GM TBI has the regulator in the TBI.derf wrote:Might be worth giving it a go. Though if you have TBI, you'll want an additional pressure regulator. It comes out at 58 PSI which is way too much for a throttle body. Drop it down to ~20 to feed to a TBI system that will equalize at the pressure it wants. If you have multiport, the 58 PSI will be good.
Some TBI pressure regulators have a hard time dropping pressure that much, especially with a high flow pump.Blake wrote:GM TBI has the regulator in the TBI.derf wrote:Might be worth giving it a go. Though if you have TBI, you'll want an additional pressure regulator. It comes out at 58 PSI which is way too much for a throttle body. Drop it down to ~20 to feed to a TBI system that will equalize at the pressure it wants. If you have multiport, the 58 PSI will be good.
What can you tell me about your engine i.e. how big is the cam? Approx. how much horsepower? I'm sure we can help you out with a drop in unit that will serve you for many years to come. We just sent an in tank module to a customer with a mid 70's Cherokee converted to a Gen IV 5.3L/6L80E that had bad luck with a frame mounted pump. The extreme heat was causing it to vapor lock according to his mechanic. The drop in module solved all his problems.nightglide wrote:You're running msd atomic system?
My fitech also calls for a 3/8ths supply and 5/16ths return. I ran my return into my filler neck tho.
But it said it needs 3/8ths to supply fuel pump so it dosnt starve. If fuel pump is already in gas in isn't going to starve
Is this Eric from Novak? I have been emailing Eric.Novak Conversions wrote:What can you tell me about your engine i.e. how big is the cam? Approx. how much horsepower? I'm sure we can help you out with a drop in unit that will serve you for many years to come. We just sent an in tank module to a customer with a mid 70's Cherokee converted to a Gen IV 5.3L/6L80E that had bad luck with a frame mounted pump. The extreme heat was causing it to vapor lock according to his mechanic. The drop in module solved all his problems.nightglide wrote:You're running msd atomic system?
My fitech also calls for a 3/8ths supply and 5/16ths return. I ran my return into my filler neck tho.
But it said it needs 3/8ths to supply fuel pump so it dosnt starve. If fuel pump is already in gas in isn't going to starve
We're all part of this Jeeping community and love helping fellow Jeepers out!
Novak Conversions wrote:What can you tell me about your engine i.e. how big is the cam? Approx. how much horsepower? I'm sure we can help you out with a drop in unit that will serve you for many years to come. We just sent an in tank module to a customer with a mid 70's Cherokee converted to a Gen IV 5.3L/6L80E that had bad luck with a frame mounted pump. The extreme heat was causing it to vapor lock according to his mechanic. The drop in module solved all his problems.nightglide wrote:You're running msd atomic system?
My fitech also calls for a 3/8ths supply and 5/16ths return. I ran my return into my filler neck tho.
But it said it needs 3/8ths to supply fuel pump so it dosnt starve. If fuel pump is already in gas in isn't going to starve
We're all part of this Jeeping community and love helping fellow Jeepers out!
Yes, running MSD Atomic EFI. I'm really slow at all this (reading and reply to this too!) in between life (kids, work, etc.) but got the AtomicEFI in and it runs. Just controlling fuel at the moment, but will have it control timing after I get some more miles on it.nightglide wrote:You're running msd atomic system?
I was guessing the "required" 3/8 inch line was really about these FI systems being able to meet their advertised spec; i.e. someone calculated the fuel line size needed in order to provide a certain fuel rate to an engine that actually could produce the max horsepower they listed. I figured my AMC 360 wasn't anywhere near that so the 5/16" reduction wouldn't hurt it.nightglide wrote:My fitech also calls for a 3/8ths supply and 5/16ths return. I ran my return into my filler neck tho.
But it said it needs 3/8ths ...
LOL. yeah. But if gas gets low and the wag is leaning then the fuel might not make it to the pickup. I saw a post where Dr Marneaus showed his in-tank pump with the tray at the bottom. That's way better, but I didn't want to do the work to modify my stock tank.nightglide wrote:If fuel pump is already in gas in isn't going to starve