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Teddy.Scout
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THIS THREAD IS OVER DUE!!!!!!!!!!!!!!!!!!!!!!!!
Hats off CPR!! (all good reading!!)
Hats off CPR!! (all good reading!!)
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The Kart Engine Thread
- Thread starter cpr
- Start date
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I made a few phone calls this week and managed to get to see the pair of Mc 10's, a few more phone calls and they came home with me.
The Mc 10 has a 2.125" bore like a lot of saws, and uses the same 55123 rings (thick rings) as many of the 80 and 87 cc saws. It is interesting as it has the "external" breaker points like the D-44 and 1-70 family saws.
Dusty from setting on the shelf for a while, but I think they will clean up nicely. Pistons both look good through the exhaust side, could be some fun.
Mark
The Mc 10 has a 2.125" bore like a lot of saws, and uses the same 55123 rings (thick rings) as many of the 80 and 87 cc saws. It is interesting as it has the "external" breaker points like the D-44 and 1-70 family saws.
Dusty from setting on the shelf for a while, but I think they will clean up nicely. Pistons both look good through the exhaust side, could be some fun.
Mark
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Brian13
Addicted to ArboristSite
Real nice find!!! You gonna put those in a saw?
cpr
Addicted to ArboristSite
Way to go Mark! When you get a chance, could you post a pic of the stuffer plate on those from the external side, not the inside. Also, are the cranks machined for keyways on the taper or no?
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Eccentric
Mister Wizard
Nice scores Mark! Do spy a certain McCulloch 77 hiding under a rag in a few of those pics? Can't keep 120cc of McCulloch gear drive muscle under wraps for too long...
That is a 77 hiding under the terry towels Aaron. What was the red sealer you used?
Charles, I will pull the sprockets and see what lurks underneath. I think they are tapered with a key way, the PTO end of the Mc 40 is definitely tapered with a key way (and badly worn). The IPL definitely shows a tapered shaft with a key way.
I will have to dismount one and get a photo from the end.
Brian, I hope to get one of the Mc 10's running and into a D-44 or 1-70 chassis. Next step will be to find one of the handy guys and see about building a pipe for it.
Mark
Charles, I will pull the sprockets and see what lurks underneath. I think they are tapered with a key way, the PTO end of the Mc 40 is definitely tapered with a key way (and badly worn). The IPL definitely shows a tapered shaft with a key way.
I will have to dismount one and get a photo from the end.
Brian, I hope to get one of the Mc 10's running and into a D-44 or 1-70 chassis. Next step will be to find one of the handy guys and see about building a pipe for it.
Mark
cpr
Addicted to ArboristSite
Thanks, Mark. Curious what you find. I have a service bulletin stating the importance of the key and keeper nut in retaining the clutch, yet this 101b I have has no scallop for a key in it. It was built for a fluid clutch in a kart, so that may play a factor. So much to learn... Not sure at this point if I should seek to have one machined into the crank or not worry about it.
Brian13
Addicted to ArboristSite
Looking forward to seeing that!!! I have half an eye open for a Mc10, if I find one before I find the piston I might throw that in the S44a. Cant wait to see what you come up with!!
shawn022
ArboristSite Guru
First off, I don't know anything about Macs let alone kart engines but I was talking to my neighbor awhile back about racing. He and some other neighbors used to be pretty heavy into karting back in the day. He said they ran 101 A's and 101 B's. So i guess my question is whats the differance between the A's and the B's? Thanks
cpr
Addicted to ArboristSite
Not well versed in the variations. There was A, AA, B, C, D, and M.
Eccentric
Mister Wizard
I used the Permatex Hi-Tack stuff that comes in the can with the brush built into the lid. Lee H recomended it. That stuff never really hardens completely. Sort of like rubber cement when it dries. You should be able to get it off pretty easily. Sorry I made a bit of a mess of it. Was in too much of a hurry when I buttoned it back up.
Did you get that NOS carb metering diaphragm that I sent you the link for? The seller was somebody who frequents another saw forum. Somebody got it..........or the listing just ran out and they still have it for sale. I'll PM you their info if you still need one. For all I know, you have a stack of the dang things already...
cpr
Addicted to ArboristSite
Excellent resource, but beyond the "c" block having a bridged exhaust and a couple of other things, I could't find a difference that wouldn't bolt onto any other 101 block (ie the air horn flywheel shroud).
shawn022
ArboristSite Guru
Wow, lots of info there.
CPR, see the photo for the Mc 10 stuffer from outside. Notice there is even the hole for the manual oiler on a saw.
This block was originally stamped 1-70 over 1-80, both X'd out and the Mc 10 stamp on the boss where the lubrimac oiler would have been.
Both have a keyed and tapered shaft but it appears to me to be longer than a saw crank shaft would be from just looking at it. Maybe tonight I will find a clutch to put on there and see how it looks.
Mark
This block was originally stamped 1-70 over 1-80, both X'd out and the Mc 10 stamp on the boss where the lubrimac oiler would have been.
Both have a keyed and tapered shaft but it appears to me to be longer than a saw crank shaft would be from just looking at it. Maybe tonight I will find a clutch to put on there and see how it looks.
Mark
Brian13
Addicted to ArboristSite
There seems to be two different lengths for the kart cranks. Its the ignition side that varies. Not sure witch the MC10 falls into though. The super series has the shorter crank. McCullock Kart's and comments from Steve O'Hara, ,,,,,,,
cpr
Addicted to ArboristSite
Thank you Mark. Crank looks about right for length.
I wanted to see what that stuffer looked like. That one could be drilled for an auto oiler and used in a saw. The one on my 101 won't work because the oiler tank won't mate to it due to the gusseting cast into it. Look at the pics above to see what I mean.
I wanted to see what that stuffer looked like. That one could be drilled for an auto oiler and used in a saw. The one on my 101 won't work because the oiler tank won't mate to it due to the gusseting cast into it. Look at the pics above to see what I mean.
RandyMac
Stiff Member
Gosh, that sounds like work.
This looks like a bolt on.
This looks like a bolt on.
This has inspired me to pull out my old mac 92 kart engine.
