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Mcculloch engine debate!!!!

Posted: Thu Nov 07, 2019 4:21 pm
by Matthew denton
So I’m selling my kart with my engine, I have been told it’s a mc101 numerous times. But now I’m told it’s a 91 series. I seem the mcculloch IPL sheet and they both look similar. Is there any definite answer to this? Here’s some pics.

Re: Mcculloch engine debate!!!!

Posted: Thu Nov 07, 2019 4:35 pm
by Mark Loraine
It's no longer a debate, who ever told you it was 101 is either ignorant, or the seller of the engine (or both).
It is a MC91A 100cc but will need a picture of the boost port cover above the flywheel to say for certain. Also the block number indicates this being of the 91 series engine builds. I'm not home now to look up the block number, so someone else can get that confirmed.

A BDC14 carb wasnt used on the 1st MC91 as I recall, but it could have been changed out later.

Re: Mcculloch engine debate!!!!

Posted: Thu Nov 07, 2019 5:03 pm
by Matthew denton
That would be great if u can confirm that serial number for me. I will take a pic of that port u mention also.

Thank you.

Re: Mcculloch engine debate!!!!

Posted: Tue Nov 12, 2019 10:20 pm
by Terry Bentley
All of my 91A motors have that number stamped on the block.

Re: Mcculloch engine debate!!!!

Posted: Fri Nov 22, 2019 8:25 pm
by Scott Kneisel
Here are a pair of 101's, totally different in appearance as well as internals.
Sams 101s 003.jpg

Re: Mcculloch engine debate!!!!

Posted: Sat Nov 23, 2019 9:08 am
by Rob Voska
4 fins above the exhaust port on 100cc engines and 5 fins on 125cc engines. Easy to see in your one picture.

Re: Mcculloch engine debate!!!!

Posted: Tue Dec 17, 2019 9:38 pm
by Laurent Philippin
Exactly that's a 91a first off they never made a 101 with a yellow engine cover plus like the dude with all the 91s & the 101s the physical appearance is different 😉