From: PIETER.POSTHUMA@nlrtm.ponl.com
Date: 18 Nov 1998 11:22:46 +0000
Subject: [imps] Crankshaft bearings
I have just gotten hold of new Crankshaft bearings. But ... there are six halves of which two are wider than the other 4 and appear to be of a different sort of metal.
Since I donot have Imp bearings in the office can somebody tell me whether all six bearing halves should be the same or are the middle ones indeed wider ?
Regards
Pieter
Date: Wed, 18 Nov 1998 12:25:41 +0100
From: Bert Clewits
Subject: [imps] Re: Crankshaft bearings
Hi Pieter,
They should all be the same size as far as I know
Bert
Date: Wed, 18 Nov 1998 04:37:41 -0700
From: Dave Edge
Subject: [imps] Re: Crankshaft bearings
This is definitely not a 'set'. I have just fitted a set of oversized main bearings and they are all the same size(the ones I took out were too). The width is not absolutely critical, there will simply be proportionally more wear on the narrower ones, but if you paid good money....
Dave
From: PIETER.POSTHUMA@nlrtm.ponl.com
Date: 18 Nov 1998 13:27:59 +0000
Subject: [imps] Re: Crankshaft bearings
Bert,
Thanks, I was afraid that would be the case.
This means that somebody sold me an incomplete/wrong set. And because we are all having Imp's will let you know whether the company I bought it from delivers service or not.
Regards
Pieter
From: PIETER.POSTHUMA@nlrtm.ponl.com
Date: 18 Nov 1998 13:55:20 +0000
Subject: [imps] Re: Crankshaft bearings
Dave,
I think the width of the bearings are too wide to even fit between the crankshaft 'flanges'. Problem is that the Crankshaft is in my 'workshop' which is approx 40 minutes drive and I did not have the time to go there.
And I paid good money for them. Will let you know how this develops.
Pieter
From: Nickcleak@aol.com
Date: Wed, 18 Nov 1998 14:13:58 EST
Subject: [imps] Re: Crankshaft bearings
> can somebody tell me
> whether all six bearing halves should be the same or are the middle
> ones indeed wider ?
Yes the centre main bearing is indeed wider than the end ones .. contrary to other advice on here!
Nick ...
Date: Thu, 19 Nov 1998 10:13:10 -0800
From: Kenneth Barlow
Subject: [imps] Re: Crankshaft bearings
I agree, all the engines I have pulled apart have had wided center bearing.
The bearings have ranged from original to 40" and all have been wided for the central ones.
Kenneth
Date: Thu, 19 Nov 1998 08:26:12 +0800 (WST)
From: Paul Greville
Subject: [imps] Re: Crankshaft bearings
Hi Pieter,
You have guessed correctly. The middle bearings are the wider ones. Check the bearings carefully as I do not understand why the center pair are different.
Regards,
Paul Greville
Date: Thu, 19 Nov 1998 08:38:05 +0800 (WST)
From: Paul Greville
Subject: [imps] Re: Crankshaft bearings
Hi Nick,
I fully agree with you about the bearing size and have forwarded my opinion on the matter to Pieter. After having rebuilt, dismantled some 59 Imps I feel confident that I have seen what the bearing size is and I am sure that your extensive Imp and motor trade experience makes you more than qualified to advise on the matter.
Best wishes for a happy xmas.
Paul Greville
Date: Thu, 19 Nov 1998 09:46:24 +0800 (WST)
From: Paul Greville
Subject: [imps] Re: Crankshaft bearings (fwd)
Hi Pieter,
By different I was commenting on the two types of bearing material.
Regards,
Paul Greville
Date: Thu, 19 Nov 1998 08:23:44 +0100
From: Bert Clewits
Subject: [imps] Re: Crankshaft bearings
Hi Pieter, Nick and others,
OK maybe a wrong advise, so best thing is to go for is the Haynes or origional Rootes workshop manual to be sure to get the right thing and mount it right as well !
Regards
Bert
From: PIETER.POSTHUMA@nlrtm.ponl.com
Date: 19 Nov 1998 09:52:17 +0000
Subject: [imps] Re: Crankshaft bearings
Nick, Kenneth, Paul, Bert,
Thanks for the replies and advise. Paul I thought you where talking about the material.
So the bearings I have appear to be the correct ones the end bearings are smaller and the centre one with the thrust bearings on either side should indeed be wider.
Still leaves the fact that they are and from another manufacturer and from a different material.
The markings on the wider bearings are 20889T 00A G (the G in a square box) JE D (the D also in a square box). The surface of the bearings is of a darker material than the other ones, which have a very shiny surface. The other four which are of the same type/brand/make have the following markings A logo which looks like a VP, A5635 Grade A / 262269.00 Grade A. These four have a red marking on the side.
Would I be able to use them as a set on a crankshaft though or would it be better to obtain a matching set.
Thanks
Pieter