flathead flywheel thickness ?
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Senior User
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From: Campbellville, ON
flathead flywheel thickness ?
My block just went to the hot tank (milestone), so I am going through the rest of the parts.
I have 3 flywheels, but dont really know which one to use. They all look ok, but I wanted to use the one with the most 'meat'.
The service manual wasnt much help.
Would anyone know a spec. measurement or any way to tell other than a visual?
Thanks
Chris
I have 3 flywheels, but dont really know which one to use. They all look ok, but I wanted to use the one with the most 'meat'.
The service manual wasnt much help.
Would anyone know a spec. measurement or any way to tell other than a visual?
Thanks
Chris
Junior User
Joined: Dec 2010
Posts: 64
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From: London Ontario Canada "EH
flywheel spec's
Chris , i think if you get ahold of an "older" automotive machine shop/machinist , they have/had spec books for stuff like that ,
fellow i use here in London is Greg Churcher , Horton Machine , 519 642 4133,, lv a message if he's not there and he'l call you back , mention my name for a good seat !!!.......... Jim Prowse,,,,,,
fellow i use here in London is Greg Churcher , Horton Machine , 519 642 4133,, lv a message if he's not there and he'l call you back , mention my name for a good seat !!!.......... Jim Prowse,,,,,,
Fleet Owner
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From: NM
Please post the spec if the shop has one. My flywheel has been cut a couple of times thru the years, and at some point you're supposed to shim between the crank and the flywheel, but I don't know what the break point is.
It has been stated on the Flathead Forum many times that it is critically important to re-countersink the PP bolt holes, because the bolts have a shoulder that sits inside the holes. If you cut enough and don't deepen the countersink, you can start a crack or be unable to completely tighten the PP. Bad juju either way.
It has been stated on the Flathead Forum many times that it is critically important to re-countersink the PP bolt holes, because the bolts have a shoulder that sits inside the holes. If you cut enough and don't deepen the countersink, you can start a crack or be unable to completely tighten the PP. Bad juju either way.
Hotshot
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From: Burbank, WA
I suppose the next question would be how far can you shim the flywheel back before you run into starter engagement and/or jamming issues? Shimming moves the ring gear back from spec.
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From: Campbellville, ON
All 3 of the engines I dissasembeled had the shims.
One flywheel still had a 'raised' portion where the clutch disc engages. My thinking is it has never been resurfaced.
Will update..................
One flywheel still had a 'raised' portion where the clutch disc engages. My thinking is it has never been resurfaced.
Will update..................
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Fleet Owner
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From: NM
Chris, that's a new one on me. I'm certain factory was dead flat. Got a picture? See the pic below; one on the left is a 59-series flywheel, WILL NOT work on a 8BA (for other reasons, on the backside). Is that the lip you were talking about?
Wayne, the typical surfacing removes .010" - .015" so the shims are not that thick. I'm thinking .030", but there's nothing showing in the parts CD.
Wayne, the typical surfacing removes .010" - .015" so the shims are not that thick. I'm thinking .030", but there's nothing showing in the parts CD.
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From: Campbellville, ON
Actually I meant the surface the clutch disc contacts. It is raised ever so slightly.
I'll do my best to get some pics tomorrow
update - Jan 7th -
No spec as of yet, but here are some pics of what I have (arrow showing slight raised area)
My bad on the shims. I was mixed up with the plate that goes between the flywheel and the bolts.
.JPG)
.JPG)
I'll do my best to get some pics tomorrow
update - Jan 7th -
No spec as of yet, but here are some pics of what I have (arrow showing slight raised area)
My bad on the shims. I was mixed up with the plate that goes between the flywheel and the bolts.
Last edited by chriscris; Jan 7, 2013 at 06:30 PM. Reason: update
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