100" Big Bore Kit
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Stellar HDF Member
Joined: Jan 2007
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From: Northern VA
100" Big Bore Kit
Has anyone used this kit for an engine build? How's the quality? What other kits are available that are comparable or better? Thanks again!
http://cgi.ebay.com/ebaymotors/100-M...Q5fAccessories
http://cgi.ebay.com/ebaymotors/100-M...Q5fAccessories
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Joined: Aug 2010
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From: Union,Ms
Has anyone used this kit for an engine build? How's the quality? What other kits are available that are comparable or better? Thanks again!
http://cgi.ebay.com/ebaymotors/100-M...Q5fAccessories
http://cgi.ebay.com/ebaymotors/100-M...Q5fAccessories
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Stellar HDF Member
Joined: Jan 2007
Posts: 3,447
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From: Northern VA
No, I missed that. Not something I'd want to tackle. There is an 85" bolt on kit out there, but it seems like a lot of expense just to add 5 ci. Wonder if I need to consider a crate engine to get the bigger cubes...?
Club Member
Joined: Jun 2007
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From: Bedford UK
Changing your motor for a bigger one is quite another matter! I have looked into the top end of the range and a 131" can be installed in a stock frame, beyond that they get taller and wider and need frame surgery to squeeze them in. Of those that fit it really is a matter of how deep your pocket is! Seems to me that going to a new motor is only worthwhile when making a significant increase and on that basis I chose my S&S 107". There are lots of other options out there. My 107 gives just over 100HP/TQ, but a 131" with around 140 each would be nice....
Cruiser
Joined: Nov 2007
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Not even 5 inches. What Harley calls an 80 incher is actually 81.4, somewhere around there.
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Joined: Jun 2007
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From: Bedford UK
I suspect the 85ci is just maximum rebore. Every .020 on the cylinder bore gives approx 1ci increase in capacity.
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Stellar HDF Member
Joined: Jan 2007
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From: Northern VA
If 85 ci is the largest bolt-on big bore kit available for an EVO, I can see why some choose to go with the larger after market engines.
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Club Member
Joined: Sep 2006
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From: Granite Falls, NC
go to www.revperf.com they have a 85 ci pistons & cylinders that do not use the steel sleeve. They are nickel-silicone-carbide electroplated bores. Motor does not have to be split to install. They run about 1k.
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Joined: Aug 2008
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From: Ohio
Those are Revolution Performance parts on the the Ebay add, some have had good luck but several have had disasters, the Rev Perf vendor thread on one of the forums was a horror show with piston failures and no support towards failed parts.
Axtell makes a good big bore kit that works but for $900 I would purchase a 4 5/8 S&S stroker kit and know I have a proven product.
Axtell makes a good big bore kit that works but for $900 I would purchase a 4 5/8 S&S stroker kit and know I have a proven product.