Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
New showcase items
New showcase comments
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Showcase
New items
New comments
Latest content
Latest reviews
Latest updates
Search showcase
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Non - Specific
Engine Conversion
5.9 cr or 6.7 for conversion?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
[QUOTE="me2, post: 221081, member: 3825"] Just a quick note to say that Cummins has changed the connecting rods in the 6.7. Not sure when exactly it happened, but but according to Cummins Quickserve, ESN # 57772551 (early 07.5-08 MY, CM2100) had rod part numbers 3971212 whereas ESN # 57883235 (2010 engine, VIN year A, CM2200) has rod part numbers 5257364. The later rods have a non serviceable "lead free" pressed in wrist pin bushing. The line drawings of the rods show several differences as well. Cummins has a bulletin out on how to identify the various rods and warns not to interchange any of them within the engine set. Meaning all the rods in an engine need to be the same. I suspect the reason for that is weight differences. [/QUOTE]
Insert quotes…
Verification
Post reply
Random media
Latest posts
s364.5
Latest: htsummers22
Yesterday at 10:54 PM
Want to Buy
S
Won’t start issues
Latest: Scott G
Yesterday at 9:45 PM
7.3 Tech & FAQ
R
2010 headunit
Latest: Racer71
Yesterday at 4:57 PM
6.4 Tech
9
OEM LED sport headlights
Latest: 99fordman18
Thursday at 8:15 AM
2017+ 6.7 Aluminum Super Duty
10R140 failure
Latest: PSD-BLACK-CLOUD
May 9, 2025
2017+ 6.7 Aluminum Super Duty
Members online
No members online now.
Forums
Non - Specific
Engine Conversion
5.9 cr or 6.7 for conversion?
Top