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Buell Forum » Old School Buell » Archive through December 28, 2013 » Rear Cylinder Clearance « Previous Next »

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Buckley
Posted on Monday, December 16, 2013 - 10:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey all. I am working on rebuilding my old bike. When throwing the new engine on, there is not much clearance between the rear cylinder and frame. Is this always the case?

In adjusting the rear and front tie bars I was able to get about .2" of clearance. It it always this tight in this area? Or do I need to tweak my tie rods a bit more?
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S1owner
Posted on Tuesday, December 17, 2013 - 07:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Adjust the tie rods? Bad Idea.
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1313
Posted on Tuesday, December 17, 2013 - 12:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

One very important question:

Is the frame just laying on the engine or is the engine suspended from the frame when you measure this tight clearance?

If the engine is not suspended from the frame, you'll definitely notice a difference once it is.

Concur on adjusting tie bars being a bad idea,
1313
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Kalali
Posted on Tuesday, December 17, 2013 - 01:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On my bike the tightest spot between the rear cylinder and the frame is around the top second fin near the rear breather port and that's a tad more than 0.25 inches. Hope this helped.
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Jim2
Posted on Tuesday, December 17, 2013 - 05:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Make sure your front iso is on right. There are notched frames and un-notched frames. The front iso is mounted different depending on the frame. It will make a difference in your clearance.
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Buckley
Posted on Tuesday, December 17, 2013 - 11:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The engine is mounted to the frame right now. This results in the .020" clearance. In regards to adjusting the tie rods, these were new off ebay so needed to be adjusted either way
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Oldog
Posted on Monday, December 23, 2013 - 04:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

. In regards to adjusting the tie rods, these were new off ebay so needed to be adjusted either way

If you have Buell tube frame specific tie bars its not recommended that you adjust them

If you have e bay some ones take offs from God knows what - have at.

the Factory manual is quite specific about NOT adjusting them.}
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