Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: bad72ss on October 24, 2012, 07:24:03 PM

Title: YZ360 biuld !!!!!
Post by: bad72ss on October 24, 2012, 07:24:03 PM
 ive been posting this biuld on thumper talk . but i know i should be posting it here . so ill try to get everyone up dated.

 i have a 1991 yz250 engine with a Ohlins 360 big bore kit . im installing a wr trans and putting the whole thing in an 05 and newer two stroke frame.

here im fitting the 360 into the frame to see what need to be done to make it work .












here the frame has been welded and i have some yellow plastic on it . engine fits nice but it very close to the tank. using a bolt insted of one of the studs will fix that .



here is some art work i did . i really want this to have a 1970's yz360 look



Title: YZ360 biuld !!!!!
Post by: bad72ss on October 24, 2012, 07:50:03 PM
this is the look im after . 70's yz360 meets early 80's yz meets Ohlins 360.





Title: YZ360 biuld !!!!!
Post by: cnrcpla on October 24, 2012, 10:23:02 PM
That's awesome  :o I have always wanted to see a 90's engine in a modern chassis. How difficult was the engine mount switching to get the 91' to fit?
Title: YZ360 biuld !!!!!
Post by: bad72ss on October 25, 2012, 06:20:34 AM
 had to have the steal sleaves that go into the back of the block opened up to fit the larger swing arm bolt. moved the lower mounts. the hard part was the front mounts. its very tight . when i set the engine i set it for the 94 pipe to fit.
Title: YZ360 biuld !!!!!
Post by: bad72ss on October 25, 2012, 06:23:04 AM
Title: YZ360 biuld !!!!!
Post by: TMKIWI on October 25, 2012, 08:41:36 AM
Looking good. I love Yellow YZ's. 8)
Title: YZ360 biuld !!!!!
Post by: bad72ss on October 26, 2012, 06:51:38 AM




Title: YZ360 biuld !!!!!
Post by: cnrcpla on October 26, 2012, 07:41:32 PM
That's going to look sick! Can't wait to see it finished.  Nice to see someone else with a dyno racing ports pipe too hahaha, I haven't seen many of those around on motorcycles.
Title: YZ360 biuld !!!!!
Post by: gpnewhouse7 on October 26, 2012, 10:37:23 PM
 :o NICE bike!
Title: YZ360 biuld !!!!!
Post by: motoxr377 on October 27, 2012, 05:42:41 AM
Very exciting! Nice Taste.

Did anyone ever see that article a year or two back where (Dirt Bike Magazine?) tested a YZ250 with a 380sx engine?  Reminds me of this.  Awesome stuff.
Title: YZ360 biuld !!!!!
Post by: gpnewhouse7 on October 28, 2012, 08:48:24 AM
Quote from: motoxr377 on October 27, 2012, 12:42:41 PM
Very exciting! Nice Taste.

Did anyone ever see that article a year or two back where (Dirt Bike Magazine?) tested a YZ250 with a 380sx engine?  Reminds me of this.  Awesome stuff.

Can you find a link to that? It sounds awesome.
Title: YZ360 biuld !!!!!
Post by: evo550 on November 16, 2012, 02:00:25 AM
There's a company on ebay doing these at the moment, except they are putting them into the 450 frame.
$8500 ride away.
Title: YZ360 biuld !!!!!
Post by: bad72ss on November 26, 2012, 04:10:10 PM
Title: YZ360 biuld !!!!!
Post by: scotty dog on December 07, 2012, 11:12:30 AM
This is really cool, gunna look real sweet, I bet it will go awesome!! Nice work ;)
Title: YZ360 biuld !!!!!
Post by: Coop on December 07, 2012, 01:40:06 PM
Beauty, looking forward to seeing it finished!
Title: YZ360 biuld !!!!!
Post by: SachsGS on December 07, 2012, 04:10:42 PM
You say you are using the wr trans., are you going to use lighting coils and lights as well?
Title: YZ360 biuld !!!!!
Post by: motoxr377 on December 07, 2012, 09:24:26 PM
Quote from: gpnewhouse7 on October 28, 2012, 03:48:24 PM
Quote from: motoxr377 on October 27, 2012, 12:42:41 PM
Very exciting! Nice Taste.

Did anyone ever see that article a year or two back where (Dirt Bike Magazine?) tested a YZ250 with a 380sx engine?  Reminds me of this.  Awesome stuff.

Can you find a link to that? It sounds awesome.

I can't. I've been looking everywhere for it since I read it in Afghanistan.
Title: YZ360 biuld !!!!!
Post by: Stusmoke on December 08, 2012, 11:03:01 PM
This is awesome. Thoroughly awesome. I'll be watching it closely.
Title: YZ360 biuld !!!!!
Post by: DEANSFASTWAY on December 25, 2012, 06:30:13 PM
Ive got a brand new piston for this cylinder and some spacer plates and gaskets etc Had 2 of these bikes in the mid 90s they  were very fast. let me know if you wanna buy the parts  for cheeep . I used Noleen pipes back then  If you can get some from Clark Jones its well worth it  the stock 250 pipe will work but she just doesnt rev as well also the silencer core is a bit larger so it flows . Dyno might  be able to set you up though.Make sure to reset your timing as the longer rod kit wants more lead timing. we used stock reed cages  with active reeds but built reed stuffers out of epoxy to fill in the massive airspace .eventually we tried rad valves seemed too restrictive unless we opened them up a bit. wish i had that bike back actually.