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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Big Mechanicals: Head, Cyl, Piston, Rod, Crank, Flywheel, Cases, Bearings » Archive through July 16, 2008 » Heads help needed « Previous Next »

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Alessio66xb12r
Posted on Tuesday, September 25, 2007 - 08:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

who know the squish band correct size for a race engine and for a street engine.
xb 88'' 10.5 c.r. cp pistons , 15° degrees comb. chambers ???
any help welcome
bye Alessio

heads
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Blake
Posted on Tuesday, September 25, 2007 - 03:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not sure there is a "correct" size. The heads need to match the pistons is the main thing.
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Alessio66xb12r
Posted on Tuesday, September 25, 2007 - 03:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"correct size" i mean ...values you must stay between for no knocking symptoms. i think , but i'm not sure , with this kind of heads/pistons combination 0.035 ( around 0.8/0.9 mm)is the correct size.
i said ....i'm not sure.
any input will be appreciated
thank you all
Alessio
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Pammy
Posted on Friday, September 28, 2007 - 12:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

.030 is optimum. .035 is fine.
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Alessio66xb12r
Posted on Friday, September 28, 2007 - 05:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thank you very much
i got 0.035 ( the heads gaskets size)..
...so i'm fine.
thank's again Pammy
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Pammy
Posted on Friday, September 28, 2007 - 06:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The proper way to measure is to put clay on the dome of the piston and turn the motor over(with the motor bolted)...then measure the clay. Then you are not guessing. You will know exactly the clearance you have.

(Message edited by pammy on September 28, 2007)
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Alessio66xb12r
Posted on Saturday, September 29, 2007 - 11:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i did the "soft metal"(i don't know the english word) wire method , i hope is the same.
bye Alessio
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Pammy
Posted on Monday, October 01, 2007 - 02:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Solder is fine. We prefer clay, but a lot of folks use solder or plastiguage.
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Alessio66xb12r
Posted on Tuesday, October 02, 2007 - 07:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thank's again
i did'nt " closed" the engine yet because i did a wrong gap on one ring . i waited until yesterday for a new one. today i'm going to finish it ....i'm new on this practice but i love to do myself and learning on. pics will follow...
bye Alessio
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Pammy
Posted on Tuesday, October 02, 2007 - 01:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Good luck to you. If you need any help, we are all here.
Pam
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Alessio66xb12r
Posted on Friday, October 05, 2007 - 08:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i'll show some pics soon
thank you again
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