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Can't Remember Bearings Or Babbitt's
#1381130 Sat Oct 17 2020 11:52 AM
Joined: Apr 2005
Posts: 373
M
Shop Shark
Does a 1953 Chevy 3600 pickup with a 216 engine have Bearing inserts or are there Babbitt's. Thanks!!!!!!

Marv.

Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381148 Sat Oct 17 2020 01:00 PM
Joined: Sep 2001
Posts: 30,561
ace skiver
I think that no 216 engines originally came from the factory with insert rod-bearings?

I think that the 1953 Powerglide car 235s (and that year's Corvette 235s) had factory-equipment insert rod bearings?


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381157 Sat Oct 17 2020 02:10 PM
Joined: Jan 2001
Posts: 5,029
P
Master Gabster
Tim is correct!


See the USA in your vintage Chevrolet!
My Blog
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381159 Sat Oct 17 2020 02:12 PM
Joined: Feb 2004
Posts: 21,206
H
Boltergeist
All the 216's that I'm aware of had Babbit-lined connecting rods. There is a conversion bearing available that involves boring the Babbit rod out to fit the bearing, but some sizes of them are getting very scarce and expensive. A possible work-around is a rod bearing for a 3-cylinder Perkins Diesel engine. The rod is bored to fit the bearing, and the crankshaft is ground to fit its inside diameter. One advantage to that procedure is that a "worn out" .030" undersize 216 crankshaft can be reground another .030" to fit the standard size Perkins bearing. The crankshaft doesn't really care what size it is, as long as the oil clearance for the bearing is right. NASCAR engines run 8K+ RPM with a rod journal size of only 1.850"!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381161 Sat Oct 17 2020 02:16 PM
Joined: Sep 2001
Posts: 30,561
ace skiver
All 1954 and later 235 engines, and, all 261 engines (introduced in 1954) had insert bearings.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381194 Sat Oct 17 2020 07:36 PM
Joined: Nov 2000
Posts: 1,993
F
Shop Shark
Just to add a little something to Jerry’s post, if your 216 has been rebuilt in the past it May have insert bearings installed.


Professional Novice
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381195 Sat Oct 17 2020 08:07 PM
Joined: Feb 2004
Posts: 21,206
H
Boltergeist
I have discovered when machining rods for insert bearings that the Babbit used by GM in OEM connecting rods is extremely tough stuff. It can dull a high speed steel cutting bit with just a couple of passes. Rods reconditioned by aftermarket suppliers usually have much softer bearing metal than GM used originally. I've started using nothing but tungsten carbide cutters in my micrometer boring head for roughing out the rod bores, then finishing the diameter with a Sunnen hone.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381202 Sat Oct 17 2020 09:11 PM
Joined: May 2015
Posts: 2,954
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Jerrry, you do know that you can melt the babbit out without affecting the temper of the rods, right?
I know this because I've melted out a few on Model A rods (one going down the road when it was adjusted too tight).
You only need to get it up to around 600F. Easily done even with a propane torch.


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381209 Sat Oct 17 2020 10:28 PM
Joined: Feb 2004
Posts: 21,206
H
Boltergeist
Yes, I've done it that way also, but since a little of the rod also has to be bored to fit the insert bearings, it's simpler to get a true center with a last word dial indicator with the Babbit still in place. There's only a few thoudandths' worth of tolerance before the cutter starts getting into the rod bolts when boring for insert bearings.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Can't Remember Bearings Or Babbitt's
marvin ribbich #1381211 Sat Oct 17 2020 10:32 PM
Joined: May 2015
Posts: 2,954
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Ah! I understand now. Is the steel bore of the rod not concentric with the babbit?


Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
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