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 Whats the difference between 1989 and 1999 verticle engine? 
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Scooterologist

Joined: Tue Jul 17, 2012 11:32 am
Posts: 70
Post Whats the difference between 1989 and 1999 verticle engine?
Picked up a 1999 prebug that looks like the motor sat in salt water for awhile ( heavy corrosion ). I have a motor from a 1989 that I want to do a crank up build to. In comparing them the older motor looks a tad different. the newer motor says minarelli inside the case and the rear tranny shaft sticks out a tad more. ( old cover wont fit over it shaft hits). planning on a doing an Athena crank and top end. Does anyone know if there are any other differnces that would cause me any problems with the older motor. thanks


Tue Oct 06, 2015 6:27 am
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Scooterologist

Joined: Tue Jul 17, 2012 11:32 am
Posts: 70
Post Re: Whats the difference between 1989 and 1999 verticle engi
Anyone?


Tue Oct 06, 2015 12:34 pm
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Scooterologist

Joined: Tue Jul 17, 2012 11:32 am
Posts: 70
Post Re: Whats the difference between 1989 and 1999 verticle engi
bump


Thu Oct 08, 2015 11:24 am
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Bronze Member

Joined: Sun Jun 15, 2014 9:17 pm
Posts: 287
Location: Portland, OR.
Post Re: Whats the difference between 1989 and 1999 verticle engi
Hey there, that's interesting the input shaft is longer. You won't have any issues with the crank and kit tho it's all the same.

_________________
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.


Sun Jan 24, 2016 8:57 pm
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Joined: Wed Mar 25, 2015 11:44 pm
Posts: 124
Location: East Bay CA
Post Re: Whats the difference between 1989 and 1999 verticle engi
Yea, I ordered a crank from a 99 pre bug and put it in my 89 prebug no problem. So the gearing is different? Because i want to order gears, but they are listed for a 96-02, will they work on my 89 engine?

_________________
1990 Yamaha Jog CG50-CW50 swap
1992 Yamaha Jog CY50-stock
2000 Honda Elite SR50-72cc Corsa, Arrow, OKO24, Polini vari, 8.4:1
PocketChangeScooterClub
1995 Suzuki Intruder VS800
2014 Yamaha FZ-09


Wed Feb 10, 2016 9:33 pm
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Joined: Sun Jun 15, 2014 9:17 pm
Posts: 287
Location: Portland, OR.
Post Re: Whats the difference between 1989 and 1999 verticle engi
Hey Birdman, send a friend request to Brandon ScooterSwapshop on facebook, hes my buddy in Portland that has an AWESOME online store for Zuma, dio, and other 2t parts. I believe that his prebug is pre 96 and he has fitted gears no problem. Send him a message, he'll know and have many options in stock.

_________________
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.


Wed Feb 10, 2016 10:10 pm
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Joined: Wed Mar 25, 2015 11:44 pm
Posts: 124
Location: East Bay CA
Post Re: Whats the difference between 1989 and 1999 verticle engi
Oh yea!! I dont have FB but i already know Brandon and SSS. I got some things for my Elite from him and a he guided a buddy of mine thru an af16 swap on a spree. Hes good people for sure. Thanks for the info Ill ask him about it to make sure...
Sorry to the OP i didnt mean to thread jack.

_________________
1990 Yamaha Jog CG50-CW50 swap
1992 Yamaha Jog CY50-stock
2000 Honda Elite SR50-72cc Corsa, Arrow, OKO24, Polini vari, 8.4:1
PocketChangeScooterClub
1995 Suzuki Intruder VS800
2014 Yamaha FZ-09


Thu Feb 11, 2016 10:27 pm
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