Waterpump gear drive
Thread Starter
Instructor
Joined: Jul 2002
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From: Virginia Beach Va.
Waterpump gear drive
Has anyone experienced waterpump drive bearing failure? If so , what did it sound like? Has anyone experienced waterpump gear noise, what does it sound like. Thanks
For clarification, I'm referring to the waterpump drive gear/bearing that is mounted to the block and is driven by the cam gear behind the timing cover.
For clarification, I'm referring to the waterpump drive gear/bearing that is mounted to the block and is driven by the cam gear behind the timing cover.
Last edited by GR8T WYT; Aug 20, 2008 at 01:07 PM.
Le Mans Master
Joined: Dec 2004
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From: Myrtle Beach SC
St. Jude Donor '05-'06
On what year and why do you ask.Of course bearings fail and coolant leaks out of them on a LT1.Various sounds occur from a gravely sound to squeaking it would be easier if you describe what you have?
Thread Starter
Instructor
Joined: Jul 2002
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From: Virginia Beach Va.
My LT1 engine is emitting a whining/whistling sound that goes up & down with rpm. I have removed the belt and the sound is still present. I have checked for air leaks and others, none found. I know that gears can make a whining sound as in a timing gear drive set so the only gears in the engine are driving the waterpump, therefore my question. The waterpump drive also has a bearing, they to can whine. So can anyone verify this to be a real problem? Thanks (1996)
Melting Slicks
Joined: Oct 2004
Posts: 2,510
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From: Austin Texas
Take a look at the WP bearings in the below thread. The bearing seal had deteriorated, and bearings exposed. Scary thing is, there was no audible grinding or scratching when car was running. The WP began to leak onto my Opti, causing intermittent idle surge when the engine was hot.
It appeared that none of the bearings actually fell out, so that is probably why I didn't hear any grinding or squeeling from the WP.
http://forums.corvetteforum.com/show...ight=optispark
Sounds like you need to get out your automotive stethoscope to pinpoint where this noise is coming from.
It appeared that none of the bearings actually fell out, so that is probably why I didn't hear any grinding or squeeling from the WP.
http://forums.corvetteforum.com/show...ight=optispark
Sounds like you need to get out your automotive stethoscope to pinpoint where this noise is coming from.
Last edited by MikeC4; Aug 20, 2008 at 01:32 PM.
Thread Starter
Instructor
Joined: Jul 2002
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From: Virginia Beach Va.
Thanks Mike, but you guys are not reading my post, I'm not talking about the waterpump bearings but the driveshaft bearing that is behind the front cover and connects to pump shaft via a splined coupler.
http://www.9c1.com/technical/LT1_rebuild/ar99928.htm
Check this site and about mid way down the page you should see the pump with it's gear drive attached. right above it is the gear and shaft alone.
http://www.9c1.com/technical/LT1_rebuild/ar99928.htm
Check this site and about mid way down the page you should see the pump with it's gear drive attached. right above it is the gear and shaft alone.
Last edited by GR8T WYT; Aug 20, 2008 at 02:04 PM.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
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From: Myrtle Beach SC
St. Jude Donor '05-'06
I have never read of that being an issue I suppose anything is possible but I highly doubt that is your issue. I would suggest using a mechanics stehoscope to ID the location a little more.Listen to and check the WP and vacuum lines.
