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Volkie1
Samba Member
Joined: September 01, 2018
Posts: 39
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 Posted: Sun Nov 25, 2018 3:39 pm Post subject: Stock case Stroker |
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| What is the largest stroke crank that will fit in a case which is stock. I'm hearing 74mm but also people saying a 76 will fit |
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andy198712
Samba Member
Joined: December 05, 2010
Posts: 1209
Location: Cornwall - UK
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| Posted: Sun Nov 25, 2018 3:48 pm Post subject: Re: Stock case Stroker |
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Without clearancing?
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Volkie1
Samba Member
Joined: September 01, 2018
Posts: 39
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| Posted: Sun Nov 25, 2018 3:50 pm Post subject: Re: Stock case Stroker |
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| Yeah no clearancing at all. Bone stock |
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weasel_ugs
Samba Member
Joined: March 16, 2012
Posts: 721
Location: Prescott Valley,Az.
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| Posted: Sun Nov 25, 2018 3:52 pm Post subject: Re: Stock case Stroker |
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| Also depends on wether you using chevy sized journals too. |
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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: Sun Nov 25, 2018 3:52 pm Post subject: Re: Stock case Stroker |
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Stroke is your friend, why limit it to a unclearanced case?
Dan |
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Volkie1
Samba Member
Joined: September 01, 2018
Posts: 39
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| Posted: Sun Nov 25, 2018 3:54 pm Post subject: Re: Stock case Stroker |
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| I'm going to use vw journal on the crank |
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UK Luke 72
Samba Member
Joined: September 07, 2011
Posts: 2867
Location: Little Britain
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Danwvw
Samba Member
Joined: July 31, 2012
Posts: 8892
Location: Oregon Coast
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| Posted: Sun Nov 25, 2018 4:08 pm Post subject: Re: Stock case Stroker |
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Depends on what Rods you get, I think the small 5/16" ARP bolt super racing H Beam VW crank rods may clear a 76mm stroke crank, Some folks claim 78.4mm crank can be made to work without much hand filing to a Stock Case. Again the Rods matter. I did the 74mm with 5.325" rods both H Beam and I Beam ARP Rods and they worked. But I had to clearance my Piston skirts. Which is easy with an angle grinder. The 74Stroke 5.525" VW rod combo is nice in that it is a stock width engine build that you can use stock pushrods and 69mm stoke "A" offset pistons with etc...
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HeyWatchThis
Samba Member
Joined: April 11, 2016
Posts: 96
Location: SoDak
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| Posted: Sun Nov 25, 2018 4:29 pm Post subject: Re: Stock case Stroker |
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Depends on cylinders, too. I've seen where 88mm piston skirts interfere with a 74mm crank.
I'm building a 74mm crank with 94mm pistons and a 76mm probably would not clear with the 3/8" ARP bolts on the scat 5.4 I-beam rods I have. It was close enough with mine I did some very light clearancing in the cylinder bores on the case for safety factor. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Sun Nov 25, 2018 4:45 pm Post subject: Re: Stock case Stroker |
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| 72-78 depending on which rods you use, what year case, and luck |
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Type 5 Joe
Banned
Joined: January 18, 2003
Posts: 1795
Location: Oregon
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| Posted: Sun Nov 25, 2018 5:58 pm Post subject: Re: Stock case Stroker |
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Every 78.4 stroke engine I have built needed clearancing.
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