bearings and oil seal issues.

C

chrisdurtnall

Member
I am having to replace the rear crankcase oil seal on my 1970 Rover P6 3500S. I have the rope type seal from winns. My oil pressure seems low around 35 psi when warm so I was thinking that with the sump removed would it be a good time to check the main bearings. If I have to change the bearings should I replace them with standard bearings or would i have to check the crankshaft wear and order undersize bearings Should I also replace the end float spacers as well.
Has anyone done this work and can anyone give me some pointers.
Regards
Chris Durtnall
 
The RV8 is very tolerant of low oil pressure, 35psi is not low. The thrust bearings controlling end float are part of the centre main bearing shells. The crankshaft journals are not prone to wear so changing the shells will be sufficient, but measuring the journals to check would be advisable. So that just leaves the rope seal change to contend with.
 
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Mine is dead silent all the time, and the very best pressure I see is 2bar, or 30psi, less when fully warmed up.
 
If the crankshaft has already been reground, and oversize bearings fitted, then you will need to fit the same oversize bearings. It should say on the outside of the shell, if they are over or standard.

I have moved your thread to the relevant section btw.
 
chrisdurtnall said:
I am having to replace the rear crankcase oil seal on my 1970 Rover P6 3500S. I have the rope type seal from winns. My oil pressure seems low around 35 psi when warm so I was thinking that with the sump removed would it be a good time to check the main bearings. If I have to change the bearings should I replace them with standard bearings or would i have to check the crankshaft wear and order undersize bearings Should I also replace the end float spacers as well.
Has anyone done this work and can anyone give me some pointers.
Regards
Chris Durtnall
Click to expand...
Chris,
Why do you think that 35 psi oil pressure is low? Is this at 2500 rpm? Normal oil pressure is 30 to 40 psi at operating temperature running at some 2400 to 2500 rpm.

How many miles has your engine covered? If it is close to 200,000 miles, then by all means. If it is half that or less, my advice is to leave it alone. I know that might sound a bit blunt, but the Rover V8 is a very good engine that will run considerable distances without interference.
If your rope seal is leaking, then replacing it will be necessary, but otherwise....

Ron.
 
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