900 cylinders and decompression holes

[900kingkitty]

got a used set of cylinders and one of them has the decomp. hole and the other doesn't, secondly the one with the decomp hole has it off to the side , not right above the exhuast valve but over the exhuast port to the side, can these cylinders be used together? will it affect comp or anything?

[76FoMoCo]

the 03 had no decompression hole and the 04-06 do you can run them together just fine. I have done it myself and no noticeable diff.
the decomp hole should be about 1/3 off center of the main port.

[HOBB-Z]

Some of the dec holes were in the middle and some were off to the side.

If it bothers you to have 2 different cyls. you can plug the one with the hole.


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[900kingkitty]

how do you plug the hole , without wrecking the nickasil?

[HOBB-Z]

You can thread a set screw in, it may chip the nikasil a little but a stone wheel and a dremel will clean it up.

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[-Z-]

Originally Posted by 900kingkitty

how do you plug the hole , without wrecking the nickasil?

My buddy always does it with JB weld
He did it to my 1 liter says you gain 1 1/2 hp

[Doc]

more like half a horse on the top

[HOBB-Z]

If you use an epoxy on a cyl. spend the money on Devcon, it is designed for that type of application.

[900kingkitty]

Originally Posted by HOBB-Z

If you use an epoxy on a cyl. spend the money on Devcon, it is designed for that type of application.

where do you get that at?

[HOBB-Z]

I ordered mine off the net, its been a long time and I can't remember where I got it.