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-   -   Two-Stroke dirtbikes question (https://www.offshoreonly.com/forums/trucks-trailers-transportation/351430-two-stroke-dirtbikes-question.html)

midwest272 01-02-2018 09:41 PM

Back in the late seventies my RD350 would stay out front of the 900 kaw till about 60 then get smoked .......the good ole days

Still miss my 310R cross county 4 wheeler , light and decent torque

phragle 01-02-2018 11:40 PM

I loved racing 2 strokes.... /my favorite chunk of wood has a plaque on it that says "1st place Baja 1000" lol

Kelly O 01-03-2018 06:23 AM

Threads like these prove that we're all here because we're not "all there".
So many great memories inspired by the names mentioned here. I used to build hand coned two stroke exhausts for everything from MX, ATV, shifter carts, sleds, even the hotsaw chainsaws.
Six years through high school and into college with many late nights on the dyno and field testing products. Of course, all the money earned was spent on racing MX in order to feed an adrenaline addiction.
Seems like Rossini racing used to sponsor Ty Wallace in the late 80's, fierce competitor.
I'll run race gas and Castor oil in my two stroke RC boat just to get a fix for my two stroke addiction.......

mountie 01-03-2018 08:51 AM


Originally Posted by seafordguy (Post 4602574)
That seems like a LOT of bike!!!!

Seafordguy, I sent you a PM. [img]20170408_143456.jpg[/img]

payuppsucker 01-03-2018 09:14 AM


Originally Posted by Interceptor (Post 4601933)
Once upon a time long long ago a CZ taught me how to ride 2 strokes. Moved to Spanish stuff later, OSSA. The lurking monster was MAICO.

I had forgot about MAIKO. I rode a 72 Suzuki 750 when I was in high school and a few years after. It would smoke a Kawasaki 900.............up to around 80 mph. https://www.offshoreonly.com/forums/...ons/icon10.gif

Tiki Joe 01-03-2018 09:26 AM


Originally Posted by hblair (Post 4602609)
It had port work, stroker kit and I think larger bores, I can’t remember I’d have to go to the rz350 forum and read what I did lol. They are fun old bikes but the 4 strokes are stronger on the top end. Newer 4 strokes are stronger everywhere. The rz’s were pretty strong up til like 80mph. Accelerating hard thru the gears they sound so sweet. Everybody looks to see what that is coming up the road! Check out this guys video. https://youtu.be/z5h2fOr6mto
Theres a guy over in Cullman who has an rz500, they are super exotic 80’s 2 stroke race bikes. Really cool.

Quoting you so the Video pops up.....and because I had an RZ350 about 25 years ago....ported heads and some other stuff done to it....wicked quick (up to about 80)...only when she ran....she was a bit finicky to say the least!!

F-2 Speedy 01-03-2018 10:21 AM

A good friend back in the day had a single 500cc Bultaco ?.....maybe a 450...anyway that thing would cut a rut you could lay cable in.....lol Monsta

seafordguy 01-04-2018 06:20 AM


Originally Posted by mountie (Post 4602666)
Seafordguy, I sent you a PM. [img]20170408_143456.jpg[/img]

thanks! Will do if I can't quite crack it. I'm waiting for a break in the weather to try it under conditions I would actually ride in. I figure there is no use chasing it when the high is 24 because I'm never going to ride if it's below 50 so I'm waiting on the weather to come back around. 6+ inches of snow today - kids are off school and I am guessing we are going four wheeling in the snow......

Bad Ass TA WS6 01-04-2018 08:24 PM


Originally Posted by hblair (Post 4602602)
I know what you mean Keith about being scared of the power. 😬 good times. You guys ever mess around with old 2 stroke street bikes. I had this a few years ago. 84 rz350, had the banshee motor with electric power valves. It was a lot of fun too.

Attachment 574007

Hell yeah! I have an 84 RZ350 as well!

Here is an old but good post Seaford. KDXRIDER.NET ? View topic - Jetting Guide

I agree with above about air leakage/pressure testing to ensure there are no leaks since it was just apart. I check all of mine when I have the carbs off, it is simple and crucial on a 2stroke

dbkski 01-14-2018 03:50 AM


Originally Posted by Interceptor (Post 4601933)
Once upon a time long long ago a CZ taught me how to ride 2 strokes. Moved to Spanish stuff later, OSSA. The lurking monster was MAICO.


Originally Posted by payuppsucker (Post 4602669)


I'll just leave this here.


https://i.imgur.com/17Don3p.jpg


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