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Stuck B

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Dennis McGill

01-02-2001 10:36:46




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I've had a stuck B in my shed for 6 years. Last week I started to work on it. Removed head, front axle and pan. Today I got the middle two pistons moving. ( I disconnected them from the crank) I tapped on them with a mull and a chunk of 2x4 trimmed to fit the cylender hole. Question, the sleves look good can I just put the whole thing back togeather and see if it runs or do I need to do an overhaul?

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T.J.

01-02-2001 12:19:09




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 Re: Stuck B in reply to Dennis McGill, 01-02-2001 10:36:46  
Its a real crap shoot I would at least pull the pistons out and make sure you dont have the rings rusted fast but you stand a real good chance of breaking them trying to pull them off.The other thing is that the main seals are probably not going to last very long if they have been dry for 6 years.Good luck T.J.



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Dick L

01-02-2001 12:49:44




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 Re: Re: Stuck B in reply to T.J., 01-02-2001 12:19:09  
You got that right, the cork seals will crack up and start leaking,if they were not before.



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Dick L

01-02-2001 11:32:17




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 Re: Stuck B in reply to Dennis McGill, 01-02-2001 10:36:46  
If it were me the least I would do is hone the walls and clean the ring grooves and put in new rings. Make sure you use plastagauge and set the rod bearings at .002 I personaly, while having an engine apart, like do a complete overhaul. That does cost money, and if money is short you probably can get a lot of use out of it just cleaning every thing up and sticking it back togather.



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Tom

01-02-2001 14:56:20




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 Re: Re: Stuck B in reply to Dick L, 01-02-2001 11:32:17  
Make sure if you have to tighten up the bearings by removing shims that you don't get too much bearing "crush". You can only tighten up the clearences a couple of thousands by this method without carefully fileing the bearing inserts. When carefully installed in its clean seat each insert should protrude above the surface on each side by one and a half to two thousands (I think it is, can check) any more and you need to file them.

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Dick L

01-02-2001 18:24:11




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 Re: Re: Re: Stuck B in reply to Tom, 01-02-2001 14:56:20  
Yup, thats what you got to do. If you don't file them the bearing will pinch in on the crankshaft and even though you get a reading of .002 with the plastaguage you will not be able to turn the crankshaft with the rod caps tight. The only other thing is if you have to remove more than .002 shims you also need to check the crank for being out of round



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Tyler(WA)

01-02-2001 12:17:07




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 Re: Re: Stuck B in reply to Dick L, 01-02-2001 11:32:17  
How do you "set rod bearings?" I've always just put in new ones and torqued to spec. It sounds like there's something to these older engines that I'm not aware of. Can you educate me? I'm pretty dense at times.... just ask my wife.



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Dick L

01-02-2001 12:37:03




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 Re: Re: Re: Stuck B in reply to Tyler(WA), 01-02-2001 12:17:07  
You use plastagauge and shims.I have a drawing that might help. I am not sure wheather I can get if for you from here at work or I have to do it at home. You will see something here sooner or later.



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Sooner

01-02-2001 12:42:12




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 Re: Re: Re: Re: Stuck B in reply to Dick L, 01-02-2001 12:37:03  
third party image

This should do it



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Tyler(WA)

01-02-2001 12:47:41




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 Re: Re: Re: Re: Re: Stuck B in reply to Sooner, 01-02-2001 12:42:12  
Looks straight forward enough. I see no keepers for the wrist pins. Are they pressed on like the Dodge 440's? Do you have to heat the rod and freeze the pin to press fit the rod to the pin?



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Dick L

01-02-2001 12:54:35




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 Re: Re: Re: Re: Re: Re: Stuck B in reply to Tyler(WA), 01-02-2001 12:47:41  
No, if you look at the top of the rod you will see the bolt that clamps the rod fast to the rist pin. With that bolt loose the pin will slide through with your fingers



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Tyler(WA) Oh, THAT bolt...

01-02-2001 13:02:38




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 Re: Re: Re: Re: Re: Re: Re: Stuck B in reply to Dick L, 01-02-2001 12:54:35  
Duhhhhh... So much for my observation skills. Rather obvious isn't it?

Where do you get extra shims? I figgure I'll need some with new bearings.



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Dick L

01-02-2001 13:57:53




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 Re: Re: Re: Re: Re: Re: Re: Re: Stuck B in reply to Tyler(WA) Oh, THAT bolt..., 01-02-2001 13:02:38  
I called all over trying to find then and was told that you couldn't get them any more so I bought a roll of both .001 and .005 brass shim stock and set and cut mine while watchin TV. However Sandylake came on this board and said they carry them. Seems like they could have known I need them and told me afor I went to all that work. You know how these people keep there mind readin a secret.



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