MacWorth Vintage ATVs has been scanning all the magazines and has created an awesome site. The article you are looking for is from June 1985 3-Wheeling Magazine.
https://www.vintageatvmagazines.com/...gazine-archive
Just Too Addicted
Arm chair racerJust too addicted
MacWorth Vintage ATVs has been scanning all the magazines and has created an awesome site. The article you are looking for is from June 1985 3-Wheeling Magazine.
https://www.vintageatvmagazines.com/...gazine-archive
Power User
The day begins with 3WW
Hopefully these will show up clear enough .
78 atc 90/180cc Dickson Full Suspension
76 ATC90/180cc Nicholson
77 atc 90 Dickson Full Suspension
84 KLT 110/123cc Powroll Racer from 80s
87 atc 125m stock
84 atc 200x Curtis Sparks
84 atc 200x Powroll My race bike from 80's
83 atc70/108cc Powroll blue Xmas Special
81 atc185s HP-ATC full suspension
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Power User
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Thanks very much guys. This is a good thing to bring back from the dead. Those guys watching must have been excited to see which one would perform the best! It looks like about 28 exhausts that were being tested and there were probably a few more. A few years ago I found a NIB "Superflow" that had a long megaphone on it, I had never heard of one before and I decided to keep it. ED- I just read the Dyno itself was also called a Super Flow, funny coincidence. And also kind of weird that only 1 pipe required a size higher main jet, the rest were fine with no air box lid and the stock carb. I think I myself have a tendency to jet a bit too rich when opening airboxes and and better flowing exhausts. I do usually have a cam and a 10:25 or 11:1 piston though. And, as they say, leaner is meaner.
Last edited by Dirtcrasher; 10-20-2025 at 04:01 PM.
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