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> questions on cc'ing heads
type47
post Mar 19 2005, 04:31 PM
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1st) recommend a fluid to use. someone said transmission fluid

2nd) i had to cut my own disk and the fit seems OK, not real tight, about 2mm clearance. do i seal the disk with something to keep the fluid in? i was thinking grease (some easy to clean like synthetic wheel bearing grease)

3rd) do i cc all the chambers and do i deck height all the cylinders? now that i think about it, that's a dumb question, never mind (but i thought it would be good not to erase it for somebodies sake)

4th) what's the tolerance?

TIA
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MecGen
post Mar 19 2005, 05:08 PM
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Hi

QUOTE
1st) recommend a fluid to use. someone said transmission fluid

Any thin oil will work fine
QUOTE
2nd) i had to cut my own disk and the fit seems OK, not real tight, about 2mm clearance. do i seal the disk with something to keep the fluid in? i was thinking grease (some easy to clean like synthetic wheel bearing grease)

I use white Lithium grease, your disc just needs to seal the head above the cyl mating surface.
QUOTE
4th) what's the tolerance?

Shit I don't remember, adjusting CC always from the smallest to biggest (check spec).

cheers
Joe

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DNHunt
post Mar 20 2005, 07:41 AM
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My heads were within a cc of each other 50.5 to 51.5 from Len Hoffman. Include any valve pockets or dishes in the pistons. Decks were within a couple thousands. Compression ratio varied a little more than a tenth. All of that was signed off on by Jake.

Dave
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IronHillRestorations
post Mar 20 2005, 09:50 AM
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Vegetable oil is OK to use, and it's less toxic.
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