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A productive morning today. A couple of warm and dry days at last certainly helps.
New battery arrived and installed but not connected just yet. Camshaft timing checked and OK, that's in another thread. Left side engine cover installed and clutch adjusted. As suggested here some where, the...
OK, a productive morning in between domestic chores.
Set up a DTI on left side inlet valve (closed). Rotated the crankshaft anticlockwise until DTI just moved. Caught it at 0.002" valve lift. The manual says the left side fully advanced timing mark is at 38 degrees btdc. The manual says the...
A bit of a lottery? There's nothing there that can't be recovered I would say. But that's only from the pictures shown here. I would want to understand the condition of the rest of the motor before committing to expensive repairs on worn valve gear. Eminently recoverable, but not cheap and the...
I have seen a good number of header pipes cracked under wrapping. The wrap causes the steel to overheat and that causes cracking. The only justifiable reason I can think of for wrapping a bike's header pipes is to hide damage. Personally, I would insist the wrap is removed and I'd inspect the...
For completeness, this is a screenshot of the page in the Yamaha manual for checking inlet valve opening point with a DTI. Inlet valve opens at 36 degrees btdc. Fully advanced timing mark is at 38 degrees btdc. One tooth error in camshaft timing is 10 degrees. So it should be pretty obvious if...
Thanks. I thought the "T" was TDC, now I understand the line to the right of T is TDC.
What I see reading the manual is the inlet valve should open at 36 degrees btdc or around 9/10 of the distance from the TDC mark to the fully advanced mark. The manual says a timing error of one tooth is 10...
Thank you for that. Your experience is what I would expect to see with a stretched camchain.
I have just been reading the Yamaha shop manual. I believe I can verify camshaft timing by just removing one inlet valve cover.
Basically, the manual states the inlet valve lifts off it's seat at 36...