Well, that is just the question. How bad are the teeth on my cams? How vital is it for these teeth to be square? In my opinion, they look pretty damn pointy. Should i seriously consider new sprockets? Let me know your 2 cents.
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1989 Alpine 325is 2dr m50 swapped
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1991 318is 4dr rallycross
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1991 Alpine 318is coupe - sold -
yupe you need new sprockets
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yeppp time for a timing overhaul... mine as well do guides while your in thereComment
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fawk those are pointy as fawk.....time for new ones for sureStrategic nw e30 commandOriginally posted by bmwm42Comment
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Like a motorcycle drive chain..
recommended to replace chain along with sprockets.
(and guides)
(and gaskets/seals of course)Comment
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Check the guides for wear before you order new ones. They're really expensive.Originally posted by GrueliusComment
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Guides on my 136K mi. m42 that showed any wear were the lower one and (of course) the tensioner guide.
Then there's the long/updated nylon/plastic guide..
The logic that goes through my head is that with gears worn like that - then it's likely the whole timing system should be refreshed (chain/all sprockets/tensioner/all guides).
Guides become brittle with heat cycles - and break apart into oil/circulation system.
It'd be a shame to go through all the work and money to replace the chain and sprockets - only to have a guide fail shortly thereafter.
And yeah - I just looked at what I recently spent on all guides.. it's not like any one of them is terribly expensive - but they do totally fuckin add up.Comment
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