RMS 250 six?

[Steeveedee]

I've never installed a rear main seal that didn't line up with the main caps. Maybe the tech has moved on. I haven't put in a rms in about 8 years.

To make it easier to install the seal, I would loosen all the main caps a turn so that there is room to roll the top half in without too much resistance.

[72SB]

Originally Posted by Steeveedee

I've never installed a rear main seal that didn't line up with the main caps. Maybe the tech has moved on..

Steve, they make 2 kinds of RMS. One straight and one staggard. My understanding is the staggard one allows the 2 halves of the seal to land NOT on the same line as bearing caps.... supposedly being a better seal. IDK, have not done a 2 piece before which is why I asked what is the "preferred" seal type for 2 piece. With that said...just putting in a standard 2 piece...you could put one end up further in the top which would bring the other side down into the lower. Thought that is how they did the old rope type on reinstalls???

Right now the leak is very minimal, few drops and nothing that affects oil level. Motor uses no oil otherwise. Currently just have a pan under truck and not always a drip, usually just after several hours of drive and then its only a few drops. My OCD though does not tolerate any leaks of any kind....but I may subside until or if it gets worse

[Steeveedee]

Showing my age here- On a rope type seal, you would cut short pieces and force them in on each side of the rear main in the block, and pack in all new rope on the cap. Trying to snake that old rope out and new rope in was a guarantee that the vehicle will be back. I did some of those in the '60s and '70s, but haven't seen anything like that since '84, when I graduated uni, left my mechanic job and went to work as an engineer.