[Vwdiesel] Re: Crankshaft Sprocket Wear
gavrik at cablespeed.com
Tue Mar 9 05:21:48 EST 2004
Yep. Not sure what I was thinking -- running without the drive belt
As to the crankshaft sprocket, I plan to replace it with a new one or
one in far better condition. It looks like the wear is mainly on the
crankshaft sprocket -- the others look ok.
Since the engine is in the car with the transaxle mounted I need to
build a tool to keep the crankshaft from rotating. Tomorrow I will
make something around two feet long that will bolt to the crankshaft
sprocket using the four mounting holes for the crankshaft pulley.
Thanks, to all the folks that responded.
On Tue, 09 Mar 2004 00:09:48 -0600, you wrote:
>Gavrik, I'm not trying to sound like an ass, but it's common knowledge if
>you run without a belt cover, you are fortunate that a small pebble hasn't
>thrown into the belt and screwed your timing and the valves by causing the
>belt to jump a few teeth. This is a definite risk.
>If the wear looks enough to bother you, yes replace the sprocket. Losing an
>engine over one part you thought you should have replaced would really suck.
>> -----Original Message-----
>> From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]On
>> Behalf Of Gavrik Peterson
>> Sent: Monday, March 08, 2004 2:18 PM
>> To: vwdiesel at audifans.com
>> Subject: [Vwdiesel] Crankshaft Sprocket Wear
>> I am in the process of installing a rebuilt 1.6 liter diesel engine in
>> my rabbit and a friend noticed that the crankshaft sprocket shows
>> visible wear on the teeth.
>> I measured the diameter of this sprocket with a dial caliper and found
>> that the center part where the drive belt runs has a diameter that is
>> .010 inch less then the outside part where the drive belt does not
>> cause much wear. There is enough difference in diameter that it is
>> easy to feel.
>> I have been running this engine with no drive belt cover for a long
>> time. It appears that this has allowed road dirt to get to these
>> components and cause more then normal wear on the sprocket. Is it
>> common knowledge among diesel people that this is a bad practice?
>> So, is it possible that this amount of wear could increase the
>> likelihood of skipping a tooth, and would it be a good idea to replace
>> this sprocket? Or, am I being too fussy?
>> Gavrik Peterson
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