pdm
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 posted on 1/8/10 at 06:04 PM |
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Setting cam timing
Evening all
Just been thinking through cam timing and have a question please ?
Ages ago I posted about putting in cams and how to time them - I got some sound advice (as usual here) about timing and how to measure lift of cams to
work out degrees and TDC etc. So that bit I think I understand now.
Taking this a bit further - on my "practice" engine with the head off and supported, when turning by cam by hand, the cams had a spot
where they would "rest" - i.e. if you turned the cam sprocket then they would turn but if you let go they would sort of spring into
"rest" position.
So my question is - assuming you've got all the timing sorted, how do you "hold" the cam at the right position without it springing
to a "rest" position whilst you put the belt on ?
Don't worry I'm not doing this yet but I do want to plan out what work I am going to do on my donor engine.
As always thanks in advance,
Paul
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Dusty
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| posted on 1/8/10 at 08:04 PM |
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Depends on the cam to cam wheel fit. Some have a key(pinto) so the wheel is locked to the cam so you can hold the wheel or put a spanner on the cam
itself to align. Some are friction fit(zetec) and you can hold/lock the cam in position with a special tool or bar so it doesn't flip back to
it's comfy position while you time it up.
[Edited on 1/8/10 by Dusty]
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pdm
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| posted on 2/8/10 at 07:22 AM |
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Thanks - I'll have to have a look for a locking tool
cheers
Paul
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