Go Back   Harley Davidson Forums > Harley Davidson Tech & Mechanical Forum > Exhaust System Topics
Sign in using an external account
Register Forgot Password?
Search


Exhaust System Topics New and old exhaust system discussions. Fitment issues to sound bites and suggestions. Post them here.
Sponsored by: Samson Exhaust

Reply
 
 
 
P
 
Thread Tools Search this Thread
  #1  
Old 06-15-2010, 08:00 PM
neonhomer's Avatar
neonhomer neonhomer is offline
Road Captain
Join Date: Apr 2008
Location: Volusia County, FL
Posts: 588
Send a message via Yahoo to neonhomer
Default 96" crank in 88 cases?

This question is a bit out there, but brought on by a quick flash of fear.

A mechanic friend of mine is going to pull my primary cover this weekend and check the clutch and chain and compensator bolt/nut/whatever. I was thinking in my head how he would be going through all this, getting to the bolt, putting a torque wrench on it and thinking.... "If 160 ft/lbs gets loose, let's try 180/190/200/etc)..... SNAP!!! "

Mental scene ends with him calling me telling me I need either a new crank, or a way to get the old bolt out. So I was thinking about eBay cranks, and thought about a 96" crank.

Could you drop a 96" crank into a 88 case without too much fuss? I don't know what the bearing specs or sizes are, journal sizes, etc etc... so I can't figure it out.

I am going to say no.... only because the MC made a few changes between the 88 & 96, that they probably used larger journals, larger bearings, more case clearing , etc etc...
__________________
NeonHomer

2006 Ultra Classic Peace Officer Edition
Reply With Quote
  #2  
Old 06-15-2010, 11:23 PM
mentor70's Avatar
mentor70 mentor70 is offline
Road Warrior
Join Date: Dec 2006
Location: Diamond Bar, California
Posts: 1,530
Default

the crank will work, but the bearings may have to be changed.

if the 88 motor is newer than 03 it may interchange. if its older it will need Timken bearings
I would change to timkens regardless.

you will need new pistons to match the crank because the stroke is now longer.

if you buy a used crank, i would get it trued and welded before installation.
__________________
HQ 95 ci, .575 Firestorm cams
DTT ignition
Stage eleventeen HVP heads.
10.2 to 1 comp.
Miknui 42mm
D&D fat cat
Reply With Quote
  #3  
Old 06-16-2010, 05:24 AM
Hillsidecycle.com's Avatar
Hillsidecycle.com Hillsidecycle.com is offline
Sponsor
Join Date: Oct 2009
Posts: 5,832
Default

You'll also need all the primary internals, ie, fine-spline.
Scott
__________________
PALMER BROS.
HILLSIDE MOTORCYCLE & MACHINE, INC.
5225 S. MAIN ST., MUNNSVILLE, N.Y. 13409
315-495-6650
www.hillsidecycle.com
Palmer Bros. Performance Products
Complete Machine Shop
Case Boring, Cylinder boring
Complete Cylinder Head Shop
Super-Flow Flow Bench
Crank Rebuilding
Dyno Tuning
Our exclusive Predator Series Engines
From Flatheads, to 2014 models.
"OVER 30 YEARS OF BUILDING HARLEY POWER"
Facebook/Hillside Motorcycle & Machine
Reply With Quote
  #4  
Old 06-16-2010, 10:49 AM
07RoadHawg's Avatar
07RoadHawg 07RoadHawg is offline
Road Warrior
Join Date: Jun 2007
Location: Here
Posts: 1,770
Default

To add to what Scott said, I'd imagine you might have issues with the primary chain alignment too since the chain is behind the starter ring gear (inboard toward the inner primary case) on the TC88 and it's in front of the starter ring gear (toward the outer primary case) on the TC96. If it required a new clutch pack from a TC96 setup, I don't know if the splines are the same on the trans input shaft. At the very least, the starter won't line up with the ring gear anymore and you would need a new inner and outer primary setup.

I suppose you could make it work, but (and this is just my opinion) I'd go for a stroker crank made for the TC88. Sure it might cost more up front, but considering all the work you would have to do to get the TC96 crank to work.... FWIW
__________________
Reply With Quote
Old 06-16-2010, 10:49 AM
 
 
 
P
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
New Evo Engine 96 fatboy Engine Mechanical Topics 29 07-14-2014 05:05 AM
88" case mods for SE 103" groupw Engine Mechanical Topics 2 04-07-2014 05:52 AM
help need info ONEEYE05FLSTC Softail Models 0 03-01-2014 06:10 PM
Crankcase breather for Twin Cam 88 ... any experience? SURFOR Chop Dyna Glide Models 7 05-26-2010 08:15 PM
anyone installed timken bearings and had crank trued on 96" TC??? leeinmemphis General Harley Davidson Chat 5 01-29-2010 06:29 PM


Tags
2007, 88, 95, 96, boring, cases, ci, crank, crankshaft, davidson, engine, harley, harleys, hd, tc96, welded


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join HDForums

Advertising
Featured Sponsors
Vendor Directory
Sponsors

All times are GMT -5. The time now is 11:26 AM.


Internet Brands, Inc.