2 QM 20 Replace my YSE12 ?

[Cecil Tiller]

Greetings, Anyone know if a Yanmar 2 QM 20 will fit/ replace my original Yanmar Yse 12 ? `75- 30 Ft One advertised in local paper for $1600 , new riser, harness, mts, and books ?  Original shaft/propeller compatible ? Thanks in advance Cecil

 

[Steve Dion]

I would doubt it.

There is very little chance that this is going to be a slam dunk to swap out these engines. I doubt that the prop and shaft are going to be a match. Need a shorter shaft and a different prop. You can probably use the existing material but they will need modification. If you really want a good upgrade, look for a 2GM20F.

 

[Ed Schenck]

Have to disagree. . .

with Steve on this one. A good diesel for $1600?! I'd make it fit. I have a 2QM20 in my H37C('79) and it does real well with a two-blade folding prop given the 18000# displacement. I think the shaft length, having room for the stuffing box, would be the only obstacle. If you cannot find the exact dimensions on the site in the "Related Link" I have them at home.Edschencked@bfusa.com

 

[David]

2 QM 20

I have a 2QM 20. Strong engine. I agree with Ed for $1600, I would make it fit.

 

[Pat]

engine upgrade

You'll have to either repitch or replace your prop and, mabey shorten the shaft at the coupler end. It will fit in the engine room. I think this is a great upgrade because alot of the parts for the YSE, YSB, YSM series are NLA.Pat McCartin1979 H30 "Therapy"Lake Lanier, GA