7m or 6m crank??

[kwatso23]

Iv just bought a 2nd hand motor 4 my 86.5 supra. I pulled it down but I am unsure what crank Iv got. Iv heard that the 7m crank is fully counterweighted and has 12 counterweights which this one does.(doesn't have 6m cast on to the crank). Is this a 7m crank?
Im just hoping for someone to confirm this before I go and order the wrong crank scraper.
Also are there any differences in the flywheel bolt-on patterns between the 6m and 7m crank?
Cheers

 

[IJ.]

6M

7M

Otherwise identical.

 

[whitemike]

From what I've seen you're correct.

Here's my 6M crank:

I believe there's a thread around here comparing the differences. Also, no, there's no flywheel bolt differences of any year..

It would seem you have a 7M crank if It's fully counterweighted.

Mike

---------- Post added at 05:07 AM ---------- Previous post was at 05:04 AM ----------

Ah, IJ beat me to it (of course)