Hybrid K-271 engine "stroker"
 

Might be the wrong place for this tread but anyone build/run one? If your unfamiliar with it it's a 10hp block and pistion with a 12 hp rod and crank "stroker" build

Never personally built one. But I'd imagine it'd be better/cheaper just to build the 12 k301....

I had some parts laying around going to pull it in the 10hp class. Going to have the cam ground. Just wondering where everyone set timing and what carb worked best

Ahh. I see. I'm sure one of our puller guys will be along sooner than later. Does this class have a bore restriction or something? Around here if you put the 12 horse bottom end in the 10th horse block and somebody called you on it your engine would be tore down and you'd be done.

Most rules won't allow it.

I don't know if your familiar with engines at all or not, but you do know that the wrist pin on the 10 and 12 hp are different sizes right?

I was just going off of the b miller site just wondering if any one has built one and if there is any thing noticeable diffrent about how it performs. I do belive kirk also had a write up on how to build one

Well, if your looking to Mr. Miller for advice on how to build, I think you'll be pretty disappointed. Most of his information is about 10 years old or older. I guess it's hard to keep up with the new stuff when your in prison.

I'm going to say this again.... so pay attention. I doubt your local rules will allow it, so better check.

I really think you better stick to a standard crank. There are no gains in going to a 12hp stroke in a 10hp block. You can do more with it, without the extra stroke.

Not everyone knows it but the owner of that site was found guilty of having videos of children if you know what I mean, so nobody wants anything to do with him of his site!

Ask you questions here and you will get the info you need.

If you want to pull in a 10hp stock class, you can't stroke it and be legal. If you can't win unless you cheat, give it up.

Read and post the rules if you want help. Stock means different things to different groups.

If on a even playing field, spending time getting youy tractor, tires and weights dialed in will get the trophy.



Randy

Not a 100% sure.....you need a 10 horse power block that is marked K301 on the front-behind the starter pulley. The 12 horse crank counter weights will hit inside the 10 horse block if my memory is right. The 10 horse/K301 mark block has the room for a 12 horse power crank.

David Kirk has a few build ups on Killer Kohler ...... none were a stroker engine. As stated in an earlier post you need to check the rules.....most have a cubic inch limit.

I just asked if anyone has built one! not the life story of B miller why would you state his personal stuff in a reply to my thread anyways? especially from a couple senior members from the site? And the rules are the "gray"area. I am sure the senior members commenting have never ran/built stuff within the "gray" area.

Ok Firephight....
Here's the deal. You asked a question. We gave answers. We don't allow Mr. Millers info on our site.... so, like or not that's the deal. If you don't care for our answers, then feel free to seek your info elsewhere. We don't need lectured. Believe me, the guys who gave you answers are "in the know".

Is the pulling dead pull or using a pulling sled?

I would build a good running K241. Build some adjustability in your puller. Keep a log of every track you pull at. A few things I would keep track of are track surface, where you weight is placed and rear tire pressure.

Change 1 thing at a time when you make any changes.

Merk I am done commenting on this tread all I did was ask a question and get ridiculed from the senior members about a person they don't like. I don't know him or his personal business all I did was wanted some answers about building a 10hp with a 12hp crank and rod engine.




And you are correct kirk engine was a 301 build not a 241.

Just looked at this thread, I don't see that anyone ridiculed you. :bigthink:

I suggest that you tone it down a bit. :beerchug:

Check out his web site: wwwkirkengines.com . He has a few nice build ups. I have a K241 that I built the same way as the original Killer Kohler build. I wasn't able to use my high compression head because of valve clearance issues. I use a head that has the spark plug over the exhaust valve. I am very happy with the mods that were done.

I've done a few. its not legal around here anywhere so its not very common. if you have ever built any kind of engine he posted all the info you need . not hard to figure out. if you can't figure it out from there call him .

grey area. around here they measure bore and stroke so you can't build an engine like that in
"grey area" if I could I'd put a 3.25 or 3.5 crank in one, find an early sand cast K241 block and bore to 3 9/16. those blocks are very hard to find but do exist

Don,
Just curious, how do you tell if it is an early sand cast k241 block that can be bored out larger?
Thanks,
Mike

the early K241 that don't have the K301 cast in the block. they also have a seam in the intake port. not all are thick enough. you have to measure them. between the fins

My block is one of the early not stamped 301 guess I need to do some measuring