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Typ_315
Samba Member
Joined: April 23, 2006
Posts: 51
Location: California, USA
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 Posted: Sun Oct 19, 2014 8:41 pm Post subject: H Beam Con Rod doesn't fit Stroker Crank. Need help! |
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Hi All,
I have a 78.4 mm welded stroker crank which I picked up from a reputable vendor, however it won't accept the aftermarket h beam con rods, i.e. there is very little clearance, if any.
He stated that he only used the forged VW con rod, which isn't as thick / wide as an aftermarket h beam.
Does anyone know of a good machine shop in the San Fernando valley or Los Angeles County who skim the rods so there is the right amount of clearance with the crank?
Cheers,
Paul |
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jfats808
Samba Member
Joined: December 10, 2007
Posts: 5022
Location: oahu hawaii
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| Posted: Sun Oct 19, 2014 9:23 pm Post subject: |
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Are you sure you have compatible parts? Such as vw with vw journals? . I suggest you mic the rod journals on both , rod with bearings and compare. Then make changes if all else fails.
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Typ_315
Samba Member
Joined: April 23, 2006
Posts: 51
Location: California, USA
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| Posted: Sun Oct 19, 2014 9:26 pm Post subject: |
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Hi there,
Yes, I checked, they are std vw journals, 55.00 mm. The vendor told me that only the stock rod's would fit, so I have no other choice but to find a machine shop who can skim thousandth's off the rod with so there is clearance.
Cheers,
Paul |
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earthquake
Samba Member
Joined: January 10, 2008
Posts: 3984
Location: SANDY VALLEY, NEVADA
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| Posted: Sun Oct 19, 2014 10:15 pm Post subject: |
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Are you talking about side clearance? You can have them machined or sand them down on a sheet of wet & dry sand paper on a piece of glass if it not too much.
Casey
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trbugman
Samba Member
Joined: November 28, 2011
Posts: 67
Location: SoCal
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| Posted: Sun Oct 19, 2014 10:26 pm Post subject: |
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It could be rod/crank side clearance or the bearing ridding on the radius of the crank journal.
Put the rod on the crank without the bearing and you should be able to tell what the problem is.
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esde
Samba Member
Joined: October 20, 2007
Posts: 5969
Location: central rust belt
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| Posted: Mon Oct 20, 2014 4:22 am Post subject: |
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| If the manufacturer couldn't get the parts close enough to even bolt together, you didn't want them anyway. Get better parts |
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Mon Oct 20, 2014 12:18 pm Post subject: |
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| esde wrote: |
| If the manufacturer couldn't get the parts close enough to even bolt together, you didn't want them anyway. Get better parts |
I agree.(for both rods & crank) |
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