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Q45 injectors

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Old 03-22-2007, 08:51 PM
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Q45 injectors

Does anybody know if the Q45 370cc injectors are the same injectors as the stock SR injectors? Im looking into buying a set for my KA-T project and need to know if theyre the same before I buy them.
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Old 03-22-2007, 09:13 PM
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why dont you just buy aftermarket injectors probably easier to find and cheaper to
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Old 03-22-2007, 09:45 PM
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forums are over flowing with stock sr injectors. average price 120 bucks..

taken from another forum

Side Feed
Engine Style Size Impedance* Years / Models
Nissan KA24DE Side feed 270cc High S13/S14
Nissan SR20DET Side feed 370cc High S13/S14
Nissan SR20DET Side feed 480cc High S15
Nissan RB25DET Side feed 370cc High R33/R34
Nissan VG30DETT Side feed 370cc High Z32

Infiniti VH45DE Side feed 370cc High All Years

NOTE: 90 - 94 Z32 uses a style of injector that is non-compatable with KA fuel rails (still sidefeed), while 95 - 96 uses the same injector as the RB25DET and SR20DET, etc.

Mazda FD Side feed 550cc High 93-98
Mazda FD Side feed 850cc High 93-98
Mazda 20B Side feed 550cc High JDM Mazda Cosmo?

Subaru JDM STi Side feed 550cc (565cc?) High pre 99
Subaru STi Side feed 565cc High 03+

Toyota 7M-GTE Side feed 430cc (440cc?) Low Supra mk3 turbo
Toyota 2JZ-GTE Side feed 550cc Low Supra mk4 turbo
Toyota 3S-GTE Side feed 430cc (440cc?) Low MR2, 91+
Toyota 4A-GZE Side feed? 365cc Low MR2, MK1
Toyota Celica GTS Side feed? 310cc High 2000+
Toyota JDM 1JZ-GTE Side feed 430cc Low Chaser, Supra mk3?
Toyota JDM 2JZ-GTE Side feed 430cc High?* Supra mk4 turbo
Toyota JDM 7M-GTE Side feed 430cc Low Supra mk3 turbo

note in order to run low impedance injectors. you must install one of the following resistor boxes

obd0-1 preludes, obd0 civics, crxs, and integras, as well as g1 and g2 eclipses and talons

Last edited by Biggamehit; 03-22-2007 at 09:53 PM.
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Old 03-23-2007, 07:24 AM
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Originally Posted by Biggamehit

Infiniti VH45DE Side feed 370cc High All Years
So if I understand correctly from this Q45 injectors are plug-and-play for the KA motor, correct?
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Old 03-23-2007, 07:50 AM
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go for it. The S15 injectors sound sexy Ry
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Old 03-23-2007, 08:43 AM
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yea i sold my sr injectors for 100 bucks a while ago..not hard to find
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Old 03-23-2007, 09:54 AM
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As sexy as the s15 injectors would be, they'd be overkill for a t25 (which is what im planning on running)
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Old 03-23-2007, 11:06 AM
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Dude T25? Project: Good Lordy 240! should run nothing less than a T28BB (S15 to match the sex injectors). Keep it real homie
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Old 03-23-2007, 04:01 PM
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im picking up STi injectors next week.
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Old 03-23-2007, 04:01 PM
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Originally Posted by Biggamehit
im picking up STi injectors next week.
whats the flow rate on those biggame?
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Old 03-23-2007, 04:05 PM
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Subaru JDM STi Side feed 550cc (565cc?) High pre 99
Subaru STi Side feed 565cc High 03+

more info

taken from another forum
------------------

The following chart displays the maximum obtainable CRANKSHAFT horsepower vs. injector flow rate at 100% duty cycle, assuming a BSFC of .55 lbs./hp/hr. For Wankel and 2 stroke engines, multiply max hp in table by 0.9 to compensate for the higher BSFC of these engines. Injectors should be sized for 75-85% maximum duty cycle on engines used in constant high power applications such as race cars, aircraft and boats.


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Old 03-23-2007, 05:01 PM
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better get an afc..
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Old 03-23-2007, 05:03 PM
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Me?????????

I have always had safc and 550 is the limit.. great for me..


and yes to your question about the q45 injectors.
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Old 03-23-2007, 05:30 PM
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Originally Posted by Biggamehit
Me?????????

I have always had safc and 550 is the limit.. great for me..


and yes to your question about the q45 injectors.
no i meant him, if hes gonna get that big of injectors..yea i run an afc with 550's..mine are out of a nissan leopard
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Old 03-23-2007, 06:35 PM
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oooohhh K. coolness.
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