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timing belt tension? - Engine & Ancilliaries/Gearbox - The Lotus Forums - Lotus Community Partner #ForTheOwners Jump to content


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timing belt tension?


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At LotusBits today to get a rebuilt tensioner for my cambelt change this weekend. They said a twist of 'just under ninety degrees' at the longest run was right. They also recommended turning the engine three times by hand before testing as this will be more accurate. Jason also put some great advice on my resto thread.

Regular restorer. Rather less reliable forum poster!

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I had all of the same correct advice as mentioned above, but managed to slightly over tightened mine initially. It only noticed when accelerating hard here there was a whine, slackening it just took a moment as access to the tensioner bolt was easy.

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Cheers guys. I think I got it right..

one thing, I had a right job getting the belt back on.. wrestled with it for ages, had thenpin in the tensioner, I even had the tensioner securing bolt loose, just wouldn't go on... then... it just magically popped on.. is there a knack?

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It's probably the snubber on the top. I think it's over the top of the inlet sprocket. It's there to stop the belt jumping a tooth. I had a similar experience. You can slacken and then re-position it. There's a feeler blade setting ( think it's about 1.5 mm) but don't quote me on that. It's in the manual though.

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