've roasted an engine, all because the wiring to the fuel pump is inadequate. The way to avoid this is to run a sufficiently sized wire from the battery (fused of course) to the back of the car where you wire up a relay that is triggered by the old fuel pump wire and then supply the fuel pump from that relay.
There are of course variations to this, but the basic idea is to insure that the circuit can deliver all the power the pump needs.
But what he is talking about is you need to be sure your fuel pump circuit is capable of handling the increased current of a bigger fuel pump.
If you try to use your stock wiring with a bigger pump the increased current demand will create a voltage drop that will reduce the performance of the pump. If you look you should be able to find a chart online for most pumps that show their flow capability at certain pressures and voltages. Typically we would look at the supply at a nominal voltage such as 13V. And the pump can deliver "enough fuel".
BUT, if you have a 3V drop on the pump circuit you can see on the chart that the fuel supply is less than adequate. Next thing you know you've roasted an engine, all because the wiring to the fuel pump is inadequate. The way to avoid this is to run a sufficiently sized wire from the battery (fused of course) to the back of the car where you wire up a relay that is triggered by the old fuel pump wire and then supply the fuel pump from that relay.
There are of course variations to this, but the basic idea is to insure that the circuit can deliver all the power the pump needs.
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