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ART is the Japanese mfg - Pro-x is a distributor not a manufacturer

If I had a basement I’d keep it!

For sale - Everyoung climber Absolutely the best off ski training tool ever! Especially if your racing or competing. This is the #1 exercise tool racers used in the 90’s & 00’s and I’m sure some today still use it. No time or room anymore (old now and I try to ride in free time). The...

I figured with porting and other mods at least he would have rev limit delete

Get rid of that water box or sleeve the stinger down. Your rpm is horrible for anything other than a stock 61x or the ski is way over propped #1 with the right setup you can spin 7600+ and go way over 60 with a stock water box under 800cc #2 #1killer of top end performance is over prop or lack...

Ok. Maybe a better way (layman’s) to say what I think the data suggest is. For a given displacement (cc) (class rules) a square bore produces best results. The point would end when piston speeds get to high for the length of stroke for a large displacement. The port windows can flow...

I know near the end of MotoGP two stroke era all the 125/250 and 500 motors were square. Most 125’s are 54/54 today. I read the SAE paper Honda did after the end of the era and the data suggest most metrics (BMEP) the square bore produced the best results. I think every mfg that competed...

For us old guys - 1992-1997 mod class was 785cc max when 8mm Lamey was popular for SJ it was 76mm stroke and Kawasaki 80mm pistons modified by RD for first bore. (I looked at some old notes)

Wasn’t the mod rule 785cc? 81x76. 783cc was max. Then superstock went 800. It’s been 24 years since Mod Class so maybe my memory has made an error?

Does show much on the bottom. I can’t image an 08’ with OVP and 24” tubes.

What about on bottom? Flush with bottom bolt? Pics from normal pole look lower

I wish they sold 28 or 30” tubes for racers. With OVP it’s short!!!

Billet lightweight doesn’t. I estimated based on normal pole

What is the minimum engagement of the RRP carb tubes into the billet lite pole? Some reference point like end of 3rd bolt or 1/2 beyond. Something like that the instructions don’t address! RRP pole instructions are weak! I even got some bolts and spacers I have no idea what they are for...

ADA does this so everyone can buy 35’s and say the run pump gas on 180psi or so. LOL They don’t want everyone calling with melted or damage parts. Almost all racers of the day (98-03) did not use ADA off the shelf head/domes

HBTU!!!

Looking to purchase Yamaha (WPP) head like Picture. Cast that accepts domes Red Yamaha preferred but WPP is ok Please PM

That’s the tool that thought me 760 ring gears spin. Welded both because both spun way too easy

Since mine are spinning at probably 50-75ft lbs. I’m thinking 3 welds 120 apart. Is that what has been done?

How many of you are welding the ring gears on your 760 oem flywheel? (Especially those lightened) I have 2 760 oem flywheels and both of them turned the flywheel while the cold fusion gear lock was in place. I can’t be the only one with issues with all these zeeltronic 760 conversions...