Timing Marks On Speed Four Won't Line Up

S.ridgett · Mar 25, 2019

Hi everyone. I have discovered that my valve timing was out. Slightly. But no matter how hard I try I can't get the timing marks spot on!!! The arrow on the crank is either a bit before or a bit after the horizontal mark but the cams are spot on. I've spun it over on the starter and I can't hear any noise! Is this normal?

Richard Neale · Mar 25, 2019

I had a similar thing on previous DOHC bikes i guess it things like cam chain wear (and tension) affecting the relative positions., Hopefully its well within the difference of moving a tooth round so as close as you can get without having adjustable cam sprockets..

stevethegoolie · Mar 25, 2019

S.ridgett said: ↑

Hi everyone. I have discovered that my valve timing was out. Slightly. But no matter how hard I try I can't get the timing marks spot on!!! The arrow on the crank is either a bit before or a bit after the horizontal mark but the cams are spot on. I've spun it over on the starter and I can't hear any noise! Is this normal?
Click to expand...

I don't know how normal it is but as Richard says, moving the cam chain one tooth either way will make the timing marks positions noticeably different. And it will then perform like a fart in a trance. If it was okay before then I guess it still will be.

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Timing Marks On Speed Four Won't Line Up

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Timing Marks On Speed Four Won't Line Up

S.ridgett New Member

Richard Neale Active Member

stevethegoolie Elite Member

Triumph T140v Timing Marks.

Timing Marks Bonneville T120

1993 Daytona 900 Timing

1981 Tr7t Ignition Timing Help

Timing Camplate On Pre Unit Gearbox

Share This Page