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Repair crank seal surface?
#2646420
04/18/19 10:44 AM
04/18/19 10:44 AM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
OP
master
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OP
master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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I’ve repaired crank snouts with hard chroming, but I am not so sure it would be the best solution for the rear main seal area. I’ve read that hard chroming creates embrittlement in the base metal being plated. Not a good situation considering all the power is going through that journal. I never had anything spray welded. It sounds like that may be an alternative. I was also thinking about turning it down, and running a rope seal. This is a 331 hemi.
"use it 'till it breaks, replace as needed"
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Re: Repair crank seal surface?
[Re: TRENDZ]
#2646446
04/18/19 11:51 AM
04/18/19 11:51 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I had a crank shop spray weld a crank.. that end journal is stronger than a rod journal(diameter of it) That weld job was on a 4 cyl diesel that ate a crank
Last edited by MR_P_BODY; 04/18/19 11:54 AM.
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Re: Repair crank seal surface?
[Re: MR_P_BODY]
#2646463
04/18/19 12:34 PM
04/18/19 12:34 PM
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Joined: Jan 2003
Posts: 25,988 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,988
Rio Linda, CA
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Hard-chroming is also an option.
The INTERNET, the MISinformation superhighway
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Re: Repair crank seal surface?
[Re: John_Kunkel]
#2646477
04/18/19 01:48 PM
04/18/19 01:48 PM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
OP
master
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OP
master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Does anyone know the size of a rear main seal journal for a small block? Maybe that is an option. I assumed that the seal hot heads sells is out of some standard common engine (Its only $14.00) Just by looks, I would say .020” would most likely clean it up. Has anyone ever made an undersized seal ?
"use it 'till it breaks, replace as needed"
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Re: Repair crank seal surface?
[Re: TRENDZ]
#2646520
04/18/19 04:21 PM
04/18/19 04:21 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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FYI.. that welding process is called spray transfer.. I was taught that back when I was in welding school .. its how you set up the machine but you run it hot
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Re: Repair crank seal surface?
[Re: MR_P_BODY]
#2647086
04/20/19 02:31 AM
04/20/19 02:31 AM
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Joined: Jan 2003
Posts: 771 Btween a rock and a hard place
moparlulu
super stock
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super stock
Joined: Jan 2003
Posts: 771
Btween a rock and a hard place
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FYI.. that welding process is called spray transfer.. I was taught that back when I was in welding school .. its how you set up the machine but you run it hot . This isn't quite the same mr P, they introduce powdered metal into a plasma stream that transfers to the grounded part if I'm not mistaken. I'd bet it would work fine.
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