Cam bearing bore shot in BB, how to fix?
#3190367
11/12/23 05:17 AM
11/12/23 05:17 AM
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jyrki
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Hi! Had a cam bearing failure in my Indy aluminum block. It went so bad that the block actually have melted a little in the #3 and 4 cam bearing bores, so just can't install new bearings. Others are ok. You can't get it welded either, no room for that.
So, does someone make needle bearing cams (and bearings) for a bigblock? It could be one solution to drill the cam tunnel bigger for roller bearings.
Any other ideas?
Plynouth VIP '67 TT IC EFI
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Re: Cam bearing bore shot in BB, how to fix?
[Re: Stanton]
#3190413
11/12/23 11:47 AM
11/12/23 11:47 AM
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Joined: Mar 2003
Posts: 9,108 Rogue River, OR
Jeremiah
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Your choices are 55mm roller or 60mm babbit. I like babbit however there can be some caveats. Is the block standard cam height or +.250? I would give Indy a call in this one.
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Re: Cam bearing bore shot in BB, how to fix?
[Re: John Brown]
#3190437
11/12/23 12:58 PM
11/12/23 12:58 PM
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Joined: Jan 2003
Posts: 4,291 Morrow, OH
markz528
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If it were mine, I would probably attempt to sleeve it. I assume there is enough meat there for a sleeve - I would leave a slight shoulder for the sleeve to rest against. I would do it on a horizontal boring mill. Trickiest part is the setup.
Tony Bischoff (BES) is my engine builder. I would trust whatever he says. Why don't you send him an email and ask?
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Cam bearing bore shot in BB, how to fix?
[Re: AndyF]
#3190449
11/12/23 02:35 PM
11/12/23 02:35 PM
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Joined: Aug 2003
Posts: 43,335 Bend,OR USA
Cab_Burge
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I Win
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Last edited by Cab_Burge; 11/12/23 02:38 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Cam bearing bore shot in BB, how to fix?
[Re: Cab_Burge]
#3190481
11/12/23 04:49 PM
11/12/23 04:49 PM
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Joined: Jan 2003
Posts: 7,498 Minnesota
Hemi_Joel
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Can you find anyone with a portable line bore machine like this? 60mm cam bearings and cam cores are available. Or use it to overbore for sleeves.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Cam bearing bore shot in BB, how to fix?
[Re: Hemi_Joel]
#3190490
11/12/23 05:25 PM
11/12/23 05:25 PM
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Joined: Jan 2003
Posts: 6,150 Melbourne , Australia
LA360
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The bore for a 60mm roller bearing is going to be 68mm from memory. A babbit bearing bore will be around 63mm. Obviously a 55mm babbit bore will be smaller, but I don't believe Cam cores to be as plentiful. If you have to replace the camshaft as well, this might be the best option??
Alternatively, you can sleeve the number 3, 4 and 5 bores to facilitate the repair. Maybe pin them with some aluminium rod to minimise the possibility of the sleeves moving.
Alan Jones
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Re: Cam bearing bore shot in BB, how to fix?
[Re: Cab_Burge]
#3190545
11/12/23 10:57 PM
11/12/23 10:57 PM
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Joined: Jan 2003
Posts: 4,291 Morrow, OH
markz528
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Don't forget he is in Finland Finland????? LOL! I know - he was kind enough to give me a beer when I visited him........ Got nothing but the highest respect for what they do.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Cam bearing bore shot in BB, how to fix?
[Re: Cab_Burge]
#3190564
11/13/23 05:04 AM
11/13/23 05:04 AM
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Joined: Jan 2003
Posts: 6,150 Melbourne , Australia
LA360
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Melbourne , Australia
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Can you find anyone with a portable line bore machine like this? 60mm cam bearings and cam cores are available. Or use it to overbore for sleeves. I'm wondering how many people on here recognize what era, years and brand block that pictures is of ![grin grin](/ubbthreads/images/graemlins/custom/grin.gif) Hint it isn't recent and it is not a Mopar brand block A favourite of a lot of early Hot Rodders!
Alan Jones
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Re: Cam bearing bore shot in BB, how to fix?
[Re: LA360]
#3190573
11/13/23 09:13 AM
11/13/23 09:13 AM
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Posts: 2,935 Finalnd, Perkele
jyrki
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Yes, the cam is shot too, so have to get new one or two anyway. So,only the available cam core is the limit for the cam bearings that will be used.
Plynouth VIP '67 TT IC EFI
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Re: Cam bearing bore shot in BB, how to fix?
[Re: jyrki]
#3190608
11/13/23 01:26 PM
11/13/23 01:26 PM
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Joined: Dec 2006
Posts: 2,124 Byron, NY
W.I.N. Racing
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My KB blocks didn't have cam bearings (other than the bores that had been repaired) , ran on the machined block material. An option may be to open the bores and have straight aluminum bushings pressed in and re line hone. Tap the feed hole(s) in the block, then drill out a dog point set screw as an anti rotation pin. ![twocents twocents](/ubbthreads/images/graemlins/custom/twocents.gif)
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Cam bearing bore shot in BB, how to fix?
[Re: moparx]
#3190849
11/14/23 02:42 PM
11/14/23 02:42 PM
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Joined: Jan 2003
Posts: 7,498 Minnesota
Hemi_Joel
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Close. It's a Lincoln 337 flathead. Basically a big block version of the Ford flathead. ![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif)
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Cam bearing bore shot in BB, how to fix?
[Re: moparx]
#3190895
11/14/23 05:40 PM
11/14/23 05:40 PM
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Joined: Aug 2003
Posts: 43,335 Bend,OR USA
Cab_Burge
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I Win
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Can you find anyone with a portable line bore machine like this? 60mm cam bearings and cam cores are available. Or use it to overbore for sleeves. I'm wondering how many people on here recognize what era, years and brand block that pictures is of ![grin grin](/ubbthreads/images/graemlins/custom/grin.gif) Hint it isn't recent and it is not a Mopar brand block A favourite of a lot of early Hot Rodders! ford flathead, 8BA block maybe ? 8 AB maybe ![work work](/ubbthreads/images/graemlins/custom/work.gif) I can't tell without seeing the top of the motor to see if it had a cam driven distributors on the front of the motor or the later top mounted distributor and I don't know how to tell the differences visibly between the Ford and Mercury blocks, let alone the bigger Lincoln blocks ![shruggy shruggy](/ubbthreads/images/graemlins/custom/shruggy.gif) I started getting interested in cars in the later 1950s, I especially liked the 1958 Chevy Impalas, still do ![boogie boogie](/ubbthreads/images/graemlins/custom/boogie.gif)
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Cam bearing bore shot in BB, how to fix?
[Re: LA360]
#3191599
11/17/23 01:21 PM
11/17/23 01:21 PM
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jyrki
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Seems that the camcores for BB rollerbearings is next to impossible to find. So far one offer for 54mm bearings, 1500$.
Plynouth VIP '67 TT IC EFI
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Re: Cam bearing bore shot in BB, how to fix?
[Re: jyrki]
#3191626
11/17/23 03:35 PM
11/17/23 03:35 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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The direction I’d be leaning would be to bore & sleeve the two bad cam bores back to the original sizes.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Cam bearing bore shot in BB, how to fix?
[Re: fast68plymouth]
#3191653
11/17/23 06:09 PM
11/17/23 06:09 PM
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Joined: Jan 2012
Posts: 2,690 Stuttgart, Arkansas
rickseeman
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I don't think you want roller bearings, you have enough troubles already. Look at the bright side. After you go thru all this trouble to go to 54mm babbit (or what ever the first popular size is) at least you can tell everyone you have a 54mm cam. That has to be worth something.
2011 Drag Pak Challenger
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Re: Cam bearing bore shot in BB, how to fix?
[Re: rickseeman]
#3191716
11/18/23 05:39 AM
11/18/23 05:39 AM
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jyrki
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Ok,have zero experience with the roller bearing cams. I believe the sleeving sounds like the wisest option, could use regular cam cores. This is a drag & drive style car after all, it might make life a lot easier in the future.
Plynouth VIP '67 TT IC EFI
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Re: Cam bearing bore shot in BB, how to fix?
[Re: jyrki]
#3191736
11/18/23 10:13 AM
11/18/23 10:13 AM
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Joined: Jan 2012
Posts: 2,690 Stuttgart, Arkansas
rickseeman
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Sleeving is pretty simple. You would only sleeve the damaged ones. I would use aluminum sleeves so it wouldn't loosen from dissimilar metal expansion rates. This has already been done thousands of times in bearing housings etc. Your man will bore them out to size, then make 2 sleeves which are a little small on the id, then drill the oil hole, then press them in and then bore to the proper size. It won't take him long.
2011 Drag Pak Challenger
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Re: Cam bearing bore shot in BB, how to fix?
[Re: rickseeman]
#3191738
11/18/23 10:40 AM
11/18/23 10:40 AM
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Posts: 3,505 DFW
mr_340
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From what I've found, the so-called 54mm bearings are really Ø2.125" BBF journal sizes. I spent a lot of time looking for 54mm roller bearings for my Hemi block and finally was told it was the BBF bearing size.
Floyd Lippencott IV
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Re: Cam bearing bore shot in BB, how to fix?
[Re: mr_340]
#3192373
11/21/23 09:52 AM
11/21/23 09:52 AM
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jyrki
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A local machinist said he m0st likely can line bore the cam bearing holes big enough to make them straight and round, and then make custom oversize babbit bearings so that a regular cam can be used. I think I'll go that route.
Plynouth VIP '67 TT IC EFI
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Re: Cam bearing bore shot in BB, how to fix?
[Re: rickseeman]
#3192405
11/21/23 01:03 PM
11/21/23 01:03 PM
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Joined: Dec 2006
Posts: 2,124 Byron, NY
W.I.N. Racing
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Sleeving is pretty simple. You would only sleeve the damaged ones. I would use aluminum sleeves so it wouldn't loosen from dissimilar metal expansion rates. This has already been done thousands of times in bearing housings etc. Your man will bore them out to size, then make 2 sleeves which are a little small on the id, then drill the oil hole, then press them in and then bore to the proper size. It won't take him long. ^^^^^^^^^^^^^^^^^ What he said
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Cam bearing bore shot in BB, how to fix?
[Re: Cab_Burge]
#3192506
11/21/23 07:57 PM
11/21/23 07:57 PM
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Joined: Jan 2003
Posts: 8,188 Plymouth, MI
Blusmbl
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I have no help to offer but just wanted to mention your Fury is awesome and hope you make it overseas again for another drag and drive event!
'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
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