According to that thread, stock fuel pressure is basically 30psi or so.
BPW at zero percent is 134.
So If I'm understanding everything right, the FJ10485 / TJ32 for the 366 is about 65 lb per hr at 30 psi.
According to that thread, stock fuel pressure is basically 30psi or so.
BPW at zero percent is 134.
So If I'm understanding everything right, the FJ10485 / TJ32 for the 366 is about 65 lb per hr at 30 psi.
No need to re-invent the wheel. But we can make it better
The thread I shared is from nearly 9 years ago. I'm unable to find the information from the 1993 C6000 tune.Originally Posted by ralmo94
Possibly this thread is further research for a single TBi injector 4-cylinder swap?
Along those lines . . . . Holley 552-43 Injector: https://www.holley.com/products/fuel...e/parts/522-43 Fuel Injector 60 PPH@12 PSI ~ 85 PPH@21 PSI
Yes it is. I was concerned with having too much injector for a 91 cubic inch engine. The TBi I have is from a 1990 cavalier 2.2 and uses that small style injector. I was thinking I could possibly get one of those injectors and run at lower pressure. Everything I found for j car is that they use the standard 13psi. Is there a j car i4 bin? Maybe all this isn't needed and the injector in my TBi is fine? like
No need to re-invent the wheel. But we can make it better
My experience with 4-cylinder TBI computers is mostly with the 2.5-liter Fiero, with definition $1C using ECM 1226864. The 4-cyliner Fiero TBI system is a simple TBI system with adequate junk yard / aftermarket support. The $89 definition using ECM 1227727, like the 1990 Lumina 4-cylinder TBI system, has less junk yard / aftermarket support than $1C.
$1C throttle body pictured below:
84 - 86 Fiero Throttle Body.JPG
I wonder at what point the injector is too big for idle and has minimum pluse?
I don't really have any experience in that area yet.
I know 2bbl goes sync and async for better idle.
I know I have read about cranking fuel pressure pressure on trucks and needing vacuum referenced regulator so the effective injector size is still small enough at idle.
So I guess the question is what is the minimum pulse width of TBi injectors?
No need to re-invent the wheel. But we can make it better
any tbi injector will work up to 50psi. I have personally gone as high as 32 psi. if you are overfueling at idle then goto a vacuum referenced FPR. this will run a lower pressure @ idle
Do you have any idea how much would be too much for a 1.5 liter engine to idle?
I'm planning a swap and have a TBi from a 2.2 rated at 13 psi.
If 13psi is too much for idle, it doesn't really give me anywhere to go with a vacuum referenced regulator.
No need to re-invent the wheel. But we can make it better
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