Engine Rotation - Which direction?

Tranner · Last edited by Tranner on May 08, 2004 9:08 pm; edited 1 time in total

A pic of my old rusty motor. It's shot and I'm looking for a new long block.[/img]

Tranner · Posted: May 08, 2004 9:05 pm Post subject:

Wow, success in posting a picture.

This motor is a 351W in an 85 SN 2001. I don't know what rotation the motor is. I can say this though, the crankshaft pulley rotates counter clockwise/to the left.

Is this considered standard rotation? I thought that Nautiques were all reverse rotation.

Thanks,
John

vette74 · Posted: May 11, 2004 7:50 am Post subject:

If it rotates counter clock ise it is reverse rotation. All american car engines rotate clockwise.

DiyGuy · Soul Rider Joined: 26 Dec 2003 Posts: 460

Just by the look of the fins on the alternator, my guess would be clockwise as viewed from the front. Don't take that as gospel though.

Tranner · Posted: May 11, 2004 8:33 am Post subject:

Maybe the alternator is wrong then because all the belts move to the left/counter clockwise. And when you look at the bottom crank shaft pulley it also rotates counter clockwise.

As vette74 said, I think it is probably a reverse rotation.

In any case, I've priced a few rebuilt long blocks out and a local rebuilder (Santa Ana, CA) claims he has availability on a reverse rotation marine 351 W long block for $1800 (no core exchange). I'm thinking about going this route so I don't have shipping and core exchanges to deal with. He carries a 1 yr unlimited hour warranty.