Chrome the crank journals ?
 

Re: Chrome the crank journals ?
 

Roger,

You may want to read this if you are thinking about chroming a crank.

http://forums.pelicanparts.com/911-e...k-std-std.html

Chuck

Re: Chrome the crank journals ?
 

I've had several shafts repaired with hard chrome but they were power transmission type shafts that had a small journal that needed built back to specs to keep the tapered roller races a tight fit. A crankshaft is a whole nother ball game. I've heard all sorts of stories about welding up journals to get long strokes and hard chroming others but it is a gamble. The shafts I had repaired were $6500 new and the repairs ran about $1500 so it was worth it on those. On the old Pratt & Whitney radial engines they used to hard chrome the link rod bushings back to specs but they wouldn't touch the master journals.

Kerby

Re: Chrome the crank journals ?
 

The theory of applying a very hard, slick, surface to the crank journals is a good one. And, the chroming process offers the added advantage of being able to increase journal diameter so a mildly worn journal can be restored to original size. However, the strength of a steel crank is sacraficed when dunked in the chroming tank for several hours. I, personally, have never chromed a stock Flathead nodular crank and have not explored the possibility. But I have had some Boss 302 forged steel cranks done and know that one of them broke.