6.9 connecting rods

Reply Subscribe

Thread Tools

Search this Thread

Mar 11, 2014 | 11:23 PM

Minime2010

Thread Starter

New User

Joined: Oct 2013

Posts: 18

Likes: 0

6.9 connecting rods

I took apart my engine, and didn't label rods and caps, I've discovered letters on the rods and caps. If can recall correctly there are "D,O,M,C,W,S. The "D and C" are duplicates. I have two rods with "D" and two rods with "C". Do the letters have to match up? And if so what would I do about the duplicates? I'm trying to nat have to take them to the machine shop. Any and all help/advice is greatly appreciated.

Mar 12, 2014 | 01:35 AM

IDI guy

Elder User

Joined: Dec 2011

Posts: 751

Likes: 0

From: Kodiak, Alaska

I would just match them up as best as you can. I am thinking that replacing the conrod bearings will negate the fact that you mixed up the caps if I remember right the caps do have a front and a back but I dont remember how you can tell. I would definitely get new conrod and main bearings and get your crank turned.

Mar 12, 2014 | 09:25 PM

Minime2010

Thread Starter

New User

Joined: Oct 2013

Posts: 18

Likes: 0

I took your advice and matched letters, took to machinist and he said that they are all good and not out of round. I greatly appreciate it!

Mar 12, 2014 | 11:30 PM

airdale94

Tuned

Joined: Jul 2012

Posts: 426

Likes: 0

From: Topeka,Ks.

Make sure you check clearances between the rod caps (installed on the crank) and between the rod caps and crank lobe. Not sure the spec. Probably around .002-.003".

Mar 12, 2014 | 11:45 PM

IDI guy

Elder User

Joined: Dec 2011

Posts: 751

Likes: 0

From: Kodiak, Alaska

Quote:

Originally Posted by airdale94

Make sure you check clearances between the rod caps (installed on the crank) and between the rod caps and crank lobe. Not sure the spec. Probably around .002-.003".

I will look it up later and post the clearance for you.

Are you an aviator?

Mar 13, 2014 | 12:27 AM

airdale94

Tuned

Joined: Jul 2012

Posts: 426

Likes: 0

From: Topeka,Ks.

Quote:

Originally Posted by IDI guy

Are you an aviator?

Me? No. Just a brown shoe. I worked the top side on aircraft cariers in the Navy. That's what they (the black shoes - ships crew) called us (airdales).