Warrior YZ250 Engine Conversion

[dmanabq]

http://youtu.be/7iwqf2ynvy4

 

[Gen1Pat]

Sounds good. You are further along than Mathus! lol

 

[dmanabq]

Still needs tuning lol. But I am getting there. I have gone out twice for long rides and haven't had a serious failure yet.

 

[Mathius]

Sounds good. You are further along than Mathus! lol

Perfection takes time.. lmao

It sounds a bit sluggish on the bottom end.. What are running for a carb?

 

[dmanabq]

Its the stock carb of a 94 yz250. I think the jetting is a little fat but my gearing is off still as well. I was contemplating lowering the needle one notch and seeing where that gets me.

 

[dmanabq]

I can't remember what jets are in the carb but I will investigate soon and see if maybe I am over sized for 6000 feet.

 

[Mathius]

That little 250 would really benefit from some port work, and a bigger carb.
I was also curious what kind of pipe your running?

 

[dmanabq]

Its a stock pipe lol. I am seriously toying with the idea of an FMF system and rebuilding the top end at the same time. Problem is it takes about 4 hours to rebuild the pipe to fit the frame lol. I am having moral issues with cutting and re-welding a new FMF Fatty. I haven't done any research on the 250 motor yet in regards to power improvement but I may soon.

 

[dmanabq]

Okay Mathius nailed it. I dropped the needle one position and wham, no blubbery mid range. This thing moves now lol.