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300zx injectors Work or no?
Posted 18 December 2004 - 05:11 PM
Posted 18 December 2004 - 05:16 PM
if they fit, you should be able to tune it in... i still havent heard about a rising rate fuel pressure regulator being thoroughly tested. with the stock injectors.
Posted 18 December 2004 - 05:17 PM
Posted 18 December 2004 - 05:17 PM
Posted 18 December 2004 - 05:18 PM
Posted 18 December 2004 - 05:19 PM
It isn't a bad Idea for me tho. It's got some miles tends to make some ugly sounds, People think I have a bunch of yaks under my car when I start is up
the stock pump will make well in access of 45 PSI. we have a race car that runs something like 50 PSI at idle, and more on boost. that is with the stock pump
Posted 18 December 2004 - 05:20 PM
Lucky I'm an enterprising individual
btw. that is with a Rising Rate FPR...no problems. aside from the fact that a good Rising Rate is grossly expensive
Posted 18 December 2004 - 05:27 PM
Posted 18 December 2004 - 05:36 PM
y 50 psi at idle?
Posted 18 December 2004 - 09:38 PM
So, would someone please tell me how they are different from an EA82T's pressure regulator, or why they are needed.
Posted 18 December 2004 - 09:51 PM
When you pressurize the intake track, you need to increase the fuel pressure so you have the same "pressure differential" between the fuel line side and the intake track.
The stock fuel pressure regulator increases fuel pressure 1 PSI for every 1PSI of boost, so it's a 1:1 RRFPR (rising rate fuel pressure regulator)
Rising rates are available, and most times adjustable for different ratios. Usually like 5:1, 7:1, 9:1, and 12:1 is probably as high as you'll find.
With the stock fuel pressure regulator at 10 PSI of boost you will have stock pressure + 10 PSI
With a RRFPR even with a 5:1 ration, at 10 PSI you'll have stock pressure + 50 PSI. So close to 100 PSI of fuel.
RRFPR's are a crude, and cheap way to add more fuel. They are cheap compared to electronics, but don't have anywhere close to the tunability. They are somewhat of a Bandaid fix. On our race car, the RRFPR will be coming out in favor or fancy electronics. it's just what we had available at the time.
I really wouldn't screw with a RRFPR...your gonna end up spending something like 100-200 bucks on one, which is half way to decent piggyback comptuers.
not to mention...some of those fuel lines under the car which are getting close to 20 years old aren't going to like the 100 PSI.
And 50 PSI at idle. we needed to raise the baseline pressure to keep the motors rich and cool enough, so we don't end up with melted/broken pistons
Posted 18 December 2004 - 09:59 PM
Posted 22 December 2004 - 09:53 AM
when peepl buy a turbo kit for a honda, it comes with a check ball for their map sensor, and a rrfpr. works very well, not a bandaid.
Posted 22 December 2004 - 11:06 AM
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