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Search: Posts Made By: av8tor1977
Showing results 1 to 7 of 7
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Forum: Engine Conversions
02-22-2018, 10:21 PM
Replies: 12
Views: 5,882
Posted By av8tor1977

Yes. I milled down the fins on the flywheel as...

Yes. I milled down the fins on the flywheel as much as feasible, then re-balanced it. That one was for a customer that wanted to keep the magneto. As mentioned, on all my personal engines, I...
Forum: Engine Conversions
02-19-2018, 09:44 AM
Replies: 12
Views: 5,882
Posted By av8tor1977

Yep, I believe it. Smog laws. Many of them...

Yep, I believe it. Smog laws. Many of them don't make sense. A properly adjusted and running engine will have the lowest emissions. A lean misfire will be emitting a bunch of nasties, as will...
Forum: Engine Conversions
02-18-2018, 04:13 PM
Replies: 12
Views: 5,882
Posted By av8tor1977

Hmmmm... The old memory gets foggy. Now after...

Hmmmm... The old memory gets foggy. Now after more thought, I might have had to use the 65cc Four Mix carb on the 32 and 36c Four Mixes because the smaller ones didn't have dual adjustment. Can't...
Forum: Engine Conversions
02-18-2018, 04:08 PM
Replies: 12
Views: 5,882
Posted By av8tor1977

I tend to prefer the original carb because it has...

I tend to prefer the original carb because it has a fuel pump pulse system designed by Stihl to work best with the unique Four Mix design. Other people however, have used other carbs with success. ...
Forum: Engine Conversions
02-18-2018, 01:50 PM
Replies: 12
Views: 5,882
Posted By av8tor1977

If you happen to set one of these up to run soon,...

If you happen to set one of these up to run soon, note that with the exhaust breathing more free, and with no air filter, they run way too lean. And they won't richen up enough by adjustment unless...
Forum: Engine Conversions
02-18-2018, 01:36 PM
Replies: 12
Views: 5,882
Posted By av8tor1977

Well, it's true that on the Four Mix engines,...

Well, it's true that on the Four Mix engines, total crankcase, (and valve cover, cam cover, etc.), sealing is a must, as they operate like a two stroke, with the air/fuel entering the crankcase. They...
Forum: Engine Conversions
02-18-2018, 09:01 AM
Replies: 12
Views: 5,882
Posted By av8tor1977

I say "Go for it"! (I suspect you knew I would.)....

I say "Go for it"! (I suspect you knew I would.). ;~)

The Stihl Four Mix engines make very good power for a four stroke; almost the level of a similar size two stroke. Yes, the weight is higher,...
Showing results 1 to 7 of 7


 
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