Eric, You did not mention the idle control screw setting in your description of the prep you did to the carb. For that carb, the correct ...   Sun Sep 20th, 2020 08:05 am

I may have what you are looking for. contact me via email for more info Steve O'Hara steveohara (at) msn.com ...   Fri Sep 4th, 2020 07:30 am

Good to know.... if I need something else I dont have I will get in touch. Thanks Steve ...   Wed Jul 29th, 2020 06:08 am

Found one. ...   Tue Jul 28th, 2020 05:17 pm

Anyone have a NOS Mc30 piston at .005 over? I could also use the 40/45/90 version as well if no 30 is available. The difference is ...   Sat Jul 25th, 2020 11:03 pm

what kind of carb are you planning to use it on? Steve O'Hara ...   Fri Jul 3rd, 2020 04:56 am

Both chassis are pretty close to original so they would make excellent restoration projects and both are very popular and desirable with the vintage karters. ...   Thu May 28th, 2020 06:42 am

Hi Stan, FYI... your block is a Mc91B1 replacement block. 92 blocks use a recessed head gasket. I never saw a complete 91B1 from the factory ...   Tue Dec 24th, 2019 07:22 am

Gary, Sadly the vintage karting world has a few members that make their living taking advantage of uninformed people that come to forums like this asking ...   Fri Jul 26th, 2019 12:18 am

That hub is used on the oil bath version of the clutch. The bearing in the aluminum cover rides on the OD of the side ...   Tue May 28th, 2019 11:31 pm

Guys, Slippy pipes have been tried many times on sprint tracks without success. They are only effective on long road racing tracks that require a very ...   Thu Mar 29th, 2018 06:09 am

Doug, You pretty much nailed it. A slippy pipe has an internal, movable convergent (rear) cone with the stinger attached. The big end of the cone ...   Wed Mar 28th, 2018 07:18 am

yep, the 120 header and that pipe would be the correct configuration for the LP1 chassis. The internal rear cone would be operated by a ...   Mon Mar 26th, 2018 01:27 am

look at this ebay auction.... 272509172244 It is the hot ticket for the mac on the road race tracks ...   Mon Mar 26th, 2018 12:45 am

No that S1 pipe is a POS! Rear cone is much too steep. A slippy pipe is a much better opotion for the Mac. How does the motor ...   Mon Mar 26th, 2018 12:40 am

I have one of the self adjusting, black anodized billet Invader calipers with the large pads I can set you up with. Used but very nice ...   Mon Mar 26th, 2018 12:02 am

.035 works well. Will you be using an expansion chamber or simple header? If its an expansion chamber which make and model? Steve O'hara ...   Sun Mar 25th, 2018 11:56 pm

BTW... don't try to run it on 100% methanol/oil with a the stock carb.... very hard to make that work. If you are running the ...   Sun Mar 25th, 2018 04:13 am

Best plug for alky in the 91 series is the Autolite (Motorcraft) AE901. The are hard to find but the Autolite 411 is a suitable ...   Sun Mar 25th, 2018 04:11 am

Searching for Komet K 35 pistons in larger sizes than originally made. Need pistons that are in the 56.1 to 56.5mm size range. The pistons must be ...   Mon Sep 18th, 2017 06:03 am