Merc 4" crank

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Oct 9, 2016 | 09:06 PM

3twinridges

Thread Starter

Cargo Master

Joined: Nov 2014

Posts: 2,442

Likes: 256

Merc 4" crank

Folks, I happened up on a Merc 4" crank this weekend. Cleanout holes are 5/8, marked f1601, largest counter weight is 6" across. Any other characteristics I should check to make sure? It's not marked 1cm.

Seller says its 10 under already and should clean up at 20 or 30 under. Sounds like it's worn out to me, thoughts on that?

JB

Oct 9, 2016 | 09:22 PM

jmadsen

Logistics Pro

Joined: Jul 2004

Posts: 4,363

Likes: 76

From: Utah

If the things not cracked anywhere 30 under bearings should still be available. Even if it was 40 under could still be ground as a stroker.

Oct 9, 2016 | 10:39 PM

ALBUQ F-1

Fleet Owner

Joined: Jul 2004

Posts: 27,292

Likes: 1,055

From: NM

Are the sludge trap plugs threaded? That's another clue. Measuring the throw is the best guarantee.

Oct 10, 2016 | 12:57 AM

Overkill-F1

More Turbo

Joined: May 2004

Posts: 544

Likes: 8

From: BC, Canada

Does it have the Mercury Dimple?
...Terry

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