W9 with M motor

Has anyone ever put an M motor in a W9? What would it take? I need a motor for our w9, but don"t want to mortgage the whole farm to rebuild the low compression motor. Would a supped up m motor create enough hp and torque to use for field work? need enough to pull a 16 ft chisel or a four bottom plow. m motors look to be way cheaper to work on than the w9 motor. I know that they are smaller cu, but there are a lot of kits available for the m to improve hp, and the w9 sleeves are so expensive, it is not practical for me to purchase. Thanks in advance for your time.
 
Not really the right choice. One can twist an M engine to 75HP but it will be nowhere as strong as the 9 engine in torque or fundamental power. To twist the M engine to grater RPM would also near double the speed of the 9 chassis.
Putting a small block chevy or ford in it with 350 cubes and governed to 2000, an RV cam with low end credibility would be sweet and not out of the ball park on price. Adapting either the M or the V8 to the chassis would be about the same effort, and way more serious about the implements you desire to pull. Jim
 
Why wouldn't you just build an M motor and run it in an M? Yes, it will be light but that is what ballast is for.
 
You know,just yesterday i was wondering if a W-9 engine could be 'shoehorned' into an M.If it could be done,that would be one STRONG M! Steve
 
(quoted from post at 20:31:51 06/30/13) Why go to a smaller engine if you want the power of the M get a W-6 The 9 had a much bigger motor.

He said he would build the motor so it would have about the same hp as a 9. The reason he wanted to do an M motor is because a rebuild kit is $500 for an M and sleeves and pistons for a 9 are $2200.
 
By the time you're done buying an M engine, souping it up, and adapting it to fit the W-9 chassis, you probably won't be saving a whole lot of money over just rebuilding the W-9 engine.

Your biggest challenge will be hanging the M engine in the W-9's tub at the right height and distance so it will line up with the transmission input shaft and the throwout bearing will disengage the clutch. That's probably going to require some professional fabrication and machine work, which doesn't come cheap.

Then if the M clutch splines are wrong... Custom clutch.
Then if the M flywheel doesn't line up with the starter... Custom flywheel.

Yep, by the time you're done adapting everything it may just be cheaper to go ahead and rebuild the W-9 engine.
 
If you have low compression, why not re-ring it?
Get the head redone, hone it, re-ring it....unless I'm missing something here...
 
Thanks guys, it sounds like I should keep it original. You would think at the age of 46 I would have learned that it does not pay to try to cut corners, and cheaper isn"t always best. Thanks for the advice!
 
The idea may not be as far fetched as it first sounds.

If you can find a M&W crankshaft for the M engine it might not be too bad a fit for a W9. Standard stroke for the M is 5.25 versus the W9 at 5.5 inches. The M&W crankshaft gives the M engine a 5.75 inch stroke. Along with M&W 4.25 inch pistons (you may need a 264/281 block for this) you end up with 326 CID versus 335 CID in the W9. The longer stroke will compensate, at least partially, for the smaller bore.

Original pistons in the W9 are 4.4 inch diameter but 4.5 S&P sets were available to make it 350 CID. Engine rpm are nearly the same. High idle for the M is 1595 versus the W9 high idle at 1650 rpm.
 

I am wondering why he doesnt just re-ring it? Get the head done and re-ring it. Whatever you choose, post your results.
 
Cubic inches would be the least of his worries in the project. An M engine with the stock crank, an overbore kit, and some head work will put out as much HP as a stock W-9 engine.

He is trying to SAVE money here, fellas. M&W cranks aren't free.

$2200 for pistons and sleeves for the W-9 engine will seem like chump change after he specs out a stroker crank and all the other hop-up parts for an M engine.

The only way he'd have a prayer of coming in cheaper is if the M engine could be bought not needing any work at all.
 
(quoted from post at 05:57:38 07/03/13) Oldaddage there just aint any substitute for CU IN 248 M to a 348 W-9

Sure there is. It's called compression.

We're comparing a fresh C248, probably running oversize pistons to make it a C264 or C281, to a tired C335 here.
 

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