Crankshaft Restoration

Has anyone ever done this to a crank? I wonder.
My crankshaft has a service limit of 31.96mm on the journals and measures 31.92mm.
I just got off the phone from a place that does "metal spraying" using a variety of materials.
They would grind the journals down by 50 thou and then spray this material which has a Rockwell Hardness of 35 on and then grind to size. They tell me that they've done this with cranks from TVR's.[excellent British cars]
Does this sound a realistic way to go or is there something here I don't know?[older I get, less I know:woohoo: ]
Cost : in the region of £300 [$450] for 5 journals.:blink:
All comments appreciated. [even yours omr!]:lol:

cant find a good used crank?time to stuff kz650 motor in there !:laugh:

I've measured 5 so far, all ****ed.
Trouble is these bikes are all old now,ol ma kawa maketh no more and...AND... I've got new oem pistons to go in, valves, guides....so I'd rather stick to 500.
Problems,problems eh?

Ok, off topic but "wtf's a TVR"?

This :

I have seen the spray metal done on industrial cranks before, they dont turn near the rpm as the bike does, so I am not sure how it would hold up.
they used to chrome the cranks for some racing applications, kind of the same process and I know they worked, tht might be another avenue to look at

BSK650,thankyou.
Plating sounds interesting, I'll have a look around and see what comes up.

I have a feeling you may be getting an incorrect measurement. We service a lot of plain bearing cranks ( www.racecranks.com/ ) and have never seen any with all the journals that far below the limit without showing signs of bearing failure.

The 650s would kill the cranks in turbos, etc. but I mean KILLED. You wouldn't even need to measure it.:laugh:

In any event, stay away from that spray stuff. If it was infact worn that bad, you could get a good used crank for way less money and it would be many times more reliable.

Jay

Thanks a bunch Jay, thats the kind of info that makes this place soooo good.
Funny you should mention inaccurate measuring, the tool I'm using specifies an accuracy of plus/minus 1 thou, and I'm half blind [no joke] so I'm going to plastigauge with the new shells and get my associate in crime to confirm the reading. I'll put some piccys up for the [ladies of the night]
Can't thank you enough for that. Best Wishes.

get a good micrometer...
if its actually worn out send it to Marine Crankshaft. www.marinecrankshaftinc.com/