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928 Flywheel Ring Gear Question

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Old Jul 25, 2014 | 11:02 PM
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Default 928 Flywheel Ring Gear Question

Okay guys, its late and I am not sure what I am missing here. For those of you keeping notes, I replaced my 79 clutch back in October. I purchased another flywheel to have machined and available to swap out since I am not happy with the slight chatter I have in reverse.

This is the flywheel I have just picked up. My existing set up currently installed has the ring gear on the intermediate plate. This flywheel has a ring gear (of sorts) on it as well, which appears to be easily removable.

Just curious.....whats the deal with this gear?
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Old Jul 25, 2014 | 11:13 PM
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Timing ring, I am really not thinking tonight.

I guess this is the wrong flywheel
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Old Jul 26, 2014 | 09:25 AM
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You devil. I think you paid a buck for that flywheel! I was away and unable to bid on it.
What you have is somewhat unique. Its an 85 86 flywheel. Notice it has a small additional mounting hole to reference the flywheel to the crank unlike earlier ones. Your options: I think you can remove the ring gear and use it as is. Hopefully someone else will chime in and confirm this. Or you can sell this flywheel for considerably more than you paid for it and source another earlier flywheel. I was going to buy it as a spare. The intrigue of this part is it is the correct flywheel to put the lighter earlier clutch on an S4.
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Old Jul 27, 2014 | 11:12 AM
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Originally Posted by FBIII
You devil. I think you paid a buck for that flywheel! I was away and unable to bid on it.
What you have is somewhat unique. Its an 85 86 flywheel. Notice it has a small additional mounting hole to reference the flywheel to the crank unlike earlier ones. Your options: I think you can remove the ring gear and use it as is. Hopefully someone else will chime in and confirm this. Or you can sell this flywheel for considerably more than you paid for it and source another earlier flywheel. I was going to buy it as a spare. The intrigue of this part is it is the correct flywheel to put the lighter earlier clutch on an S4.
Guilty as charged! I am in for $15.00 total with shipping. The part number is the same as my 79, so I can easily heat the timing gear to remove it.

Thanks for the reply, I was confused as the units I have seen previously was the later s4 style
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Old Jul 30, 2014 | 04:38 AM
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'78-79 should have different shape flywheel besides LH-jet gear. Surface isn't all flat like these later versions. It has outer edge which centers intermediate plate. Its missing on '80-83 and this '84-86 version. Pictured part was also used in '84 ROW S.
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Old Jul 30, 2014 | 10:06 AM
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Originally Posted by Vilhuer
'78-79 should have different shape flywheel besides LH-jet gear. Surface isn't all flat like these later versions. It has outer edge which centers intermediate plate. Its missing on '80-83 and this '84-86 version. Pictured part was also used in '84 ROW S.
Interesting.....I can't remember if my flywheel had a lip on it when I did the clutch last year. I don't think so but it's the only part I didn't take a pic of. Casting number is the same but I realize that is not a good determination.

I did have this new flywheel machined already. I may get under the car and take a peak.
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Old Jul 30, 2014 | 11:32 AM
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that one is worth some coin! i used that one and swapped the timing gear ring so i could use that stock crank sensor hole for my Mega Squirt set up...... keep it around, make some cash! LOL
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Old Jul 30, 2014 | 12:41 PM
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Originally Posted by Ducman82
that one is worth some coin! i used that one and swapped the timing gear ring so i could use that stock crank sensor hole for my Mega Squirt set up...... keep it around, make some cash! LOL
Funny, I self fund my 79 restoration by selling off the seemingly endless supply of spares in my basement! I will likely unload this one. The machining came out beautiful.
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Old Aug 31, 2014 | 11:34 PM
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Just to put a period at the end of the sentence......








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