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SO i got a 87' Spree
Posted: Tue May 01, 2007 2:06 pm
by jmmcool
So i got a 87 Spree, i wanna speed her up a bit. right now, its got a 80cc Dirtbike muffler on it yes i kno, wierd, but it seems to be about right she goes about 32. But what Things can i do to speed her up to a good steady 35 at least, maybe more any help would be nice, i've been readin all the stuff on here, still would like advice thanks!
Posted: Tue May 01, 2007 5:47 pm
by jmmcool
ANyone!
Posted: Tue May 01, 2007 5:57 pm
by Streetglow
pulley mod, but you'll loose a lot of low end.
Posted: Tue May 01, 2007 8:02 pm
by Kenny_McCormic
Posted: Wed May 02, 2007 3:39 am
by badspree
Shave .02 off head, advance the timing, larger main jet, adjust pilot needle circlip, free flow air filter. After all that's done do the pulley mod, and you won't lose any low end.
Use a 4 in beltsander to shave the head, need new headgasket $5.00
Pull the ignition pickup from behind the fan, oval the holes to the left, reinstall. Free
Drill out main jet to about .80 mm (only with k&n style air filter)Free, may have to buy a small * bit. This size can change depending on elevation, so you might want to start off at .76mm and work your way up.
Move pilot needle circlip up in position, mine is second from top, higher up is richer, you will have to play with this too. (this is underneith where the throttle cable goes into the carb) Free
Install k&n style air filter about $7.00 - $15.00 at any auto parts store
Pulley mod....Free
After all of this you should see 35-40 mph, depending on the condition of your motor, and how dead on you get your jetting...do plug chops!!!
Mine can hit about 42 mph if I have enought distance without braking (and no wind), and I weight 220lbs. It averages around 37-38 no problem, this is on a 85, a 87 should be a little faster.
Posted: Thu May 03, 2007 8:53 pm
by gingerbreadman
______________dio motor conversion. thats all i got to say.
Posted: Sun May 06, 2007 1:56 am
by SLiMeX
badspree wrote:Shave .02 off head, advance the timing, larger main jet, adjust pilot needle circlip, free flow air filter. After all that's done do the pulley mod, and you won't lose any low end.
Use a 4 in beltsander to shave the head, need new headgasket $5.00
Pull the ignition pickup from behind the fan, oval the holes to the left, reinstall. Free
Drill out main jet to about .80 mm (only with k&n style air filter)Free, may have to buy a small * bit. This size can change depending on elevation, so you might want to start off at .76mm and work your way up.
Move pilot needle circlip up in position, mine is second from top, higher up is richer, you will have to play with this too. (this is underneith where the throttle cable goes into the carb) Free
Install k&n style air filter about $7.00 - $15.00 at any auto parts store
Pulley mod....Free
After all of this you should see 35-40 mph, depending on the condition of your motor, and how dead on you get your jetting...do plug chops!!!
Mine can hit about 42 mph if I have enought distance without braking (and no wind), and I weight 220lbs. It averages around 37-38 no problem, this is on a 85, a 87 should be a little faster.
My '86 Spree goes 26mph, how simple are these modifications to do, and how long will they take? I was reading that drilling the exhaust before the "baffles" (?) will give you 2-5? more mph, which I would love to do, but there aren't any pictures anywhere, I dont want to screw it up...