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modok
Samba Member
Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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 Posted: Wed Jan 10, 2018 7:59 pm Post subject: Re: Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill |
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| Brian_e wrote: |
Awesome work!!
Have you perfected the broken off flush pin removal yet?
Modok's FUBAR'ed crank repair service.
Brian |
Yes, actually. Discussed here.
https://www.thesamba.com/vw/forum/viewtopic.php?t=634846 |
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Dan Ruddock
Samba Member
Joined: October 25, 2012
Posts: 3594
Location: Sarasota, in my adopted state of Florida
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| Posted: Wed Jan 10, 2018 9:31 pm Post subject: Re: Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill |
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| esde wrote: |
| Ebel wrote: |
| I would think the labor involved would make it too costly to save stock cranks. |
when you can no longer find a std/std stock crank, it will be worth it. Hell, they're hard to find now. |
Std/std Cranks? yes and unfortunately lots of these cranks were ground not because they needed it but because someone want to sell a crank regrind.
Dan |
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[email protected]
Samba Member
Joined: August 15, 2002
Posts: 4394
Location: Brew City
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| Posted: Thu Jan 11, 2018 7:51 am Post subject: Re: Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill |
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| modok wrote: |
| [email protected] wrote: |
How much material did you end up taking off the end of the crank to make it flat?
I have at least 100 cranks that I need to do this to. Many of them are perfect std/std too.... |
Somewhere between .001 and .002" |
That's pretty good. That shouldn't affect setting end play at all.
_________________
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Cylinder Head Reference Sheet |
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motomwo
Samba Member
Joined: February 10, 2017
Posts: 263
Location: Oregon
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| Posted: Sat Jan 13, 2018 4:05 pm Post subject: Re: Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill |
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So what is the maximum acceptable run out with the fly wheel bolted on to the crank? Also where on the fly wheel are you taking the run out measurement from?
Marty
_________________
1961 Bug, 2276 cb wedge ports 44x37 11.1 comp fk10 1.5 rockers 48idf's 1 3/4" header Rancho pro street trans SAW axles Airkewld 4# narrowed beam, Koni shocks, Airkewld dis brake all around. 5.5/4.5 BRMs
1966 Bug, 2127, panchito heads, fk8, 1.3 rockers, dual 44idfs, 1 5/8 merge header, Rancho pro strt flyer, empi axles, Airkewld's 4" beam and discs all around and adjustable shocks. 4.5 & 5.5 BRMs |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26790
Location: Colorado Springs
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| Posted: Sat Jan 13, 2018 7:17 pm Post subject: Re: Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill |
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| motomwo wrote: |
So what is the maximum acceptable run out with the fly wheel bolted on to the crank? Also where on the fly wheel are you taking the run out measurement from?
Marty |
max-acceptable? That's quite subjective, for shoot the moon type stuff like rare cranks.
It says in the manual what the specification is, for OE service, and it's fairly lax
I'd like to see below .003 at the pressure plate, below .004 at the ring gear, below .002 at the friction surface, below .0015 at the rear seal, below .005 at the OD and backside, below .0005 at the thrust face
As what I would say as a NEW limit.
It could be twice that and function fine, but when machining the parts this is what I would shoot for, or better. |
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motomwo
Samba Member
Joined: February 10, 2017
Posts: 263
Location: Oregon
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| Posted: Sun Jan 14, 2018 7:57 am Post subject: Re: Fixing cranks; dowel pins loose?? Holes un-drilled and re-drill |
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Glen,
Thank you very much for the info.
Marty
_________________
1961 Bug, 2276 cb wedge ports 44x37 11.1 comp fk10 1.5 rockers 48idf's 1 3/4" header Rancho pro street trans SAW axles Airkewld 4# narrowed beam, Koni shocks, Airkewld dis brake all around. 5.5/4.5 BRMs
1966 Bug, 2127, panchito heads, fk8, 1.3 rockers, dual 44idfs, 1 5/8 merge header, Rancho pro strt flyer, empi axles, Airkewld's 4" beam and discs all around and adjustable shocks. 4.5 & 5.5 BRMs |
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