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-   -   when to do valve adjustment post top end rebuild (http://forums.pelicanparts.com/911-engine-rebuilding-forum/1034324-when-do-valve-adjustment-post-top-end-rebuild.html)

7783911 07-10-2019 04:27 AM

when to do valve adjustment post top end rebuild
 
I had the top end redone to tackle oil leaks (rockers, seals, new valve guides and valves etc

what is the advice with regards to break in prior to valve adjustment/oil change...i ve heard anywhere from 800 miles to 3000 miles?

RedCoupe 07-10-2019 06:04 AM

It depends whether piston rings were changed. With new rings, you are normally running a break-in type of oil that should be changed after a short interval. If the work was just head work (valve grind, guides, seals) then it's pretty much normal maintenance schedule.

7783911 07-10-2019 06:21 AM

yes, rings were also done, cylinders honed. I ve had limited driving opportunity this year so only 600 Miles on the rebuild so far

7783911 07-10-2019 06:26 AM

forgot to mention, followed instructions to stay below 4K rpm for first 500 miles and use engine breaking etc to seat the rings...now am permitted to go to 5K rpm.

Trackrash 07-10-2019 12:06 PM

Change it after 500 then again at 1000.

I would adjust valves then, plus check the head stud torque.

Why keep under 5K?


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