ok I am almost convinced to keep the 12... what up mods can I do to that engine?:bigthink:

can someone recommend a good website for performance K301 parts? I already have a running engine.

I can recommend everything you need, plus videos of plowing with 10 and 12hp's. They're plenty big enough to pull a plow. But, I'm working. It will be later today before I can link up and post pics.

What size is your plow?

Zach Kerber

Excellent! the plow measures 9" ( if i'm doing it right).

The engine I have runs but the ignition seems to be to far advanced as I get a lot of spark knock... not sure if timing is even adjustable on those 12hp other then point gap. I think I will bore it .30 over for starters but after that i'm not sure what else can/should be done.

You don't need to bore it .030" over unless it needs that to clean up the cylinder. Over boring for power is not applicable in this application. Won't gain you anything to justify taking it to .030" over. Before you get a bunch of ideas on how to do it, wait and I'll go through it.

Yes, the timing is adjustable. Download and read the Kohler service manual from the tech section on this site. Check out my thread on static timing in the "Tech Tips" section. It explains it.

You measured wrong. They didn't make a 9" plow. It's likely an 8".

Ok thanks, sounds good

First off, lets go through some stuff.

You can find and download the K series service manual here:
http://www.onlycubcadets.net/forum/s...ead.php?t=4646

You can find my article on static timing here:
http://www.onlycubcadets.net/forum/s...ad.php?t=33461

How to measure a plow:
Attachment 89711


Here is a video of me plowing with a 10hp tractor:
https://www.youtube.com/watch?v=KjoprqwTkrI

As a note, I have since went to narrower tires on that tractor. That is a gear drive 10hp Cub pulling an 8" plow. You can pull a larger one though. Just what I have. That was the only video I had uploaded on YouTube and easy to link without uploading others. You don't need anything bigger than a 12HP to plow with.



On the motor, read this article:
http://www.kirkengines.com/downloads...ohlerPartI.pdf

Then Part II:
http://www.kirkengines.com/downloads...hlerPartII.pdf



That will keep you busy for a while. I'll be back later this evening with more info on building...... just read. Don't plan yet. :biggrin2:

Random question, should I put a heavier clutch spring in?:bigthink:

Yes, and a Kevlar disk.

We posted at the same time. Don't miss my above post. I can address the clutch later tonight also.