[DOIWANTATHUMPER]

a 2 stroke valve is not even a valve, its a port ..... except for the power valve.... therefore no matter what, the port is always fixed, it does not have an open/close characteristic in itself.... opening and closing is performed by the piston passing over the port at the down stroke to suck in fuel/air and on the compression/exhaust stroke for power and exhausting... repeadatly... thus you have a 2stroke ... 2 seperate strokes for the motor to perform the job...

[DOIWANTATHUMPER]

ha ha ha, that's the funniest thing ive read in a while on here! ever here of the four strokes; intake,compresion, combustion, exhaust. if exhaust and intake happened at the same time it'd be called a 3 stroke.


1)Intake stroke - (intake valves only are open, piston going down drawing fuel/air mixture)
2)Compression & Combustion stroke - (all valves closed, piston rising in cylinder, compressing the fuel/air mixture and the ignition system igniting the mixture)
3)Power Stroke - (all valves closed, The force of the combustion/explosion of fuel/air in small area driving the piston down with extreme force creating power and drive)
4)Exhaust Stroke - (exhaust valves only are open, piston rising to push out exhaust from combustion, at which point the piston rises to its highest point and prepares to go back down and begin its intake stroke) This process continues to follow the exact same cycle, 4 different strokes, thus giving it the name 4-stroke....or 4 cycle engine.....

[Britincali]

if you had the intake valve open during an exhaust stroke it would cause severe failure of the valve train, bend the valve most likely, backfire through the intake, burn the valve seals, backfire through the carb, etc.... big time problem if your floating an intake valve during an exhaust stroke - these cannot be open at the same time.... never....



Its called overlap, look into it :thumbsup:

[kxf433]

thats just over kill

[Britincali]

thats just over kill



No such thing!!!!!


I just slapped in 35 shot jets, we shall see how she holds up at dumont this weekend :eek:

[RedRider38]

Give us some better vids if you can.

[blusmbl]

Have fun with the 14 paddle and the 35 shot on the 500 this weekend. :worthy:

ha ha ha, that's the funniest thing ive read in a while on here! ever here of the four strokes; intake,compresion, combustion, exhaust. if exhaust and intake happened at the same time it'd be called a 3 stroke.


What Brit said. Spend a few minutes of your day in an attempt to understand valve timing and overlap then get back with me. If you've ever rotated a 4 stroke engine over by hand with the cam/valve cover off you might have a shot at figuring this one out. :D Theories can be explained until you're blue in the face, but you'll change your tune in a hurry the first time you see a 2 stroke detroit diesel generator engine with both a turbocharger AND a supercharger attached. Or a turbocharged Banshee, or sled, etc. As long as the turbo is placed past the expansion pipe, it'll work fine.

[Crazyced]

Theories can be explained until you're blue in the face, but you'll change your tune in a hurry the first time you see a 2 stroke detroit diesel generator engine with both a turbocharger AND a supercharger attached....The Detroit 2 stroke engines have exhaust valves just like a 4 stroke. That's why it can build pressure, the exhaust valve independently of the piston.

[Jack22]

It's gonna need a wheelie bar. :D

[Britincali]

The 35 shot was fun as hell but sucked, nothing but vertical the second I hit the switch.

The bike ran tits in the dunes but the NOS was a pain to dial in.

Overall the bike ran great this weekend, I ran 10 gallons of C12 through her and 6lb of nitrous. I was having bad bottle pressure and rich issues, I eventually got it pulling hard with a 28 NOS jet and a 22 Fuel jet. It was all wheelie happy fun and games untill the WOT switch stuck on about 25 ft from the top of competition hill in dumont. After some crazy paniked seconds I pulled the kill cord and ate shit right at the razor. I honestly though I was gonna launch off a 800 foot razor back....


Im changing the wot switch design :censored: .

[Crazyced]

The 35 shot was fun as hell but sucked, nothing but vertical the second I hit the switch.

The bike ran tits in the dunes but the NOS was a pain to dial in.

Overall the bike ran great this weekend, I ran 10 gallons of C12 through her and 6lb of nitrous. I was having bad bottle pressure and rich issues, I eventually got it pulling hard with a 28 NOS jet and a 22 Fuel jet. It was all wheelie happy fun and games untill the WOT switch stuck on about 25 ft from the top of competition hill in dumont. After some crazy paniked seconds I pulled the kill cord and ate shit right at the razor. I honestly though I was gonna launch off a 800 foot razor back....


Im changing the wot switch design :censored: .I assume you're also changing your shorts. :busted:

[Roland69]

dont nitrous bottles have to sit on a 15 deg angle for the siphon tube to work...or is there bottles made to mount any direction for bikes and stuff.

[Britincali]

I took the syphon tube out of the bottle.

[CKTMFLI]

phwoar that thing's off it's head.... excellent work

[Britincali]

The 35 shot did more damage than i originally thought, I pulled the reed cage to check for a broken petal and found this :(

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2762.jpg

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2761.jpg

[Britincali]

30 or so gallons of C12 and 20lb of nitrous later...

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2766.jpg

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2765.jpg



Im gonna save some pennies and then have glen at GSS bore her out and make me another piston...


She wasnt running lean at all...

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2772.jpg

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2769.jpg

[Britincali]

Looks sad rite now....

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2768.jpg

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2767.jpg

[Crazyced]

That's sucks. Hopefully you'll have it right next time.

[DESTO]

Brit make sure you didn't have a air leak @ the base gasket???:busted:

My base went and when i tore her apart had the same small crack going as you have!! Glad i took her apart before she blew completely!!!

Also that is very common with CR 500s

[Britincali]

Also that is very common with CR 500s


Its common with cast pistons not with forged wisecos like I have :banghead:

I dont think the freezing nos hitting a screaming hot intake skirt helps matters.

[08Yamee450]

go to jawbone canyon and try the widowmaker hill climb. CR500s are the only bikes I have every seen make it to the top. Maybe a few 650s but that is about it. Have fun and be safe!

I ride all arnd Red Rock Canyon, Cal City, 395, Randsburg/Johanesburg, Bean Canyon, etc, and have never been to widowmaker. How do you get there?

[ddobson4]

you sir, are insane

[gsrgopedrider247]

my dad used to have a cr500r A LONG time ago! he told me it was scary

[m2r06]

Oh how the mighty have fallen. Sorry to here about that. She'll be back up and running in no time I hope? :thumbsup: :cry:

[bblazer84]

Your one crazy SOB buddy, good luck and hope you got Medical Insurance

[woodsrideradam]

looks sad....how do you think my rm feels.......its been like this sense september
http://i117.photobucket.com/albums/o80/kawasaki4ever/100_2595.jpg

[Britincali]

Did some wrenchin today and got her pretty much done apart from the pipe and intake.

GSS did a bitchin job on the top end for me :D

Studs installed, I chased the the barrel threads with a tap then cleaned 'em out with carb cleaner and compressed air, then wound the studs in as hard as I could pull. I put a stock '89 top end next to it for comparison.


http://img.photobucket.com/albums/v681/britincali/nitrous/100_2814.jpg

Bling piston :lol:

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2815.jpg

At home...

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2816.jpg

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2817.jpg

Where I gave up...

http://img.photobucket.com/albums/v681/britincali/nitrous/100_2818.jpg

[another drz guy]

Dude, your high.










I LOVE IT!!!!!!!!!!!!!!!!!!

[Britincali]

Dude, your high.




Only after wrenching :busted:

[black_n_blue_thumper]

Hey bud, you should put a new swingarm with a cool set of extentions on that thing. Know anyone who would have such a thing?:excuseme: