motor upgrade

Reply Subscribe

Thread Tools

Search this Thread

Mar 14, 2018 | 02:16 PM

Cannonball39

Thread Starter

Stage I

Joined: Mar 2018

Posts: 1

Likes: 0

From: Memphis,TN

motor upgrade

I have a 01 fatboy flstf w/ an 88. I want to change to a 103. What do I need to make that happen ?

Mar 14, 2018 | 09:17 PM

langwilliams

Elite HDF Member

Joined: Jul 2010

Posts: 3,830

Likes: 302

From: Lorain Ohio

I'm no expert but I think 103 is out without doing a stroker crank so if you do that go 107....I think the way to go without having to split the cases is to go to a 96 c.i. since your bike is an 01 it has the better lower end (crank/bearings) I'd just do the piston jug swap to a 96 an have the heads done.

Mar 14, 2018 | 09:21 PM

Ed Ramberger

Grand HDF Member

Joined: May 2015

Posts: 3,570

Likes: 1,200

From: Then Wisconsin, now North Carolina

Need a stroker crank and stroker pistons. 95" and 103" have the same bore. The stroker pistons have the pin bore located in a different location.

88" bored out = 95"

Stroker crank bored to 88" bore = 96"

Stroker crank bored to 95" bore = 103"

Mar 14, 2018 | 09:47 PM

cdonis

Outstanding HDF Member

Joined: Jul 2013

Posts: 3,245

Likes: 297

From: Escalon ca

Isn't there a 98 kit available. Also may want to look up the HIPPO build. There was a thread not long ago where a forum member basically did a budget hippo build.

Mar 15, 2018 | 09:11 AM

tmilo1000

Tourer

Joined: Nov 2009

Posts: 392

Likes: 12

S & S makes a 100 inch kit for the 88 that just involves the pistons and jugs. Don't of anyone that has used this kit or what kind of results you can expect.

Mar 15, 2018 | 01:36 PM

Dutch101st

Road Captain

Joined: Mar 2014

Posts: 673

Likes: 19

From: Folsom, CA

I just purchased an '05 Springer and it has an S&S 98 kit in it...you can look at their site and see what is available...

https://www.sscycle.com/products/98-...silver-finish/

Last edited by Dutch101st; Mar 15, 2018 at 01:40 PM.