Going from a 88" to 100", WITHOUT boring cases

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Oct 6, 2015 | 12:58 PM

#21

CornbredNE

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Joined: Jul 2007

Posts: 250

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From: Suffolk, VA

Quote:

Originally Posted by CornbredNE

The jugs would, pistons would have to be custom fit for the 4" crank. I'd guess someone will come with a piston in the near future.

S&S makes a 4" bore piston that should work with those jugs from Harley. Part #'s for the Harley jugs is 16800102 and the S&S piston part # is 92-1430.

Oct 6, 2015 | 01:31 PM

#22

bikerlaw

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Joined: Jun 2007

Posts: 9,193

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From: Richmond, VA

Quote:

Originally Posted by CornbredNE

S&S makes a 4" bore piston that should work with those jugs from Harley. Part #'s for the Harley jugs is 16800102 and the S&S piston part # is 92-1430.

Dang, well there you go. For whatever reason the O.P. has for fixating on a 4.00 x 4.00 motor, there is his solution. That's kinda cool, actually.

Last edited by bikerlaw; Oct 6, 2015 at 01:39 PM.

Oct 6, 2015 | 06:59 PM

#23

just plain john

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Joined: Nov 2012

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From: Pasadena TX

S&S has both 4" pistons and jugs in 1 kit. That's news to me, but it's just what the OP wanted. Strange that he hasn't replied by now. http://www.sscycle.com/product/4-Bor...ts-p24395.html

Oct 6, 2015 | 10:04 PM

#24

bikerlaw

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Joined: Jun 2007

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From: Richmond, VA

Quote:

Originally Posted by just plain john

S&S has both 4" pistons and jugs in 1 kit. That's news to me, but it's just what the OP wanted. Strange that he hasn't replied by now. http://www.sscycle.com/product/4-Bor...ts-p24395.html

Yeah, strange. I'm guessing it was a "I want a square motor" idea, cause that's cool..... and then it wasn't. Lol.

Oct 6, 2015 | 10:11 PM

#25

CndUltra95

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Joined: Jul 2006

Posts: 1,302

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From: Near YVR

Quote:

Originally Posted by grbrown

If you insist on a 'square' engine the closest you are going to get is an S&S 111", which is 4 1/8" square. With a stock H-D crankshaft the largest bore available will give you 98", falling short on bore diameter by a mere 1/16". Surely that is close enough?!

But, it still aint a square motor.
Maybe the OP could look into a Merch Performance 100ci motor for his twin cam frame.

The Merch Motors where are Evo based and they are out there.
I know of a 100ci and a 120ci.
Best Regards,
Rob

Oct 8, 2015 | 09:45 PM

#26

gaslog4

Thread Starter

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Joined: Jan 2008

Posts: 194

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From: Raleigh, NC

Oh yes, I am still around...Thanks for the information, this is just what I wanted to know.. Thanks CornbredNE for the information also...If I have to purchase separate jugs, I will get in touch with you... I will be calling S&S tomorrow to see what they have available. Thanks for the back and forth also from the forum members also...

Oct 12, 2015 | 08:20 PM

#27

gaslog4

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Joined: Jan 2008

Posts: 194

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From: Raleigh, NC

Called S&S and they no longer make the 100" kit any more...Looks like that the dream is over, am dead in the water because I probably cant afford to have custom pistons made even if Harley can provide the 4" Bore Jugs. Without the pistons I'm screwed...Thanks for all who contributed to the thread..