Flywheel Ring Gear Replacement. (4SPD)
Thread Starter
Burning Brakes
Joined: Sep 1999
Posts: 931
Likes: 0
From: MI
Flywheel Ring Gear Replacement. (4SPD)
The 14" flywheel is out, but I do not see any bolt to fasten it to the flywheel, except 1 pressed in pin. Do I need to press out this pin? The date code is 71.
Thanks for any suggestion.
Thanks for any suggestion.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Flywheel Ring Gear Replacement. (Ki m Le)
Are you replacing the ring gear on your flywheel? They are pressed on and sometimes tack welded. The dowl pin is to attach the flywheel to the back of the crank.
Your post is a little confussing.
Your post is a little confussing.
Melting Slicks
Joined: Jul 2001
Posts: 2,609
Likes: 12
From: Massapequa Park NY
Re: Flywheel Ring Gear Replacement. (Ki m Le)
You'll need to take it to a machine shop. The ring gear is an interference fit, the ring gets heated on a hot plate to expand the diameter, then the flywheel gets dropped/pressed into the center.
removal of the old ring gear is usually just to break the rin in one or two places with a chisel
removal of the old ring gear is usually just to break the rin in one or two places with a chisel
Le Mans Master
Joined: Aug 2000
Posts: 6,362
Likes: 7
From: Brazos TX
Cruise-In IV Veteran
Cruise-In V Veteran
Re: Flywheel Ring Gear Replacement. (Ki m Le)
I just did this a few months ago. It's really easy.
1. Set the flywheel on wood blocks or something to elevate the actual ring gear off the work surface. The gear comes off the front (relative to how it's installed in the car) so the clutch side surface should be pointing up.
2. With a hammer and a steel punch/drift hit the ring gear in a crossing pattern until it comes off.
3. Heat the new ring gear in the oven at about 300 degrees for 20 minutes.
4. Turn the flywheel so the clutch surface is facing down. Slip the new ring gear on. You may have to tap it on but it won't require much force.
BTW I got may new ring gear from http://www.gmpartsdirect.com for $34.00 plus $8 or so for shipping. The local dealer wanted $60 and didn't have it in stock. GM part number is 460583.
Good luck!
1. Set the flywheel on wood blocks or something to elevate the actual ring gear off the work surface. The gear comes off the front (relative to how it's installed in the car) so the clutch side surface should be pointing up.
2. With a hammer and a steel punch/drift hit the ring gear in a crossing pattern until it comes off.
3. Heat the new ring gear in the oven at about 300 degrees for 20 minutes.
4. Turn the flywheel so the clutch surface is facing down. Slip the new ring gear on. You may have to tap it on but it won't require much force.
BTW I got may new ring gear from http://www.gmpartsdirect.com for $34.00 plus $8 or so for shipping. The local dealer wanted $60 and didn't have it in stock. GM part number is 460583.
Good luck!
