Damper pinnng question
Thread Starter
Le Mans Master
Joined: Jan 2001
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From: Hilton NY
Damper pinnng question
If the harmonic damper is pinned from the outside with a pin facing the center of the crankshaft, not the parallel to the shaft type pin; how is the damper removed and replaced so the pin can be placed in the same drilled holes?
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 5,013
Likes: 508
From: Hilton NY
It's been a few years since the damper was installed and I forgot how it was done. I thought the pin went through the damper hub and shaft but it only goes through the shaft and the damper hub keyway slides over the extended end of the pin.
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Safety Car
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From: Portland OR
If disassembling the engine, you will likely need to knock the pin out to get the timing chain gear off. Unless you got it perfectly aligned with that gears keyway.
When I do these during an engine build, I line the pin up with that keyway.
Anyway, just reinstall the pin prior to reinstalling the balancer.
When I do these during an engine build, I line the pin up with that keyway.
Anyway, just reinstall the pin prior to reinstalling the balancer.
Team Owner
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From: Western NY
Safety Car
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From: Portland OR
The std kit has no keyway.
918993-1 aligns with the keyway. 918993 doesn’t.
Ron
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Team Owner
Joined: May 2001
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From: Western NY
Team Owner
Joined: May 2001
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From: Western NY
If you were REALLY careful, and somewhat lucky, in lining up the fixture, you could probably hit it right. BUT, as I recall, the real reason for using the fixture that locates off the keyway for the lower timing chain sprocket, is so it correctly "clocks" the ATI damper, which has timing marks engraved it it.
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From: Portland OR
Obviously you can’t align it with the keyway in this instance.
With the engine on a stand, no cover and no timing gear in place you can manually align the pin with the keyway. It’s a little tricky.
This pinning style only works for aftermarket balancers with a keyway.
Uneducated autodidact
Joined: Feb 2001
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From: West of the Sabine, Texas
This kit is designed to be used in the car with the front cover on. I did my LS1 in the C5 this way.
Obviously you can’t align it with the keyway in this instance.
With the engine on a stand, no cover and no timing gear in place you can manually align the pin with the keyway. It’s a little tricky.
This pinning style only works for aftermarket balancers with a keyway.
Obviously you can’t align it with the keyway in this instance.
With the engine on a stand, no cover and no timing gear in place you can manually align the pin with the keyway. It’s a little tricky.
This pinning style only works for aftermarket balancers with a keyway.
Uneducated autodidact
Joined: Feb 2001
Posts: 5,413
Likes: 252
From: West of the Sabine, Texas
If you were REALLY careful, and somewhat lucky, in lining up the fixture, you could probably hit it right. BUT, as I recall, the real reason for using the fixture that locates off the keyway for the lower timing chain sprocket, is so it correctly "clocks" the ATI damper, which has timing marks engraved it it.
I thought the fluidamper didn't have to be clocked? Tell me more please....
Team Owner
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From: Western NY
Uneducated autodidact
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From: West of the Sabine, Texas
.
Racer
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From: Illinois
The -1 kit doesn't actually align the new pin with the existing key for the cam gear. It locates off of it but it's about 20 deg off. So the pin needs removed before the cam gear is removed? Seems like an f'd up way to pin the crank.
I didn't notice until I put the fixture on my crank and noticed it didn't line up. You can look at the fixture and see the keyway isn't lined up with the drill bushings.
So what does everyone do? I'm about to scribe a couple lines off the cam key and line up the drill bushing between the lines. Anyone have a better way to line these up without pulling the crank and setting it on a milling machine table. Yes I own a machine shop so the thought crossed my mind. But id mill a slot for a regular key if I went through all that trouble lol.
I didn't notice until I put the fixture on my crank and noticed it didn't line up. You can look at the fixture and see the keyway isn't lined up with the drill bushings.
So what does everyone do? I'm about to scribe a couple lines off the cam key and line up the drill bushing between the lines. Anyone have a better way to line these up without pulling the crank and setting it on a milling machine table. Yes I own a machine shop so the thought crossed my mind. But id mill a slot for a regular key if I went through all that trouble lol.