LQ9 rail mounted fuel regulator enough?
02-28-2010, 11:26 PM
#1
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LQ9 rail mounted fuel regulator enough? Hi all,
I'm installing an 2003 stock LQ9 into a 1972 Blazer.
I'm using an in-line MSD2225 fuel pump. I have a high pressure filter as well.
The question is: Is the rail mounted fuel regulator going to handle the 100psi from the pump or do I NEED an additional in-line regulator?
Thank you
I'm installing an 2003 stock LQ9 into a 1972 Blazer.
I'm using an in-line MSD2225 fuel pump. I have a high pressure filter as well. The question is: Is the rail mounted fuel regulator going to handle the 100psi from the pump or do I NEED an additional in-line regulator?
Thank you
03-01-2010, 11:26 AM
#2
Nice looking project, clean '72 Blazers are hard to come by these days. As for your question, I wouldn't put 100psi to the stock regulator if it were mine. Are you using that pump because it's something you already have? I would use a more suitable pump rather than add another regulator to it if you are going to leave it stock, or close to it.
03-01-2010, 05:41 PM
#3
That pump is not rated at any specific psi. The pump is rated by flow at specific volts, psi, and fuel specific gravity.
The system pressure is controlled by a regulator..In this case, you could add an adjustable reg after the rails, and use a return line.
Or, you could use a Vette filter/reg, and mount it at the tank, w/ a short return line, and do away w/ modding the rails, or running a return all the way from the engine.
The system pressure is controlled by a regulator..In this case, you could add an adjustable reg after the rails, and use a return line.
Or, you could use a Vette filter/reg, and mount it at the tank, w/ a short return line, and do away w/ modding the rails, or running a return all the way from the engine.
03-02-2010, 09:00 AM
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Thanks guys.
I was thinking that since the pump ( which I ordered ) was flow rated (as Geez described ) I would be fine with the rail mounted reg.
The concern comes when I'm at wide open throttle. Will that put the pressure too high for the rail reg. ?
I installed new hard fuel lines ( so I already have the return plumbed )and before I have the flex line made I wanted to ask around.
I suppose it wouldn't hurt to add a regulator but I really want to avoid adding more items to the eng compartment as I have more to add already like HID lighting control boxes, dual batteries etc.
My last project went well and was my daily driver for 4 years! ( sold it )
1966 Impala 1996 LT1 4L60E
THis was a fast a fast car and the whole family enjoyed it.
So roomy and smooth riding. Not like my kidney killer teeth knasher Blaze!
Stay tuned.
Marty
I was thinking that since the pump ( which I ordered ) was flow rated (as Geez described ) I would be fine with the rail mounted reg.
The concern comes when I'm at wide open throttle. Will that put the pressure too high for the rail reg. ?
I installed new hard fuel lines ( so I already have the return plumbed )and before I have the flex line made I wanted to ask around.
I suppose it wouldn't hurt to add a regulator but I really want to avoid adding more items to the eng compartment as I have more to add already like HID lighting control boxes, dual batteries etc.
My last project went well and was my daily driver for 4 years! ( sold it )
1966 Impala 1996 LT1 4L60E
THis was a fast a fast car and the whole family enjoyed it.
So roomy and smooth riding. Not like my kidney killer teeth knasher Blaze!
Stay tuned.
Marty
