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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through August 08, 2010 » How to rotate the engine when measuring the valve clearance? « Previous Next »

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Suomineiti
Posted on Wednesday, August 04, 2010 - 12:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Okay, I have to measure the valve clearance that I can choose the right shim.

Does anyone know how to rotate the engine and when I´m able to measure the exact clearance from each cam?

Thank you!
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Fresnobuell
Posted on Wednesday, August 04, 2010 - 01:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Frankly, if you have to ask this question you should probably seek profession assistance.
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Daggar
Posted on Wednesday, August 04, 2010 - 01:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Get a service manual or have a shop do the work.
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Ccryder
Posted on Wednesday, August 04, 2010 - 01:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

SM is mandatory. Look here for some step by step on the rotation: http://www.badweatherbikers.com/buell/messages/290 431/392174.html?1220559738
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Suomineiti
Posted on Wednesday, August 04, 2010 - 02:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thank you from advices, but I mean rotating the crankshaft!

I know that the Service Manual is very useful but at this moment I have to only measure the clearance.

I think that it is kind of simple thing, I need to know where I should check that the crankshaft and camshaft is in right position? Someone does have the SIMPLE answer I think.
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Bigblock
Posted on Wednesday, August 04, 2010 - 02:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Clearance for each valve should be measured on the base circle of the cam. In other words, the camshaft should be spun 180 degrees from the point of highest valve lift, and checked for clearance there.
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Bigblock
Posted on Wednesday, August 04, 2010 - 02:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

lok at the first post in the link Ccryder posted it shows how to turn the motor.
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Ccryder
Posted on Wednesday, August 04, 2010 - 03:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

To the best of my knowledge, you cannot remove the valve covers without rotating the engine down for clearance to remove the covers.

Just to check the valve clearances you have to rotate the whole motor, that allows you to remove the covers.
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Fast1075
Posted on Wednesday, August 04, 2010 - 06:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Glad to know there are Buells in Finland...best of luck...your english is quite good : )
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Suomineiti
Posted on Thursday, August 05, 2010 - 12:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bigblock: THANKS! That was the information that I needed.


I think that the easiest way to check the clearances is move the whole mainframe which I did. There is a lot of more space to work that if you only rotate the engine in the frame.

Fast1075: Thank you! Yes, we have lot of Buells here in Finland, mostly XB:s and older models. Maybe couple ten 1125R/CR.
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