Re-conditioning side plates ( resurfacing and re hardening) - Page 5

To_Slow · 07-17-2008, 07:51 AM

Here is some info, pics on lapping-re surfacing and re hardening-nitrate.

Some shops that offer the lapping and grinding of the surface will miss lead you in saying that after lapping 1.5 thow off the surface of the face there is still hardness to the plate. Not true at all.

If you take a used plate gage check if for hardness prior to resurfacing and gage check it after the plate had been resurfaced 1.5 to 2 thou down you will get different readings. Meaning after lapping or grinding the plate it is very soft. I can actually tell when grinding right at 1 -1.5 thow deep the grinding wheel cuts very easily into the plate. Meaning very soft metal after removal of the material. What that means you will wear the plate very fast.

If you decide to have your plates lapped or resurfaced do the re-nitrating

Before pics, exactly how i received the plates....

The final result

All stock brass oil galley plugs have been replaced with new npt earls plugs 4 total, new freeze plugs and re zinc plated the dip stick tube with the rear coolant pipe..

You can also see on the front plate i do not cut down the front stationary gear pin. My machine is set up to lapp with out having to cut the pin down..

IF you guys are intrested in this service let me know...

07-17-2008, 07:51 AM	#1
To_Slow Rotary Fanatic Join Date: Feb 2008 Location: Shelby Twp MI. Posts: 315 Rep Power: 18	Re-conditioning side plates ( resurfacing and re hardening) Here is some info, pics on lapping-re surfacing and re hardening-nitrate. Some shops that offer the lapping and grinding of the surface will miss lead you in saying that after lapping 1.5 thow off the surface of the face there is still hardness to the plate. Not true at all. If you take a used plate gage check if for hardness prior to resurfacing and gage check it after the plate had been resurfaced 1.5 to 2 thou down you will get different readings. Meaning after lapping or grinding the plate it is very soft. I can actually tell when grinding right at 1 -1.5 thow deep the grinding wheel cuts very easily into the plate. Meaning very soft metal after removal of the material. What that means you will wear the plate very fast. If you decide to have your plates lapped or resurfaced do the re-nitrating Before pics, exactly how i received the plates.... The final result All stock brass oil galley plugs have been replaced with new npt earls plugs 4 total, new freeze plugs and re zinc plated the dip stick tube with the rear coolant pipe.. You can also see on the front plate i do not cut down the front stationary gear pin. My machine is set up to lapp with out having to cut the pin down.. IF you guys are intrested in this service let me know...