Injectors Sitting In Manifold

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KYZAAC
Posts: 312
Joined: Sun Nov 08, 2009 7:09 am
Car: 92 240sx SR

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i was installing my fuel rail on to my new godspeed manifold, i looked inside the manifold and the injectors were cramped up against the side of the manifold. i didnt know if this was a big issue, or no issue at all. i didnt think it would affect the spray pattern but when i asked around i was told it would affect the spray pattern, and it could cause the cylinders to run lean, and if too bad, it could eventually do harm to the engine. (i was warned about knock off s*** but didnt listen :facepalm: )

after talking to someone else, i was told don't worry about, it will not effect anything. so which is it? heres the pics

heres how they sit in the polished manifold
Image

heres how they sit in the cast manifold
Image

where can i get these plasic bushings that sit between the fuel rail and manifold? one cracked on me
Image


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240_SeX
Posts: 506
Joined: Sat Feb 09, 2008 4:02 pm
Car: 1992 240SX SE

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Are the pictures taken of the runners done with the rail bolted down?

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KYZAAC
Posts: 312
Joined: Sun Nov 08, 2009 7:09 am
Car: 92 240sx SR

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yes the rail is bolted tight, i removed and reinstalled multiply times, but theres not much room for error just bolting it down

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PyR0NiAk
Posts: 3851
Joined: Sun Mar 01, 2009 4:29 pm
Car: S13 SR W/ T2 GT3071R .86AR, JWT S4 Cams, 810cc Injectors,Z32 MAF, JWT tuned ECU 87mm 9:1 Compression CP pistons, Manley Rods
Location: Ohio
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frsport sells the spacers

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KYZAAC
Posts: 312
Joined: Sun Nov 08, 2009 7:09 am
Car: 92 240sx SR

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thanks, im getting the manifold replaced

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USMCgetsome
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Joined: Wed Apr 14, 2004 7:38 pm
Car: OWN S13.5 RB25DET/2003 G35
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more details such as where u bought both manifolds and what size side feed injectors.

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OM3GA
Posts: 3041
Joined: Fri Apr 14, 2006 11:41 pm
Car: A Sexy Mobile, 1993 Nissan 240sx 180sx Hatcher

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The cheapest intake manifold i would go with is the ISIS, its got the best reviews. I personally bought greddy but if you need to go with a knock off get the ISIS.

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PyR0NiAk
Posts: 3851
Joined: Sun Mar 01, 2009 4:29 pm
Car: S13 SR W/ T2 GT3071R .86AR, JWT S4 Cams, 810cc Injectors,Z32 MAF, JWT tuned ECU 87mm 9:1 Compression CP pistons, Manley Rods
Location: Ohio
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ISIS is awesome. Only problem is IACV fitment.. (Nothing a drill to one of the bolt holes on IACV can't fix..)

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KYZAAC
Posts: 312
Joined: Sun Nov 08, 2009 7:09 am
Car: 92 240sx SR

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im done with going the cheap route now, i had my experience. i didn't have enuf room in my budget for what i wanted, and didnt wanna end up with half the parts for my build and run outta money.

i had a problem with the IACV too, 3 bolts lines up fine, but the 4th was off just a c*** hair. i can get the 4th started but they are real tight going in, it DOES sit tight against the manifold. i wonder if it will be alight or if i Should i still drill & re-thread?

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PyR0NiAk
Posts: 3851
Joined: Sun Mar 01, 2009 4:29 pm
Car: S13 SR W/ T2 GT3071R .86AR, JWT S4 Cams, 810cc Injectors,Z32 MAF, JWT tuned ECU 87mm 9:1 Compression CP pistons, Manley Rods
Location: Ohio
Contact:

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Just widen the hole on the IACV... Use a drill bit just a TAD bigger... This is what I did.

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OM3GA
Posts: 3041
Joined: Fri Apr 14, 2006 11:41 pm
Car: A Sexy Mobile, 1993 Nissan 240sx 180sx Hatcher

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I had a block off plate made for my IACV spot anyways. So if i would have goten the isis that wouldn't have been a problem. This is the first i heard about that IACV problem. I typically hear about the fuel rail holes not lining up.

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PyR0NiAk
Posts: 3851
Joined: Sun Mar 01, 2009 4:29 pm
Car: S13 SR W/ T2 GT3071R .86AR, JWT S4 Cams, 810cc Injectors,Z32 MAF, JWT tuned ECU 87mm 9:1 Compression CP pistons, Manley Rods
Location: Ohio
Contact:

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They fixed the fuel rail issue... The IACV issue followed... Have you driven your car without the IACV yet? Last one I was in without an IACV jumped around with a fluctuation of ~500 rpms... Sounded ridiculous..


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