What's a McCulloch MC-6 motor worth?

[PA Dan]

Are you nuts? Buy it! You could be peeling around behind the house FFS...

Races at the next gtg!

 

[heimannm]

The porting of the kart engines is much different than the porting of the saw engines, not even really close except the 44/55 Series which were real hot rods. $300 for the whole rig should be a good deal, the right vintage kart guy might pay that for the chassis leaving you the engine.

I had a Hellcat aluminum frame with a Mac 6, no clutch; the kind of rig that could get a teenager in trouble...

I have a pair of unmolested Mac 10's and a couple of 101's fit in saw chassis'.



I need to find a different carburetor or two to make the 101 saws run right.

Mark

 

[Scotty Overkill]

The porting of the kart engines is much different than the porting of the saw engines, not even really close except the 44/55 Series which were real hot rods. $300 for the whole rig should be a good deal, the right vintage kart guy might pay that for the chassis leaving you the engine.

I had a Hellcat aluminum frame with a Mac 6, no clutch; the kind of rig that could get a teenager in trouble...

I have a pair of unmolested Mac 10's and a couple of 101's fit in saw chassis'.

View attachment 140297
View attachment 140298
I need to find a different carburetor or two to make the 101 saws run right.

Mark

I see something else I like in that first picture! !

 

[drf256]

I see something else I like in that first picture! !

I’ve run it, and likely will again in 3 weeks.

 

[cus_deluxe]

Those bp-1s are different...

 

[Lee H]

The porting of the kart engines is much different than the porting of the saw engines, not even really close except the 44/55 Series which were real hot rods. $300 for the whole rig should be a good deal, the right vintage kart guy might pay that for the chassis leaving you the engine.

I had a Hellcat aluminum frame with a Mac 6, no clutch; the kind of rig that could get a teenager in trouble...

I have a pair of unmolested Mac 10's and a couple of 101's fit in saw chassis'.

View attachment 140297
View attachment 140298
I need to find a different carburetor or two to make the 101 saws run right.

Mark

Put a Tilly HR race carby on it and you will never mess with those stinkin flatbacks again.

 

[Scotty Overkill]

I’ve run it, and likely will again in 3 weeks.

I have two of them, both ripped down, just gotta do some repairs and find carburetors to get them back up and running. Going to try a different carb for the one saw to see if I can get it running.

The original carburetor seemed like total overkill, and the the vane governor might not be needed if a smaller carb is used. Just some redneck observations that I'm kicking around..

 

[Al Smith]

Put a Tilly HR race carby on it and you will never mess with those stinkin flatbacks again.

--I'll second that motion-----

 

[Lee H]

This is a 101B running the Tillotson HR race carb. Saw runs sweet.

 

[smokey7]

Has anyone ever put one of these cart saws on a dyno? Im curious if they put out the ponys i think they would. Judging by the way they run and pull a long bar i suspect they would put up some good numbers close to if not more then 10-15hp is safe assumption wouldnt you think?

 

[drf256]

Has anyone ever put one of these cart saws on a dyno? Im curious if they put out the ponys i think they would. Judging by the way they run and pull a long bar i suspect they would put up some good numbers close to if not more then 10-15hp is safe assumption wouldnt you think?

The guy that I got my 101b from told me around 16-19hp on gasoline mix and near 30 on nitro.

 

[Lee H]

Stock 12.5 hp at 9000 rpm for a 101

 

[Al Smith]

The ultra lite version was reported to be around 15 HP. If that's accurate or not who really knows ?

 

[Al Smith]

They made some rather huge HL's too .Kevin(cut for fun ) had one on a big Sachs-Dolmar 166 racer that you could drop a golf ball through it .

 

[Scotty Overkill]

So if I wanted to build a badazz Mac, I'd wanna go with a 101?

Lee, I was at the NY GTG in Greenwich and was hoping to get a a chance to run that big saw, but it went kaput before I had a chance.....

A pic I took of you running it when I was there....

 

[Lee H]

It's back together now with another crankshaft.
The Mac 101 is the king of vintage kart motors.
The Mac next to it also has a 101 in it but sitting
in a stock chassis to look unsuspicious.

 

[Al Smith]

--and rather difficult to find for a reasonable price .My buddy Louie who was number two in the nation AKA back in the mid 70's has been on the look out for me for the last several years .He's still got his notes and port maps too .

 

[Lee H]

He must not be looking to hard Al. I have seen many for sale on ebay and
some not to badly priced. The last one I bought was NOS complete with
carb. It was under 6 bills.

 

[Al Smith]

--did I mention I'm a tight wad ----

 

[Al Smith]

I found a link to some of the early days of Mc engines on karts .The second page shows about the same set up as Kenny Burden who was number one at least twice running three Mc 10's .I knew Kenny real well and ran around with his youngest brother whom are both deceased . https://vintagekarts.com/mcstory.htm