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Re: [GMCnet] Reviving the Cad 500 [message #165354 is a reply to message #165075]

Wed, 04 April 2012 16:34

GMC_LES

Messages: 569
Registered: October 2009
Location: Montreal

Karma:

Senior Member

Ken,
I just had a discussion with a friend of mine who used to do a lot of engine work. He mentioned having a similar problem on small block vette years ago. After redoing the engine several times due to thrust bearing failure, they replaced the vibration damper and the problem disappeared. They never were sure as to the cause of the problem, just happy that the engine finally made it well past the warranty period with no signs of trouble.

I don't see how this could be the source of your problem, but I guess it could be possible. Compared to having to replace a crank and bearings, a new damper is a cheap Investment.

Les Burt
Montreal

On 2012-04-02, at 7:51 PM, Ken Henderson <hend4800@bellsouth.net> wrote:

> Les,
>
> The only thing unique about the front of my engine is the pair of
> serpentine belts. No one I've talked to, including myself, thinks there's
> any possibility of their causing axial loads on the crank. There were NO
> signs of radial damage to the front bearing as I'd expect if there were a
> problem. There's no reason the serpentine belts should cause more problem
> than the V-belts. Also, with the excess end play, I can literally move the
> crank fore and aft by hand, even with the belts in place.
>
> As for oil starvation, that's unlikely: The #3 journal (where the thrust
> is taken on the Cad) showed no different wear than any of the others --
> just that minor amount caused by the circulating debris.
>
> Today I talked to Marty at Maximum Torque Specialists. He thinks the
> torque converter is the cause of my problems; he claims the housing CAN
> expand enough to take up my 0.125" clearance. I'm still skeptical, but
> with nothing else to blame, I'm going to replace the TC with the best one I
> can find -- any suggestions? I'll also have the builder of this one tear
> it down to see if they can find anything wrong with it.
>
> After I drop the engine tomorrow, I'll be looking for any signs of
> interference that I may have missed before. The general assumption, in the
> transmission industry at least, seems to be that an expanded TC would
> immediately cause massive damage to the transmission -- I saw NO signs of
> any damage when I had the transmission partially disassembled to replace
> the input bushing. Maybe the TH-425 is especially rugged in that area
> because of the chain drive?
>
> Ideas welcomed.
>
> Ken H.
>
>
>
> On Mon, Apr 2, 2012 at 7:28 PM, Les Burt wrote:
>
>> Ken,
>> Is there any possibility that something running off the front of the crank
>> is pulling it forward with enough force to load the thrust bearing?
>>
>> Another very long shot might be a defect in the block oiling passages that
>> is causing a restricted oil flow to the main journal with the thrust faces.
>> Increasing oil flow to the thrust face by chamfering the bearing shell
>> might actually have a negative effect if the oil flow was already on the
>> low side. You'll find out for sure on this tear down as the bearing shell
>> surfaces for the main with the thrust faces and the rods fed off that main
>> should show signs of oil starvation if this is the case. I doubt this would
>> be your situation though.
>>
>>
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Les Burt Montreal 1975 Eleganza 26ft A work in Progress

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[Message index]

		[GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 12 March 2012 21:11
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Mon, 12 March 2012 21:51
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 13 March 2012 07:44
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Mon, 12 March 2012 22:05
		Re: [GMCnet] Reviving the Cad 500 By: sgltrac on Mon, 12 March 2012 23:42
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Mon, 12 March 2012 23:51
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Tue, 13 March 2012 06:55
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 07:08
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 13 March 2012 08:02
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 13 March 2012 09:23
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 12:05
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 13 March 2012 12:58
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 18:15
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 13 March 2012 18:58
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 13 March 2012 19:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 19:34
		Re: [GMCnet] Reviving the Cad 500 By: jimk on Wed, 14 March 2012 01:23
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 14 March 2012 07:28
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 14 March 2012 21:29
		Re: [GMCnet] Reviving the Cad 500 By: jimk on Thu, 15 March 2012 01:22
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Thu, 15 March 2012 08:43
		Re: [GMCnet] Reviving the Cad 500 By: k2gkk on Thu, 15 March 2012 11:53
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 15 March 2012 21:15
		Re: [GMCnet] Reviving the Cad 500 By: Steve L. Clevenger on Fri, 16 March 2012 00:15
		Re: [GMCnet] Reviving the Cad 500 By: jimk on Fri, 16 March 2012 01:30
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Fri, 16 March 2012 10:09
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Fri, 16 March 2012 01:37
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Thu, 15 March 2012 06:04
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Fri, 16 March 2012 07:54
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 16 March 2012 08:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Burton on Sat, 17 March 2012 18:46
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Sat, 17 March 2012 19:24
		Re: [GMCnet] Reviving the Cad 500 By: Ken Burton on Sat, 17 March 2012 19:31
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Sun, 18 March 2012 08:55
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 20:31
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Sun, 18 March 2012 20:51
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Sun, 18 March 2012 21:16
		Re: [GMCnet] Reviving the Cad 500 By: midlf on Sun, 18 March 2012 22:09
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Sun, 18 March 2012 22:04
		Re: [GMCnet] Reviving the Cad 500 By: James Hupy on Sun, 18 March 2012 22:27
		Re: [GMCnet] Reviving the Cad 500 By: Marsh Wilkes on Sun, 18 March 2012 22:18
		Re: [GMCnet] Reviving the Cad 500 By: Ken Burton on Sun, 18 March 2012 23:35
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Mon, 19 March 2012 01:05
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Mon, 19 March 2012 06:54
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Mon, 19 March 2012 06:50
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Mon, 19 March 2012 07:05
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Mon, 19 March 2012 07:22
		Re: [GMCnet] Reviving the Cad 500 By: James Hupy on Mon, 19 March 2012 10:01
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Tue, 20 March 2012 07:16
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 20 March 2012 08:54
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Tue, 20 March 2012 11:38
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 20 March 2012 12:29
		Re: [GMCnet] Reviving the Cad 500 By: GMC Cruse on Sat, 24 March 2012 11:09
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Sat, 24 March 2012 15:32
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 21:09
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Sat, 24 March 2012 22:45
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Sun, 25 March 2012 07:00
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 20:19
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Mon, 19 March 2012 08:02
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Mon, 19 March 2012 09:56
		Re: [GMCnet] Reviving the Cad 500 By: Carl S. on Mon, 19 March 2012 13:08
		Re: [GMCnet] Reviving the Cad 500 By: George Beckman on Sat, 24 March 2012 18:05
		Re: [GMCnet] Reviving the Cad 500 By: Dolph Santorine on Sat, 24 March 2012 18:25
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 21:21
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 21:17
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Mon, 26 March 2012 20:55
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Tue, 27 March 2012 07:37
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 27 March 2012 14:12
		Re: [GMCnet] Reviving the Cad 500 By: Mr ERFisher on Tue, 27 March 2012 14:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 27 March 2012 14:21
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 27 March 2012 19:34
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 27 March 2012 21:20
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Wed, 28 March 2012 07:48
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 29 March 2012 18:05
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Wed, 28 March 2012 08:00
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 29 March 2012 18:12
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 31 March 2012 18:06
		Re: [GMCnet] Reviving the Cad 500 By: shawnee on Sat, 31 March 2012 20:11
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 31 March 2012 20:19
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Mon, 02 April 2012 18:28
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Mon, 02 April 2012 18:43
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 02 April 2012 18:54
		Re: [GMCnet] Reviving the Cad 500 By: roy1 on Tue, 03 April 2012 11:15
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 02 April 2012 18:51
		Re: [GMCnet] Reviving the Cad 500 By: Carleton Douglas[1] on Tue, 03 April 2012 08:11
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 03 April 2012 19:18
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 03 April 2012 16:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 03 April 2012 19:36
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Wed, 04 April 2012 16:34
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 17 March 2012 19:40
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Sat, 17 March 2012 20:15
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 07:49
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Sat, 17 March 2012 20:25
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 07:44
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Sun, 18 March 2012 03:44
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 07:42
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 16 March 2012 20:39
		Re: [GMCnet] Reviving the Cad 500 By: WD0AFQ on Fri, 16 March 2012 22:33
		Re: [GMCnet] Reviving the Cad 500 By: George Beckman on Sat, 17 March 2012 00:41
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 17 March 2012 03:32
		Re: [GMCnet] Reviving the Cad 500 By: James Hupy on Sat, 17 March 2012 10:43
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 17 March 2012 18:25
		Re: [GMCnet] Reviving the Cad 500 By: Ernest Dankert on Sat, 17 March 2012 22:48
		Re: [GMCnet] Reviving the Cad 500 By: roy1 on Mon, 19 March 2012 11:12
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Mon, 19 March 2012 11:30
		Re: [GMCnet] Reviving the Cad 500 By: Ed Jarmul on Mon, 19 March 2012 11:45
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 19 March 2012 14:39
		Re: [GMCnet] Reviving the Cad 500 By: jaholland on Mon, 19 March 2012 18:28
		Re: [GMCnet] Reviving the Cad 500 By: Adrien G. on Mon, 19 March 2012 23:17
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 20 March 2012 08:09
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 28 March 2012 09:46
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 28 March 2012 13:51
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Wed, 28 March 2012 19:58
		Re: [GMCnet] Reviving the Cad 500 By: klassic kampers on Wed, 28 March 2012 20:19
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 28 March 2012 22:10
		Re: [GMCnet] Reviving the Cad 500 By: rssbob on Wed, 28 March 2012 22:14
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 28 March 2012 22:37
		Re: [GMCnet] Reviving the Cad 500 By: Steve L. Clevenger on Mon, 19 March 2012 23:36
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Wed, 28 March 2012 01:48
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 29 March 2012 18:03
		Re: [GMCnet] Reviving the Cad 500 By: kingd on Sat, 31 March 2012 20:08
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Mon, 02 April 2012 20:21
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 02 April 2012 20:42
		Re: [GMCnet] Reviving the Cad 500 By: JohnL455 on Tue, 03 April 2012 19:17
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Tue, 03 April 2012 22:31
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Tue, 03 April 2012 23:36
		Re: [GMCnet] Reviving the Cad 500 By: JohnL455 on Wed, 04 April 2012 09:24
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 04 April 2012 10:03
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Wed, 04 April 2012 15:38
		Re: [GMCnet] Reviving the Cad 500 By: k2gkk on Wed, 04 April 2012 16:00
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 04 April 2012 17:20
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Wed, 04 April 2012 19:06
		Re: [GMCnet] Reviving the Cad 500 By: JohnL455 on Wed, 04 April 2012 17:28
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Thu, 05 April 2012 09:16
		Re: [GMCnet] Reviving the Cad 500 By: g.winger on Wed, 04 April 2012 19:42
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Wed, 04 April 2012 20:33
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 04 April 2012 21:20
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Thu, 05 April 2012 05:26
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:21
		Re: [GMCnet] Reviving the Cad 500 By: Dan W on Thu, 05 April 2012 09:08
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Thu, 05 April 2012 12:51
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Fri, 06 April 2012 06:52
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Thu, 05 April 2012 07:09
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:16
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Fri, 06 April 2012 06:47
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Fri, 06 April 2012 07:45
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 06 April 2012 07:56
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Thu, 05 April 2012 03:47
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:10
		Re: [GMCnet] Reviving the Cad 500 By: g.winger on Thu, 05 April 2012 05:19
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Thu, 05 April 2012 07:45
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:27
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Thu, 05 April 2012 21:42
		Re: [GMCnet] Reviving the Cad 500 By: John Heslinga on Thu, 05 April 2012 13:19
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 22:16
		Re: [GMCnet] Reviving the Cad 500 By: Marsh Wilkes on Fri, 06 April 2012 08:06
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 06 April 2012 08:19
		Re: [GMCnet] Reviving the Cad 500 By: Marsh Wilkes on Fri, 06 April 2012 09:05

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