The Good: Hey, it's all good! As long as you don't watch tv, listen to news, or doom scroll. Life in Mack is good. I have to admit that despite the grind of it all, I really live the life I love and love the life I live and all that kumbyah hippy shit that has got me this far without loosing my marbles or at least all of them. On the righteous straight and narrow path of hot nasty dirty speed I have been able to somehow keep my nose to the grind stone. Ouch, sometimes i get sparks in my eye. But did manage to get some lead out my ass and hook up the distributor on the Coyote and feed the Holly double pumper some petrol. The sawed off header pipes did not disipoint and my dog was not the only one who piddled on the floor from excitement. Damn this capsule ought to be more fun than barrel full of well oiled midget monkeys doing keg stands of Jolt Cola on a marry-go round.
And to the bad: Not so bad but, well shitfuck. What did I expect slapping a four wheeler head onto a dirt bike engine with cam lobes the size of Dolly Parton's hoo-haas and gallon coffee can for a piston. I even filled up the radiators with green stuff I was so optimistic/naive/eager to start the beast... And the kicker stopped dead locked up.... eeeee, I should have measured the piston to valve clearance. So I did. It was nilch, zip, zero, nada....
I did what any self respecting honkey without money would do and I turned my drill press into a mill. And I cut, and I measured again, and I cut, and I measured again, and I cut, and.... I came to rational thought about how the piston's original valve pockets were not wide enough for the +2mm oversized valves, so I cut wider, and than again deeper. And just when I thought I might not have anymore piston left to cut I finally got hit in the head with the apple of reality. My valves were only hitting the piston after a revolution. I had the god damn good for nothing scum sucking TRX four wheeler cam sprocket which has two less teeth than the sweet familiar CRF two wheel cam sprocket. I really should have noticed. Life is learning. Hoping my valves are not bent. They seem to hold pressure fine. And hoping my compression ratio is above barometric pressure. If things progress into combustion of holly rolling happiness than praise be I shall buy a new piston. Another brand new big bore expensive ass piston. And measure clearances. Which finally brings us to the ugly; my favorite. I was just minding my own business when Dylan the bloke who beat me in the CHCA motorcycle points championship once and made me a red plate of his number 1 to hang on my wall sent me a text with a link to a marketplace add. It read: Free Yard Art. Doh! I showed up and they were waiting for my on the curb, actually off of it into the street with the poor old bike loaded vertically onto a dolly like Hannibal Lector. They asked what I intended to do with and did not believe me one bit when I told them I was going to revive the 73 MX250. They had even taken the liberty to weld onto it it's very own angle iron center stand that was perfect for busting open my knuckles while I snapped off rusty bolts breaking it down. "As much as I can with as little as possible" - My life's motto it seems. I got it all down and amazingly the stock bore piston and cylinder look great. After breaking loose the magneto, it turnedover free and clean. I dont think I will even rebuild the conn rod but the left side crank seal surface is not happy. Might have to do what I did on the 76 YZ125 last winter. This one might even be something I have to break my crusty patina pervert habits with and powder coat the frame, get one of those Indian repop tanks, and make all purdy and shit... we will see. I better source a new ignition...
emptied my box of band-aids.
I only had to drill 5 of the 3 bolt heads. Math equations aside I have always wanted a proper pre 74 vintage class racer. Lets go!


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