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 prebug emissions system? 
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Joined: Sun Jun 15, 2014 9:17 pm
Posts: 287
Location: Portland, OR.
scooters and mods: 2003 Kymco Bet&Win 250; MRP 300cc kit FAST!!! *NEW* 2001 Yamaha ZUMA, mods to come!!!!
Post prebug emissions system?
Hey everyone. Planning a winter build on my 2001. Just planning on what bearings to use on a new crank, steel cage or composite. The composite ones say they can't exceed 120c so can't be used with catalytic converter. I'm planning on retaining the stock exhaust to maintain sleeper appearance and broad torque for wheelies. Does an '01 have a catalytic converter in the stock exhaust? I've read somewhere that do but can't find any info now. I just need to know if I should cut it open and take the cat out. Also does anyone know why they put the four Allen bolts on the stock exhaust? They don't seem to do anything.

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2001 "Yamaha" Zuma PreBug. MXS Race .55 squish, Polini Evo crank and evo bearings, Malossi Overrange 5.5g rollers, Stage 6 MKII Clutch, malossi 14/42 primary Polini 14/41 secondary 8.9:1, MXS Hyperhace exhaust, Stage 6 intake, VForce 3 reeds, Stage 6 VHST 26mm flat slide (125mj/35sj/50 slide/d44 needle), Malossi MHR inner rotor 28° advance, Nolgy Hotwire, Mallosi RS3 shock.


Mon Nov 03, 2014 10:33 pm
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Joined: Thu Mar 20, 2008 5:27 pm
Posts: 14870
Location: portage wi
scooters and mods: 08 zuma dual headlight tmod rally kit cutom red paint koso mirros red anodized trans bolts
Post Re: prebug emissions system?
There is no smog equipment on zumas before 2008

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2008 zuma dual headlight mod koso mirrors liquid cooled polini corsa kit leo vince zx stage 6 variator rally kit custom red paintFUEL INJECTEDsoon to be 100cc
2008 stella olive custom ported 177 cc kit dechromed ford tear drop tail light alive and breathing and awaiting cosmtic surgery thanks to an trump cager
1985 elite 150 how long can i leave it stock


Tue Nov 04, 2014 6:55 pm
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Bronze Member
Bronze Member

Joined: Sun Jun 15, 2014 9:17 pm
Posts: 287
Location: Portland, OR.
scooters and mods: 2003 Kymco Bet&Win 250; MRP 300cc kit FAST!!! *NEW* 2001 Yamaha ZUMA, mods to come!!!!
Post Re: prebug emissions system?
Thanks!

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2001 "Yamaha" Zuma PreBug. MXS Race .55 squish, Polini Evo crank and evo bearings, Malossi Overrange 5.5g rollers, Stage 6 MKII Clutch, malossi 14/42 primary Polini 14/41 secondary 8.9:1, MXS Hyperhace exhaust, Stage 6 intake, VForce 3 reeds, Stage 6 VHST 26mm flat slide (125mj/35sj/50 slide/d44 needle), Malossi MHR inner rotor 28° advance, Nolgy Hotwire, Mallosi RS3 shock.


Tue Nov 04, 2014 7:43 pm
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