the nicks were there when I took it out.

Just see pic.




Thinking should I re-use it ... that's all.

 

circle the scratch please

 

Check runout but other than that it should be just fine.

 

Agreed, that part of the shaft doesn't touch anything. You may want to polish it out to reduce stress risers.

 

another pic



instead of Silver(when new), Do they always look "rainbow" color after "unknown" miles ?

 

It hardened with heat then surfaced. So yes, its supposed to look like theat.

 

hmm weird cuz i swear the other ones i saw looks a bit ... Different.

Anyway, thx for the reply

 

Steel has to get around 500 degrees F before it will turn blue like that. If that happened while your engine was running, a slightly discolored e-shaft would be the least of your problems.

The discoloration you see is a byproduct of the hardening process the e-shaft went under as it was being manufactured by Mazda.

 

The E-Shaft is fine. Here is a pic of another one pulled from a engine that ran great and had about 110k on it.

It's quite big so im going to leave it as a click link.

http://img.photobucket.com/albums/v1...s/P1010061.jpg

 

i can't really tell by the pictures what nicks you are talking about.

 

Now its time to think should I re-use it.

Simply because the engine I'm building are 95% brand new parts except the rotors (so far), even the rotors I sent it off to have new bearings install.

so ... if I re-use it, hmm, I have to send the stationary gear out as well and press new bearings in ... hmm ...

 

Don't worry about it.

 

delete

 

new shafts have that rainbow color too. as long as its straight, it should be fine

 

it should be straight because the engine runs fine just tons of smoke (oil control ring rubber cracked in 15 pieces)

I guess "maybe" I should just re-use all the rotating assembly ... with new bearings of course.

 

I kinda see the scuff marks.

In that area, the shaft is not touching anything, that area just goes through the center irons/intermediate housing.