Me and tippmann98 worked on this project together. I have the air hungry spree. The problem I think is that the jet in my carb is an 80! I ordered carb with a 68 for it from paul. I think that will fix the problem. The spree is running very lean and probably doing some damage to the rings.
My friend has a spree as well. We always ride together. I noticed with my 80 jet it always cost me less at the pump, significantly actually. This is because of how much darn air my spree is sucking in. It is louder than a chopper. My spree eventually began going slower and slower. Probably ring damage due to the excessive air. My compression I think is lower and that is what caused my sluggishness. It has to be something else because There wasn't much carbon so I don't think it was that. My friends spree still runs perfectly, so whatever jet he has is just right. I have since ordered a different engine, cheaper than the rebuilding way, and am getting a new carb for it as well, with a 68 jet. I hope the 68 will be fine, definately better than the 80! I'll keep you posted on how this all goes.
Stick with a # 65 and you won't have a problem. I've gone 68 and it's still way too rich. 80 is hard to believe that it will even run. (Idle fine maybe but at 1/4 throttle or above, it's really getting juiced).
What surprized me was that fuel economy improved. That's not the way that should have worked.
On a 4-stroke, running too rich for too long ruins the piston ring's ability to hold oil and keep the wall lubed. The rich condition will eventually eat the cylinder wall up. I'm guessing that this will hold on 2-stokes too. Also, the additional fuel is not compensated b/c of the way the automatic oiling works, ie you've increase the amount of gas w/o increasing the amount of oil.
Then engine would have to have been running lean though. The amount of air it was intaking was enoromous. I had holes drilled in the air cap. The intake was extremely loud. Even with the big 80 jet there still was so much air it worked ok. It actually ran quite well for about 300 miles. Then later it started getting slower and slower. I think the rings finally withstood all they could.
Haha, Nice. If yo send me some pictures i will post them sometime on my site. Then you can show them on here. It may be a week or so. But i can get them on eventually. (e-mail: zigzags560@gmail.com)
