Will these fit?

Performance mods and Advanced Stroker discussion.
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RAPTORFAN85
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Will these fit?

Post by RAPTORFAN85 »

http://cgi.ebay.ca/SB-Fuel-Injectors-24 ... m153.l1262

will these fit in a 2001 wrangler 4.0?

TIA
jake
"Strrrrroke me, stoke me...."

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gradon
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Re: Will these fit?

Post by gradon »

The injectors pictured will fit pre 99 jeeps, not your 2001, due to the newer style harness you have. You'll have to find ev6 style connector injectors iirc.
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SilverXJ
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Re: Will these fit?

Post by SilverXJ »

Not only that they will be flowing too much fuel for a 4.0l or a 4.7L
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seanyb505
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Re: Will these fit?

Post by seanyb505 »

Those are actually the exact injectors I have in my 97 stroker. Runs fine, although I have never tuned it. I dont think they are using too much fuel as I still get 16-17 mpg, same as before the stroker.
Now I can be like all those other awesome people with more than one Jeep in their sig, but now I have to say one of them is sold:(
97 XJ 4.6
90 MJ 4.0 - sold

I want to have as many Jeeps as children. DD, offroader, drag MJ and another one. 4=4
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SilverXJ
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Re: Will these fit?

Post by SilverXJ »

seanyb505 wrote:Those are actually the exact injectors I have in my 97 stroker. Runs fine, although I have never tuned it. I dont think they are using too much fuel as I still get 16-17 mpg, same as before the stroker.
You did see that at 50 psi (one PSI more than what your system is pushing) they are putting out 27lb? That is a little much for a 4.7L. In your case at 49psi theyw ould putting out 26.6lb. I had a set of ford Cobra injectors that flowed similar to those. With out the Apexi interfering it was putting out greater than 10:1 at WOT, i.e. rich. And my wideband only goes as high as 10:1, so it may have been richer. I am swapping them out for a lower flowing injector.
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RAPTORFAN85
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Re: Will these fit?

Post by RAPTORFAN85 »

If you use this equation and expect 250HP:

Injector flow rate (lb/hr) = [Expected HP x 0.5 (BSFC)] / [no. of cylinders x 0.8 (injector duty cycle)]
( 250 x 0.5=125) / (6 x .8=4.8) = 26.04


Actual injector flow rate = Rated injector flow rate at 50psi x square root of (FP/50PSI)
27 x .98 = 26.46

Thats pretty close, and should work fine right?
"Strrrrroke me, stoke me...."

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SilverXJ
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Re: Will these fit?

Post by SilverXJ »

Those equations don't really work. I've tried several of them and they all say like 26lbs. However, I have ran rich with 26lbs and for a stroker it seems every one is using 24lbs.
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