why dont they make them anymore?

[2stroke]

I dunno. I rode an F7 (also a 175 rotary valve) for a while way back when, and it wasnt much on power, but it was dead stock.

Ive never ridden a modern 250 four, but as for the KE, you can tune the heck out of those old rotary valve motors. (pipe, jets, porting, ground out disc, larger carb and perhaps a skunk works ram tuned intake manifold.LOL...good luck finding that one.) with the right mods, I bet the 175 would not be embarrassed.

Anyhow, its a familiar argument for me. Ive been saying for years that my old rotary valve Kaw could keep up with just about anything on a fire road. HEAVILY modified 350cc F9. Its a beastly tank, but its got some serious grunt!

 

[CommandoRoadster]

2stroke-
Please be careful about using the "G" word around schmanman! I worried he's going to break out a grinder,and go to work on his disc.With no template,and without the correct expansion chamber,porting,and intake,his bike would be,as we say in the Brit bike world,"done & dusted.:yikes:

Those Bighorns were surely Torque Monsters! :cool: They actually handled pretty decent too,once you got some Konis on the back,and a Trickit,spings,and a brace on the forks.In my opinion they were the closest thing Japan had to a real dirt bike,until the YZs and Elsies came along. :nod:

It's a shame there is a whole generation of dirt bikers coming up,who will never know the unequaled rush of riding a big bore two stroke :(

Schmanman-
You should be able to get a universal spark arrestor/muffler,that you can have welded on to the end of your pipe.It won't make your bike any slower.I promise. But it will go a long way toward keeping dirt bikes from being banned in your area! :laugh:
Cheers!
Bruce

 

[schmanman]

ok, thanks.

you dont have to worry, If I ever do anything to the rotary valve (which I highly HIGHLY doubt) I will find a template.
would I really need to get a different expansion chamber?

 

[yota]

The Husky in the middle has the factory aftermarket 175 kit.
http://i137.photobucket.com/albums/q201/devrep/czhuskymaico.jpg

 

[2 strokes for life]

I found out today that my bike makes 20HP stock. So with my modds i might be pumping out 25 or so. Thats not bad for a light trail bike that is almost 30 years old.

yota, the link seems to not want to work for me.

 

[yota]

 

[2 strokes for life]

Thanks, it looks good.

 

[schmanman]

cool.

putting a new set of rings & gaskets on my top end next week.

 

[2 strokes for life]

schmanman, i am finishing putting in a new top end this weekend too. Cant wait to ride all of spring break. I plan on putting stiffer springs in it the weekend after.

 

[schmanman]

lucky! I'm kinda short on cash right now, I'm gonna buy a newer 250 2-stroke this summer.

did you know atk (an american company) makes a 700 cc 2-stroke? damn......

 

[pryor]

YOTA cool CZ!! :)

 

[2 strokes for life]

schmanman, yeah i did. They also make a fule injected 450.

 

[schmanman]

can you imagine the power that thing has! geez....

 

[john221ex]

2stroke: I had an F7 (?) 250 which, though it was a bit of a pig was really pretty fast for the time. Unfortunately, I found it was faster than it's brakes while headed toward the edge of a gravel pit! I've never faded brakes on a motorcycle, before, or since.

John
Baltimore

 

[CommandoRoadster]

I don't think anybody actually owns one of those ATK 700s.I did a web search looking for a test,and couldn't find one.I also went on an ATK owners forum,and although there were people asking questions about them,no one was giving any answers. ATK has priced them at $10,000, and that's just a hell of a lot of jack for a dirt bike.Plus,they are kickstart only,and I'm sure that scares a lot of people away.Big bore 2 strokes are no fun when they snap back at you! :yikes: They call that thing the"Intimidator" I'd say the name fits. I'd love to ride one.It's got to be a rocket :laugh:

Cheers!
Bruce

 

[schmanman]

yeah, I'm pretty curious about it too.

wonder what the top speed is?

 

[chicoman]

In the early 80's Maico made a 750cc 2stroke dirtbike. see superhunky.com for the article.
http://www.superhunky.com/nov00rsMaico760.html

 

[schmanman]

wow....

I'm guessing that new atk is putting out more hp, though.