McCulloch Kart Engines

[Bill G]

Bill, was that before or after Reinbeck last fall?.....................................
Mark

That was a month or so ago.

Bill

 

[Brmorgan]

Lee, I guess what I'm asking is: Why and/or how do the kart engines, being the same displacement, produce more power than the stock 125 engine? I totally understand swapping in a larger engine, but what are the differences that make a 123cc kart engine preferable over a 123cc chainsaw engine?

 

[Bill G]

Lee, I guess what I'm asking is: Why and/or how do the kart engines, being the same displacement, produce more power than the stock 125 engine? I totally understand swapping in a larger engine, but what are the differences that make a 123cc kart engine preferable over a 123cc chainsaw engine?

The better porting. The abilitity to add better intakes and multi carbs.

Bill

 

[TheRickster]

More agressive porting, Higher compression ratio, tighter crankcase stuffers. All these add to making more power..

Rick

 

[leeha]

Lee, I guess what I'm asking is: Why and/or how do the kart engines, being the same displacement, produce more power than the stock 125 engine? I totally understand swapping in a larger engine, but what are the differences that make a 123cc kart engine preferable over a 123cc chainsaw engine?

Much better porting, Higher compression ratios, Bolt on cylinder heads. Block stuffers, Intake manifolds but in the chainsaw frame you would have to use the stock intake unless you want to cut up the fuel tank.
Just a few differences.

Lee

 

[100 cc plus saw]

Lee, I guess what I'm asking is: Why and/or how do the kart engines, being the same displacement, produce more power than the stock 125 engine? I totally understand swapping in a larger engine, but what are the differences that make a 123cc kart engine preferable over a 123cc chainsaw engine?

101 has extra transfer port

 

[BALZOUT RACESHOP]

I JUST CAME ACROSS A 36'' 795 I WAS GOING TO MAKE A KART ENGINE OUT OF IT BUT I THINK I WILL SELL IT ANYONE WANT TO BUY IT I THINK ALL IS THERE BUT AIR CLEANER AND NO CHAIN IT A CALIF. SAW MAYBE 1969

 

[leeha]

I don't believe this saw is a 795, It is lacking the decomp. It looks like a 740 to me with that full wrap.

 

[kevin j]

Granted this is an old thread, but it looks like there’s new activity. With that picture it reminds me of a question I’ve asked many times and never got a good answer. Does anyone know why Mac went with the right hand recoil on certain models? what was the point what was the advantage or disadvantage and why did it never catch on? It just seems like a lot of extra width on that side.

 

[BALZOUT RACESHOP]

I don't believe this saw is a 795, It is lacking the decomp. It looks like a 740 to me with that full wrap.

YOUR RIGHT IT A 176 OR 86

 

[leeha]

Direct drive so it's a 1-76