Recent content by morrison250r

My new 342cc kool bore has used no oil. There is only 10 hours but it has not moved a drop. Mobile 1 5w-30 HM SL. I always let mine warm up while i drink coffee. I will post again at 25 hours.

Chrome plating on the cylinder. I should have know that. B&S used a aluminum cylinder with a plated piston right?

I fly molel airplanes and one of my models uses a saito engine that is made in japan. They are four stroke glow ignition engines that use a mixture of methanol, 2-stroke oil, and maybe nitromethane. They range in size from .3 to 2.2 in3 single cylinder to 4.5 in3 radials. Mine is a .82 size that...

How long have the kool bore engine been out? What about others like it?(other aluminum sleeved engines) How about expected life? I should add I have no problems with mine although it has only 18 hours on it so far. Every snowblower I have owned from 30+ year old snapper to 10 year old craftsman...

270 hours was just a random number. The obvious point I was trying to make was that the reason they were not rated above 250 hours(like 500 hours) is bacause it will not pass the test at the next higher rating, 500 hours. However it will pass at 250 hours. If the engine would pass at that hour...

I checked the sparkplug on mine. It looked good. It has 18 hours on it. I have used M1 5w-30 for about 10 hours of the time. I changed to the M1 5w-30 high mileage SL rated stuff for now.

And craftsman was only an example. There are others.

I do not know of any contests. If you do not have much money why not find a used one? Often they can be bought cheap (or free) and only need basic repair like a carb. cleaning or even just fresh fuel and TLC. Keep on the lookout in backyards, behind sheds and such. Then knock on the door and...

Yes you both are correct. I misunderstood. Sometimes I read things without really reading them. However if the engine could maintain emissions for say 300 or 400 hours would B&S not up the rating to the expected life? Why not 270 hours? Because B&S can not meet the requirements using this...

How is an aluminum sleeve a better choise for a snowblower? I will check my sparkplug in the next few weeks and reply with the results. I too ran M1 5w-30 off and on. I am going to switch to an SL rated oil 0w-30 if I can find it, 5w-30 otherwise. B&S do make a snow series max that is cast...

I got a new ariens 32" pro model. I paid about $2300 for it in December of 2009. It too has the kool bore engine. I changed the engine oil after the first hour, and every hour after that until the metalic "dust" was gone. So far it has about 20 hours on it. I switched to synthetic oil at about 5...

Most of the infomation I have read said that the piston was different between the C.I. bore engines and the aluminum bore engines. There is also a myth that B&S aluminum cylinder engines can not be bored oversize because the "plating" can not be redone. This is not true. B&S makes oversized...

What I meant by "plain aluminum" was aluminum or an aluminum alloy that had the same composition throughout the thickness of the material. In other words un-plated.

Left over race fuel? I do not understand.

Well of corse AV100LL is bettter than pump fuel! He asked if he could run leaded fuel in his engine. Is a snowmobile engine not a "smaller, high RPM two-srtroke"? When someone mentions leaded fuel in a surface dirven vehicle most people think of vp racing, sunoco, exc. not airplane fuel. Why do...