Unless you can machine that crack out, I wouldn't trust it.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
The crack doesn't concern me as much as the possibility that there will be a bunch of hard spots from overheating of the clutch contact surface If you decide you must use that one, drill a 1/16" hole all the way through the flywheel at the end of the crack to keep it from spreading any further. Have a machine shop grind the friction surface smooth, and discard the flywheel if hardened areas show up. A hard spot is football-shaped, and what you're seeing on the surface is just the tip of the iceberg. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Ditto to Davidbraley. Looks like a good paper weight. There are plenty of good ones out there if ya look around. Post a wanted ad here. I bet there are quite a few available.
What concerns me more is what appears to be a crack shown in the area were the flywheel bolts to the crankshaft.
Yep, I missed that. Weld a piece of pipe to it and use it to support a bench grinder! Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Didn't see that crack near the hub either. Boat anchor.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
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Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
I think my question fits in with this thread so here goes. I’ve chased clutch chatter from my Apache for several years. I’ve tried a resurfaced flywheel and new clutch (temp fix -gone but came back), 2 piece rear main seal, new engine mounts all the way around. Several 3rd gear starts to get it hot (short term improvement).
So this winter I’m throwing the book at it. Engine out, new rope seal, new clutch and PP, and more but that’s off topic for now.
I’d go new flywheel but I can’t find a source of new production...anywhere. Plan B is then a used one from a ‘58 truck engine. It should be on it’s way soon to me so I’ll see how it looks in a week or so.
These pics are of my existing flywheel, my main questions are: are these circled spots the hard spots HRL refers to? And if I had this flywheel resurfaced the chatter would return? (as it did before). If this used one coming in has similar spots - am I stuck with clutch chatter forever? Aside from going automatic- banish the thought.
'59 Apache ‘21 Beta 390RS ‘18 BMW R1200RT '12 Ford Flex '13 Aprilia Tuono ‘11 Ducati Hypermotard Salisbury, MD
Moonlight Have used flywheels that looked a lot worse than yours,clutch chatter can be elusive. Then you get around some piece of crap smooth as silk,so go figure !!
Yes, those are hard spots, caused by a slippy clutch overheating the friction surfaces. I've eliminated a lot of clutch chatter problems by replacing motor mounts. That one doesn't look too bad, but as the rest of the surface wears, the hard spots become high spots. A temporary fix can be had by refacing the flywheel with a surface grinder instead of a carbide cutting bit to get the hardened areas level with the rest of the friction face. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Well, the used flywheel came in and it’s quite the sight. It looks like it sat in dirt for 27 years. I’m having an experienced machinist friend take a stab at facing it. Hopefully I’ll post an “after” picture of a useable flywheel. We’ll see.
Last edited by Moonlight; 02/13/20226:30 PM.
'59 Apache ‘21 Beta 390RS ‘18 BMW R1200RT '12 Ford Flex '13 Aprilia Tuono ‘11 Ducati Hypermotard Salisbury, MD
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
The work on the flywheel turned out better than I expected. There was 0.030” taken off to clean it up, very reasonable. There are a few pits in it that didn’t come out but I don’t think they will present a problem long term. I don’t see any cracks or hard spots, I was worried that the portion where the ring gear was most decayed might have damaged the wheel side, but there is just some spotty pitting. The shading in the picture is from the room lighting, the friction surface has an even consistent sheen. I’m optimistic this flywheel will be part of the solution to my chatter. Thanks to those who offered help if this didn’t work out.
'59 Apache ‘21 Beta 390RS ‘18 BMW R1200RT '12 Ford Flex '13 Aprilia Tuono ‘11 Ducati Hypermotard Salisbury, MD
Given the condition it started out as it cleaned up really well. Just wondering if once the pitting fills with clutch material if it will cause hot spots?
~ Craig 1958 Viking 4400 "The Book of Thor" Read the story in the DITY 1960 Chevrolet C10 "A Family Heirloom" Follow the story in the DITY Gallery '59 Apache 31, 327 V8 (0.030 over), Muncie M20 4 Speed, GM 10 Bolt Rear... long term project (30 years and counting)
Come Bleed or Blister, something has got to give!!! | Living life in the SLOW lane
I have found that the larger the disc, the more chance of clutch chatter. I would recommend still using a 10”. Disc with that setup. I always tried to use the 9” clutch in all my customers vehicles to save them and me a lot of problems.
