http://www.harley-davidson.com/store...18-92500033--1

Description claims no machining of cases

 

It's odd that under "fitment" doesn't list very many models.

I wonder if they changed sleeve materials or something?

 

Axtell started this. 9.3 compression??? What a dog... But if ya can just get the jugs and they hold up, could be interesting...

 

holy thin spigot batman

 

By putting this 110" bolt on kit with a set of more aggressive cams and such on a 96-103" bike without the proper crank work, can you say KABOOM? Might as well go to a 120" or bigger.

 

why '11 and later? not that I'm interested really as there is no way I would go down that path

 

Is it me or is that dyno chart lacking some blue pills?

 

(copied from that item description)
-----Fits 50-state ’11-later DynaŽ FXD, FXDB and FXDC models equipped with Shorty Dual Exhaust. Installation requires separate purchase of Muffler P/N 64895-09 (Qty 2). Also fits 50-state ’10-later FXDF and FXDWG models. FXDF and FXDWG models requires separate purchase of Mufflers P/N 65884-09 and 65886-09. All DynaŽ models require separate purchase of Screamin’ Eagle high flow cleaner. ’10-’11 DynaŽ models require ACR Harness P/N 70623-06. Does not fit models with engine cases that have been machined to accept large-bore cylinders. Also fits 50-state ’11-later SoftailŽ models (except FLS, FLSS, FLSTFBS, FLSTN, FLSTSB, CVO™ 110 models or models with engine cases that have been machined to accept large-bore cylinders.). Requires separate purchase of Screamin’ Eagle high flow air cleaner. ’11 SoftailŽ models require ACR Harness P/N 70623-11.------

Little confusing wording, but sounds like some models need cases bored, some don't..... My guess is all do... But I don't know.

My understanding of cubic inches is you only get more with larger bore and Pistons, OR, longer stroke. Longer stroke cannot be obtained without crankshaft work, so bigger jugs and bigger pistons is all this is talking about.

Again, my understanding of the stock HD cases was 107 was the largest possible without case boring....

Something seems wrong here to me...

 

In order to yeild 110", on top of the 4 3/8" stroke, it has to be a 4" piston.
NO WAY, SHAPE, OR FORM can that be done w/o boring the cases, regardless what is said in that advertisement.
3.937" bore is the limit, at 107".
Scott

 

What did they change in 2011 that this setup wouldn't work on older models? Something is missing here, no way HD would leave paper thin cylinders.