C
Cole
Does the 1983 1800 Engine have a timing chain or belt? if so where is it?
Cole said:Does the 1983 1800 Engine have a timing chain or belt? if so where is it?
Ed Fortmiller said:Not knowing much about belt vs. chain vs. gears, it would sound to me likeno belt or chain - just gears.
the gears would be the best system to use. What then, is the advantage to
switching to a belt or chain?
-Matt
Hallraker said:Ed Fortmiller said:Not knowing much about belt vs. chain vs. gears, it would sound to me like
the gears would be the best system to use. What then, is the advantage to
switching to a belt or chain?
-Matt
The distance between the crank and the cams. On the pushrod
engines there is only one cam and it's just above the crank,
and since the crank gear is half the tooth count of the cam
gear the two gears fit nicely there. On overhead cam engines
it would be very impractical to have a train of gears running
from the crank to the cams, so a belt or chain isused. Now
in my opinion a well-specified chain drive system is preferred,
but it's more expensive than belts so most makers use rubber
belts to drive the cams.
Plus, using belts builds in a required maintenance cost that
profits the maker to some extent.
JazzMan
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JazzMan said:I have had some OHC motorcycles that were gear driven. My BMWHallraker said:The distance between the crank and the cams. On the pushrod
engines there is only one cam and it's just above the crank,
and since the crank gear is half the tooth count of the cam
gear the two gears fit nicely there. On overhead cam engines
it would be very impractical to have a train of gears running
from the crank to the cams, so a belt or chain isused. Now
in my opinion a well-specified chain drive system is preferred,
but it's more expensive than belts so most makers use rubber
belts to drive the cams.
Plus, using belts builds in a required maintenance cost that
profits the maker to some extent.
JazzMan
motorcycle, however, uses pushrods and is gear driven - just like the
old subes. Gears are typically noisy. My 1990 BMW 325 is belt driven -
however, it is the only car engine that BMW has ever made that is. The
rest are exclusivley chain driven. Belts are likely to be cheaper and
as was preciously stated keeps the service dept's in business.
TG said:NOISE! Chains are noisier than belts and gear drives are noisier
yet. The other consideration is the rotational mass which puts
wear on other components and reduces efficiency. TG
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