Help with top end assembly

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May 7, 2015 | 02:36 PM

Road Star

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From: Orange County

Help with top end assembly

Just trying to confirm, there is no cylinder base gasket, is there? Just an o-ring?

May 7, 2015 | 04:12 PM

OldEnuf2NoBtr

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From: Doghouse... mostly

Correct,just an O-ring.

May 7, 2015 | 04:41 PM

Road Star

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From: Orange County

Quote:

Originally Posted by OldEnuf2NoBtr

Correct,just an O-ring.

Ok. Thanks.

BTW, what is the break-in procedure for new pistons?

May 7, 2015 | 06:29 PM

OldEnuf2NoBtr

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From: Doghouse... mostly

The break-in for the new rings should be about 200-300 miles of laid back cruising varying the rpm's.

May 7, 2015 | 09:39 PM

Road Star

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From: Orange County

Is there any need for clear silicone sealant? It was on the list that came with my cylinders and pistons.

May 7, 2015 | 09:44 PM

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From: Centennial, CO

I did not use any sealer when I did mine.

May 7, 2015 | 09:55 PM

Road Star

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From: Orange County

This is what came with the kit.

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May 7, 2015 | 10:05 PM

rockajet1

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From: Virginia Beach

Quote:

Originally Posted by Road Star

Ok. Thanks.

BTW, what is the break-in procedure for new pistons?

S&S says 50 miles under 2500 rpms w/ no constant rpms. Then an oil change.

Then 500 miles under 3500 rpms w/ no constant rpms. Then an oil change.

Then take it easy until you get to 1000 miles.

I recently completed the build noted in my signature. I did the 50 miles (and oil change) and made it til about 400 miles before I started riding it hard (meaning bouncing off of red line) this week. My buddys riding behind me didn't see any red hot pieces of piston ring or smoke coming out of my exhaust, so I think the rings are seated OK. Gonna change the oil and I'm getting it dyno tuned next week. I believe if it is put together right, what I did is more than adequate for a proper break in.

BTW, a friend got a 106 S&S set up done by T-man and rode it like he stole it right out of the shop and his runs great and doesn't smoke at 20K.

Good luck!

Last edited by rockajet1; May 7, 2015 at 10:11 PM.

May 7, 2015 | 10:13 PM

#10

Road Star

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From: Orange County

Quote:

Originally Posted by QC

Interesting, but mine from Hillside did not come with any nor was any recommended.
I can't think of where it would be used, either. I get the lube on the bolts and studs.

Thanks. Always nice to get another opinion.