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Contour Enthusiasts Group Archives Forums Modifications Forced Induction ANyone running nitrous with a 3l?

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Re: ANyone running nitrous with a 3l? #788585 11/05/03 01:55 PM
Joined: Aug 2003 Posts: 2,097 CO S stilov OP Hard-core CEG\'er
OP stilov Hard-core CEG\'er S Joined: Aug 2003 Posts: 2,097 CO	Well I actually did read the FAQ on injector stuff, and it had said it would run a little lean on 19lb injectrs at high rpm...I would probably go 24 anyway, but with nitrous...would higher be appropriate and how big of shot can the 3l block take? I really not willing to find out Thanks for the info guys. 98 E0 SVT with some stuff

Re: ANyone running nitrous with a 3l? #788586 11/05/03 07:00 PM
Joined: Oct 2000 Posts: 6,760 On the short bus R RTStabler51_dup1 Hard-core CEG'er
RTStabler51_dup1 Hard-core CEG'er R Joined: Oct 2000 Posts: 6,760 On the short bus	rule of thumb is that you can run 50% of the factory rated hp. With 3L I don't think we can really say we know yet. With Tom running 300+FWHP, I would say, with a stock bottom end and 11.2C/R 75hp would be safe. Dual stage, possibly up to 100 (50+50). *Ryan* Trollin!

Re: ANyone running nitrous with a 3l? #788587 11/05/03 08:15 PM
Joined: Sep 2000 Posts: 9,602 KC, MO D DemonSVT_dup1 Hard-core CEG'er
DemonSVT_dup1 Hard-core CEG'er D Joined: Sep 2000 Posts: 9,602 KC, MO	Originally posted by SVT_AJ: stock SVT injectors and fuel pump are suposed to handle 330hp n/a and 300hp forced induction. 19lb injectors with an FPR or FMU (that would be return style) can "technically" see that much power at the crank. However the fuel system pressure would be out the door and injector spray pattern so several degraded that random lean spots would be prevalent every where in the power curve. This is a very stupid way to try and regulate fuel. 19lb injectors in a returnless system can handle about 225-240 FWHP. Though with a bad tendency to lean out in the upper rpm levels. A safe number for both systems is ~225-230FWHP. Making power above that level would really require running a larger injector to keep the duty cycle within sane levels and the injector spray pattern and longevity good. Now the fuel pumps are reversed. The stock return style can support about 240-250FWHP while a stock returnless can support almost 300FWHP. However the returnless is hampered by a terrible lower pickup filter and has been known to cause random lean spots and early failure. The best option for a returnless car is to run the variable rate returnless SVT Focus pump. (255 l/hr and only ~$85 ) Also DO NOT put the bottom pickup filter back on! 2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.

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