2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Flywheel surface ding'd - saveable?

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Old Mar 13, 2007 | 06:36 PM
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Flywheel surface ding'd - saveable?

Well.. I wouldn't even be asking this if I wasn't on a budget...

I had a REALLY subborn flywheel.. Took a 4lb minisledge and some anger to get it... and before I bought the sledge, I accidentally nick'd the friction surface with a normal hammer.. Made a little ding. I'll be taking the flywheel to get resurfaced, and I'm wondering how much they take off on average when they resurface a flywheel. How many thousanths? I'll measure the ding with a dial indicator to see how deep it is...

If I wasn't s'damn broke, I'd just pony up and get a used flywheel locally...
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Old Mar 13, 2007 | 06:48 PM
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well ussualy they just take off enough to bring the hot spots and low/high spots down to fresh metal, so ussualy less than .010 or even .005. Depending on the ding's depth id say its probably gonna be too deep to machine out
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Old Mar 13, 2007 | 06:51 PM
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I can barely feel it with my fingers... I'll go get measurements..
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Old Mar 13, 2007 | 06:57 PM
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Itm ight be ok then. If its any deeper than say 2 sheets of construction paper stacked together it might be too deep. This is all just a guess though, I could be totally wrong. But my experiance has been that not much can be taken away, especially from a used or high milage flywheel that might already be worn down a good bit or be badly uneven, leaving alot to be taken away to get a smooth surface
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Old Mar 13, 2007 | 07:08 PM
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Oh... its way less than that... I just measured it. I got .014 difference between the normal surface and the bottom of the ding. With fluctuations between .009 and .020... its hard to measure since my relative surface is also worn; but .014 was the most consistent reading I got.

So.. the thickness of say.... the front page of a magazine... slightly thicker than normal paper.. but not card stock by any means..

If it was wear marks on an iron.. I'd toss the iron... But, I hardly take my irons to get milled.
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Old Mar 13, 2007 | 07:37 PM
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Might be fine then. Im sure they can take that much down safely
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Old Mar 13, 2007 | 08:17 PM
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Sweet. Thanks. I guess we'll find out.
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Old Mar 13, 2007 | 11:01 PM
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What year and how much do you want to spend on a flywheel, I know its hard to be strapped for cash and I can help out.
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Old Mar 13, 2007 | 11:11 PM
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S5 NA... I'd like to spend very little. Also, you are in Ohio.. so shipping alone is probably close to as much as I'm willing to pay for a used flywheel.... But.. what did you have in mind. Shoot me a PM.
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Old Mar 14, 2007 | 10:19 AM
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It costs about $50 to have a flywheel resurfaced, so it's something that I do anytime it looks like it might need to be done. Clutch chatter really annoys me...If you have any amount of miles on the flywheel and clutch assembly, resurface it.
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Old Mar 14, 2007 | 11:06 AM
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That was never the question. I always get flywheels resurfaced when changing a clutch... The question was to whether resurfacing would eliminate the ding I accidentally made.
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Old Mar 14, 2007 | 12:16 PM
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https://www.rx7club.com/2nd-generation-specific-1986-1992-17/removing-flywheel-621118/

I always get laughed at when I tell people to use a gear puller to remove the flywheel. That probably would have been cheaper then getting the flywheel resurfaced.

B
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Old Mar 14, 2007 | 12:27 PM
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From: Newberg, Oregon
Originally Posted by Beep777
https://www.rx7club.com/showthread.php?t=621118

I always get laughed at when I tell people to use a gear puller to remove the flywheel. That probably would have been cheaper then getting the flywheel resurfaced.

B
Okay... What?!

First of all.. there's no substitute to resurfacing a flywheel.

Also... did you read the post before replying? I don't need help removing the flywheel.


My first attempt was a rubber mallet - as always.. Second attempt was a steel hammer on the correct surfaces (I slipped accidentally... which is the origin of this post).. My third attempt was a gear puller. I placed a mouse pad I folded into quarters over the e-shaft so I didn't damage it. The gear puller did not work. I broke the gear puller. It was kind of a cheap-o one.. but still... even with me hitting the flywheel with the rubber mallet and the gear puller pulling.. nothing...

Thats why I bought the 4lb minisledge. Worked on the first try.




I'll post my findings after I get this thing resurfaced.
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