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fast 102mm fuel injector / rail help

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Old 06-03-2010, 09:29 PM
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Default fast 102mm fuel injector / rail help

just got my fast 102 today and i put my ls2 stock rails and injectors on it, it dont seem like the injector fits down in the intake all the way. Anyone eles have this trouble? I just want to make sure it wont leak thanks mike
Old 06-03-2010, 11:09 PM
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Mine does the same thing. Runs good but I've yet to get it dyno tunned. I did buy the install kit.
Old 06-03-2010, 11:51 PM
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whats the install kit do ??
Old 06-03-2010, 11:54 PM
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If you use your stock rails injectors you need the spacer kit. Call comp tech service and they will know exectly what you need and you can order staight from the tech.
Old 06-04-2010, 12:48 AM
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you dont need a spacer kit if your running ls2 injectors and fuel rail.

you DO need a spacer kit if its ls3 fuel rail and injectors.
Old 06-04-2010, 03:29 AM
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Been there done it ya need em but listen to whom ever you like

or get fast rails and injectors. They look beter anyways
Old 06-04-2010, 06:58 AM
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I didn't like the spacer kit(the injector squirts at the spacer) so got some cnc custom made fuel rails. I'm in Aust so couldn't be bother waiting for FAST rails



This is a pic of spacer

Old 06-04-2010, 07:18 AM
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Nice man.
Old 06-04-2010, 11:35 AM
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found out what my problem was. the top shell of the intake was not seated in the lower part all the way, fixed that last night the injector fits down in the intake alot better now
Old 06-04-2010, 06:55 PM
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Originally Posted by Aussie 6L
I didn't like the spacer kit(the injector squirts at the spacer) so got some cnc custom made fuel rails. I'm in Aust so couldn't be bother waiting for FAST rails



This is a pic of spacer

Nice rails dude...........they are sweet!
Old 06-08-2010, 06:33 PM
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Originally Posted by 1bigcam
found out what my problem was. the top shell of the intake was not seated in the lower part all the way, fixed that last night the injector fits down in the intake alot better now
man i had a hard time gettingf mine to seat down but finally got it on there
Old 06-08-2010, 07:59 PM
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Originally Posted by 402GOAT
Been there done it ya need em but listen to whom ever you like

or get fast rails and injectors. They look beter anyways
This manifold was designed around the LS2 rails and injectors. No kit is need if using LS2 stuff. If you were to run a space on LS2 injectors, the rail wouldn't bolt flush.
Old 06-08-2010, 10:54 PM
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the bolts that came with my intake for the rail are to long i had to use a thick washer under the bolt
Old 06-08-2010, 11:30 PM
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i used ls2 rails and stock style injectors
Old 06-09-2010, 11:54 PM
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wow thanks for the info
Old 06-13-2010, 08:49 PM
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OK! So I have a quick Question. And this may help out quite a few people here.

Which Fuel Rails and Injectors would I need to make the FAST 102/102 setup work on my engine? (403 LS2 Stroker with LS6 Heads)

I have a set of Delphi/Lucas 42 lb. injectors From Speed Inc. and a set of Nasty Performance Billet Fuel Rails now. They fit perfect on my FAST 92/92 setup, But I'm selling the 92/92 setup Wednesday to my brother. I don't want to sell the fuel rails unless I have to, But I wanna know if these will still work on the FAST 102 Intake! Will They still work on the FAST 102mm Intake? Or do I have to sell the Billet Fuel Rails and injectors. Or do I need the spacer kit?

Thanks

James
Old 06-14-2010, 10:33 AM
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The 92 intake was LS1 based and LS1 stuff will NOT fit on the FAST 102. I have new specific rails to fit the FAST 102 with short (LS3/7 style) inj. or tall (LS1/Bosch) inj.
Old 06-14-2010, 01:55 PM
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How much are the new rails for the FAST 102 setup? And are they polished, or are there different options?
Thanks


-James
Old 06-14-2010, 02:17 PM
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Originally Posted by LT1Formula007
How much are the new rails for the FAST 102 setup? And are they polished, or are there different options?
Thanks


-James
i have an ls2 fuel rail for 120 shipped
Old 06-14-2010, 07:01 PM
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I used the fast 146027 billet rails with 65lb fast ls3 injectors on my 102. I think the now sell oe style rails in a kit for the 102 as well.


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