How-to: Install Race Cam Chain Tensioner - Page 38 - Triumph675.Net Forums
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post #371 of 375 Old 04-13-17, 23:55
Supervetteduhman
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I'm kind of lost here. I ordered the part and now looking through the posts I realized that I don't have any weird vibrations at 6-8 thousand but at idle it ticks. I have an 09 Daytona. Is the tick at idle normal?

Black 2009 Triumph Daytona 675 w/TOR exhaust
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post #372 of 375 Old 04-14-17, 01:41
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Sorry if I missed this on the previous 38 pages...

Just curious... what is the purpose of setting the timing marks at the beginning of the whole procedure?

I'm thinking that the tensioner should work regardless of the position of the timing chain.

Is aligning the timing marks just a way to confirm that the timing cams haven't slipped during the swap? Such that you check the timing marks at the end of the tensioner swap, to make sure everything is still kosher?

Or is there something special at TDC, such as the cam chain being the loosest there and starting with the tensioner from that point?
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post #373 of 375 Old 05-07-17, 20:08
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Quote:
Originally Posted by Endopotential View Post
Sorry if I missed this on the previous 38 pages...

Just curious... what is the purpose of setting the timing marks at the beginning of the whole procedure?

I'm thinking that the tensioner should work regardless of the position of the timing chain.

Is aligning the timing marks just a way to confirm that the timing cams haven't slipped during the swap? Such that you check the timing marks at the end of the tensioner swap, to make sure everything is still kosher?

Or is there something special at TDC, such as the cam chain being the loosest there and starting with the tensioner from that point?
it really shouldn't matter. once you have the ape tensioner tensioned they tell you to rotate the engine through a few crank rotations to tighten any additional slack in the chain. so you're moving away from TDC there anyway.
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post #374 of 375 Old 05-16-17, 13:07
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Quote:
Originally Posted by Endopotential View Post
Sorry if I missed this on the previous 38 pages...



Just curious... what is the purpose of setting the timing marks at the beginning of the whole procedure?



I'm thinking that the tensioner should work regardless of the position of the timing chain.



Is aligning the timing marks just a way to confirm that the timing cams haven't slipped during the swap? Such that you check the timing marks at the end of the tensioner swap, to make sure everything is still kosher?



Or is there something special at TDC, such as the cam chain being the loosest there and starting with the tensioner from that point?

It kind of is important as if the chain jumps a tooth on the intake/exhaust cams, it will be a lot easier and safer to just realign the cams at TDC rather guess where they should have been or rotating the engine with incorrect cam timing.
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post #375 of 375 Old 05-23-17, 15:39
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I read somewhere that TDC is where the timing chain is at its loosest. Doesn't seem to make sense to me, as aren't all the sprockets located in fixed locations? It's not as if the chain sits on the cam lobes themselves which are eccentric.

Any way to ensure the chain hasn't slipped before firing up the engine? I guess for the really paranoid, would this work? Put a paint mark on the timing chain when you first find TDC, and then confirm it's still in the same position once the new tensioner is place, and the engine turned around a couple revolutions?

I finished the APE install on mine and so far haven't blown up the engine. But wasn't comfortable with the leap of faith of firing up the engine without some form of prelim double check.
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