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Apr 9, 2008 | 06:42 PM

jimwilsonmasonry

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From: indy

inj ?

when machinin the stage 1s would it benifit to hone out the piston just a fraction bigger than called for or would it be bad

Apr 9, 2008 | 07:57 PM

cookie88

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From: Cabot, Arkansas

The amplifier piston is what is creating your fuel pressure. I would think you would want to keep the tolerances as close as possible to maximize it.

Apr 9, 2008 | 09:10 PM

tjbeggs

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From: Silver Lake Dunes, MI

yep what Scott said. When machining injectors into larger injectors you actually shorten the intensifier piston not change the diameter. With stock nozzle there is no sense in going over 160cc cause the stock nozzle can't get all the fuel out. There are some stage 2's and larger out there that go farther but they have larger holes in the nozzle to be able to get the fuel out fast enough.

Apr 9, 2008 | 10:16 PM

jimwilsonmasonry

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From: indy

thats what im talkin about cant you make the holes bigger in the nozzle with some machinin

Apr 10, 2008 | 05:41 AM

tjbeggs

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From: Silver Lake Dunes, MI

Quote:

Originally Posted by jimwilsonmasonry

thats what im talkin about cant you make the holes bigger in the nozzle with some machinin

No the nozzle holes are only around .008 of an inch or something like that. Larger nozzle's are .012 or so depending on application. There are special processes to make them larger but it usually only don't on new nozzles or they are manufactured that size.

With high mileage injectors DIY injectors recommend new nozzles anyway. They are about $400 for a set of 8