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03-14-2020, 11:28 AM | #21 |
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Re: Flywheel Housing Alignment
Another reason you can't shim between the 4 mounting holes is that the rear cam bearing seal relies on those two surfaces being in contact. Shims on the cam side for sure would compromise that seal. Then you will be screaming at your engine builder that the rear main is leaking when its the cam bearing.
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03-14-2020, 12:31 PM | #22 |
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Re: Flywheel Housing Alignment
Dan,
Since most block to clutch housing gaskets are made today from thick cardboard in stead of paper, I'm not expecting a problem. I'll get back to you. |
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03-14-2020, 12:55 PM | #23 |
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Re: Flywheel Housing Alignment
But you can gain some adjustment usings horseshoe shims and gasket ..one or the other,or none..I have none on mine,no horseshoes,no gasket,just sealant..
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03-14-2020, 01:28 PM | #24 |
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Re: Flywheel Housing Alignment
Herm, your most patient and very helpful. I appreciate the generous giving of your time to clarify my many questions. I was having a problem with both operations with the same two adjustments. The concept of essentially training the material to come into alignment made the light come on in my head.
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03-14-2020, 01:28 PM | #25 |
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Re: Flywheel Housing Alignment
Herm,
Who gets the job of humping that 65 pound flywheel on & off the crank flange during the shimming process ? If from your experience (I don't doubt) that most/all crank flange to flywheel surfaces are no longer factory 'true', why not a fly cut to both ? (And avoid the hernia surgery.) jb |
03-14-2020, 03:37 PM | #26 |
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Re: Flywheel Housing Alignment
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03-14-2020, 11:31 PM | #27 | |
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Re: Flywheel Housing Alignment
Quote:
Write down what the thickness of the finished shim pack are, right, and left, just in case, a pack would fall. Herm. |
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03-14-2020, 11:41 PM | #28 |
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Re: Flywheel Housing Alignment
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03-15-2020, 12:31 AM | #29 | |
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Re: Flywheel Housing Alignment
Quote:
The flywheel, does not have a part to play in setting the flywheel housing. They are set on once, and bolted down, and checked for off center, and then for wobble. The one in pictures shows 0, in 1 full circle. The wobble shows, .001 thousandths, meaning, correction would be .000-50, 1/2 thousandths. If you grind a crank square, and on center line, and align bore square, set the flywheel housing square, grind the flywheel square, you can eliminate a lot of engine problems. Herm. |
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03-15-2020, 12:43 AM | #30 |
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Re: Flywheel Housing Alignment
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03-15-2020, 02:21 AM | #31 |
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Re: Flywheel Housing Alignment
Correction, One should be 12.
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03-15-2020, 07:29 AM | #32 |
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Re: Flywheel Housing Alignment
Herm,
Like others, thanks for sharing. I'm always in your audience reading your posts. I've gained a much better understanding. I have a very early brass car collector that allows me to use their shop. After watching me fuss with some A parts, they complimented my efforts by asking if I knew what I had when finished ? "It still just a Ford ." |
03-15-2020, 08:40 AM | #33 |
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Re: Flywheel Housing Alignment
I would also like to ask Herm why brass shims, I have steel shims, isn't that OK to use. Also someone mentioned doing this in the car. Is that possible? Jack
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03-15-2020, 09:36 AM | #34 |
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Re: Flywheel Housing Alignment
It is common to do this repair on heavy trucks in frame,just be careful when turning the crank you don't 'force' the thrust clearance.
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03-15-2020, 05:35 PM | #35 | |
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Re: Flywheel Housing Alignment
Quote:
In the Car? I won't say anything about why it can't be done perfect, and I think most of you know why. I will say, if it had to be done that why, I couldn't do it at all, but I am not them. Herm. |
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03-15-2020, 06:36 PM | #36 | |
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Re: Flywheel Housing Alignment
Quote:
9, 12, and 3 getting squared is good, but the bottom has a tendency to be off the worst. 0 to maybe 16? When the bell housing tightens up, yes it will pull together, at the bottom, but when that happens, you are stressing the other 3 points. You now have 4 points, out of alignment. The flywheel housing adjusting is just as important, as any job on Building an engine. If you torque a head wrong, the metal moves, and you have a leaker. If you torque it right, it doesn't leak. If you don't square a flywheel housing, the pilot bearing, the ball bearing in the front of the transmission case. I have seen cases destroyed from alignment problems, pressure on your rear main Babbitt, and can cause rough clutch operation. Of course, there other things that can cost you your money, but which one would you chose, one you knew about, and didn't think it was that important, or one you knew nothing about yet. Thank's, Daren, Herm. |
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03-16-2020, 10:49 AM | #37 | |
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Re: Flywheel Housing Alignment
Quote:
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03-16-2020, 11:36 AM | #38 |
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Re: Flywheel Housing Alignment
I had to shim my crank flange because the original rebuilder did not grind it square. It was out .0020". I used a half-circle shim captured by the flywheel screws to fix the problem. It can't get out anyway. It still took quite a while to get the flywheel housing squared up, but I got there in the end.
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03-16-2020, 07:37 PM | #39 |
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Re: Flywheel Housing Alignment
Herm I follow your thinking. Just how far out would you have to be to have the problems you are talking about. If you get 9, 12, and 3 within one, two thousands you are going to have to leave it up to the clutch housing to finish the rest. You would be chasing your tail. I find it hard to believe Henry went through this procedure on any of his engines...Time is money.
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03-16-2020, 08:01 PM | #40 |
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Re: Flywheel Housing Alignment
Henry was working with new parts !
I've wondered about checking in the car, and a light bulb justed turned on !! Thanks Herm ........................the engine is mounted by the housing .................. Duh
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