Re-conditioning side plates ( resurfacing and re hardening)

[C. Ludwig]

Originally Posted by To_Slow

61 rms

Sure about that number? We had some plates ground a while back and took some measurements of re-ground used and brand new OE plates. We found a new set of OE plate to be about 12 Ra (micro-inches) on average. Our guy got the used plates to an average of 8 Ra.

The rough correlation between the RMS and Ra is around 11%. So our measurements for the stock plate would roughly be 13 RMS.

They look to good to be as bad as your measurement would suggest.

[To_Slow]

Originally Posted by C. Ludwig

Sure about that number? We had some plates ground a while back and took some measurements of re-ground used and brand new OE plates. We found a new set of OE plate to be about 12 Ra (micro-inches) on average. Our guy got the used plates to an average of 8 Ra.

The rough correlation between the RMS and Ra is around 11%. So our measurements for the stock plate would roughly be 13 RMS.

They look to good to be as bad as your measurement would suggest.

Just got in to work, re-cheeked the plates, got a RMS of 12. I asked the night shift guy to do it for me, he checked the back side of the rear plate ...

O well....

[C. Ludwig]

Originally Posted by To_Slow

Just got in to work, re-cheeked the plates, got a RMS of 12. I asked the night shift guy to do it for me, he checked the back side of the rear plate ...

O well....

That's funny.