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  #21  
Old 08-22-2018, 02:27 PM
Pray-2-miss-rocks Pray-2-miss-rocks is offline
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Originally Posted by cooperino View Post
.040 in automotive is quite a bit because its done to multiple cylinders. It adds up!
Thanks for your replies. What I meant by .040 being quite a bit, is that .040 mill would yield almost an entire point of compression on many variants of head. Compression doesn't add up between cylinders, but if you meant a power increase adding up I can agree with that.
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  #22  
Old 08-22-2018, 02:30 PM
J-Mech J-Mech is offline
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Yet another new member who doesn't realize the people he is talking to.

We know what you want, we know what you mean. We understand the question. The answer is NO.
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  #23  
Old 08-22-2018, 02:41 PM
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cooperino cooperino is offline
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Originally Posted by Pray-2-miss-rocks View Post
Compression doesn't add up between cylinders, but if you meant a power increase adding up I can agree with that.
And.... You were looking for power increase. Were you not?

I say ya mill it. Put some cam 2 in it.. Throw the governor in the trash and add a hole in the head for some nitrous!It should be a short but fun ride
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  #24  
Old 08-22-2018, 02:42 PM
Pray-2-miss-rocks Pray-2-miss-rocks is offline
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Yet another new member who doesn't realize the people he is talking to.

We know what you want, we know what you mean. We understand the question. The answer is NO.
Judging by the many responses of "pointless to run 93" or "it'll run worse", with only one or two responses about milling to yield the compression, I couldn't tell...i might be new to your special forum, but I articulated my questions with specificity.
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  #25  
Old 08-22-2018, 02:43 PM
Pray-2-miss-rocks Pray-2-miss-rocks is offline
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And.... You were looking for power increase. Were you not?
Sure, in the form of a compression increase. Also, to take it a step further, probably whatever port work that could be done, if any, that would promote velocity
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  #26  
Old 08-22-2018, 02:56 PM
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Sure, in the form of a compression increase. Also, to take it a step further, probably whatever port work that could be done, if any, that would promote velocity
Please make sure you dyno before and after. I would love to see the massive HP gains from this.
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  #27  
Old 08-22-2018, 03:06 PM
Pray-2-miss-rocks Pray-2-miss-rocks is offline
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Please make sure you dyno before and after. I would love to see the massive HP gains from this.
Your hobby is messing with cub cadets, for whatever reason, is it not? My hobby/passion is building; race cars, trucks (exploration, rock crawling), boats, and engines for all. This isn't a quest for earth shattering power, it's an inexpensive way to make something more efficient and tinker with, it's about the act of doing it. Compared to my other vehicles and projects, it also is a cheap way to have fun (probably a reason for a lot of small tractor pullers). Making it more efficient and more powerful is a by-product of the project. I'm not entering in any races, pulls, etc, just doing what I like to do.

I don't understand the arrogance here, it's a lawn mower forum.

I'd still be happy to have a discussion, if anyone is so inclined.
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  #28  
Old 08-22-2018, 03:08 PM
J-Mech J-Mech is offline
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I might be new to your special forum, but I articulated my questions with specificity.
The only specific question you asked is:
Quote:
Is there a norm for head milling to run on 93? Carb jets to match?
The answer is emphatically no. Yes, you can mill the heads. Yes, you can port and polish the valve ports. Yes, you can drill the carb jet and give it more fuel. NO, IT WILL NOT GAIN ENOUGH COMPRESSION TO RUN 93. Will it gain power. Yes. Very little. There is basically nothing available to get what you desire. The K series Kohlers are one of the most popular engines to build up. Even those need major, major work to get high enough compression to see gains from higher octane fuels. But you don't have a K series.

Even if you got the compression up enough to justify the fuel, not you have a fixed timing engine. You would have to either figure out a way to change the mounting of the magneto, or figure out how many degrees you need to go up, and make an offset key. Or, convert to crank trigger ignion. Then, where do you mount the trigger? Most are set up to mount to the PTO end, which your tractor has a PTO mounted.... so that's out.

Wasting your time....
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  #29  
Old 08-22-2018, 03:12 PM
J-Mech J-Mech is offline
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I don't understand the arrogance here, it's a lawn mower forum.

I'd still be happy to have a discussion, if anyone is so inclined.
You don't understand the arrogance because you think you are talking to a couple dumb rednecks who play with lawn mowers. Coop, George and I all are seasoned experienced tech's who build engines. I build and play with these "lawn mower" engines. We are arrogant because we know what the f*** we are talking about.
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  #30  
Old 08-22-2018, 03:12 PM
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Before this great debate gets locked I'm gonna go ahead and say that it's nice to see coop and Jon on the same side for once.
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