mcculloch mc2

[Gary Wlodarsky]

Scott ....
God I remember seeing that advertisemnt back in the day, convinced my dad we needed a new Mac 7....he was easy...we got two....he wanted to win as much(maybe more) than me....


if you got one or two laying around for 99.95 I'll take em''....

I never understiood why they did the Mac 2....just lame....yeah it beat Clintons but??????....

different subject how do you tell the diff.. between a 450 saw motor and a 49.....

Gary

[Scott Kneisel]

Gary,
The easiest way to tell is by the numbers stamped on the back side of the block.
The actual Mc49's are numbered 62481, some early 49's actually used the 250 saw blocks.
Attached is a comparison between the 250 early and late blocks.

Mac 250 Saw Block Comparison.pdf

(354.1 KiB) Downloaded 517 times

As for other "49 saw block clones" being used now in the class, here is the line up:

"Super" 250 - 87cc
300 series - 87cc
400 series - 87cc
450 -90cc

It would be hard to "police" this and cubic inch usually wins out, especially when the real Mc49 is 80cc.
A lot of guys are sticking with the actual Mc49 block and seeing what they can get out of it. I like that challenge and an 80cc engine can be pretty hot if the right stuff is done to it.

I understand that Ron Booth is only going to let actual Mc49's run in the class at Springfield. I and a bunch of other guys are anxious to see how that works out.

Hope this helps,
Scott

[ted johnson]

Gary, you had to be there. The national clubs were pushing bushing at the time. Lots of places had strict rules that juniors could not run needle bearing engines, and the national magazines were backing the premise. Lots of people were afraid of kids getting hurt, and legislation being passed to prohibit karting. Insurance was also going higher for the tracks. The juniors were having fits for being forced to run Clintons and AH 51 PP's, so PP came out with their hot loop scavenged bushing '58, Mac had the Mc2 and West Bend did the 580 bushing. Jack Canady had a PP '58 bushing at TBO, and it ran great. My pal Charlie's boss, Howard Wyatt (Wyatt Enterprises, Cocoa, FL) had an Mc2 that would embarass lots of good running Mc6's and Mc7's, though that fact seemed to defeat the original purpose of the bushing class!

[Scott Kneisel]

My apologies,
I meant Paul Booth runs the Springfield event. I always get his name mixed up with my HS friend Ron Booth.
Thanks Dick.

[Jeff Campbell]

..don't forget there are many Mac IPL docs over on the Mac engine page... including the original MC2 IPL and the revised MCR version of the MC2 IPL.

[Gary Wlodarsky]

Scott...thanks for the info...I figured the stamped numbers but I was wondering about any ovious visual differences....but thanks...and I agree..80cc means 80 cc.....

Ted....I was there.......... we always ran Ohio and lower MI...remember ,,,back in the early 60s travel was not as easy as today......we ran 5s,6s and 7s and never had a 2 come even close to our times...back then the IKF Super Jr class was as fast as anything on the tracks.......no weight restrictions,,,,and go fast motors....what a great combo...

damn I wish I still 75 pounds...LOL

Gary

[Jeff Campbell]

Gary, you had to be there. The national clubs were pushing bushing at the time. Lots of places had strict rules that juniors could not run needle bearing engines, and the national magazines were backing the premise. Lots of people were afraid of kids getting hurt, and legislation being passed to prohibit karting. Insurance was also going higher for the tracks. The juniors were having fits for being forced to run Clintons and AH 51 PP's, so PP came out with their hot loop scavenged bushing '58, Mac had the Mc2 and West Bend did the 580 bushing. Jack Canady had a PP '58 bushing at TBO, and it ran great. My pal Charlie's boss, Howard Wyatt (Wyatt Enterprises, Cocoa, FL) had an Mc2 that would embarass lots of good running Mc6's and Mc7's, though that fact seemed to defeat the original purpose of the bushing class!

Ted - that makes sense. I guess since the low power Clinton motor was available at the time, the idea of pushing juniors in the direction of a low cost bushing engine made sense .. but then everyone found out that this didn't work to limit power since they were allowing 6.1 cube engines and it was too easy to cheat by popping a needle bearing back in the lower con-rod. Then the direction changed to lower displacement motors for Juniors ... the 4.9 cube MC49, and the bushing class idea went away quickly.

Jeff