Jog 90 performance crankshafts

[joggybro]

OK guys so I've just ordered a jog 90 engine case,
Been looking around for crankshafts to fit,
I can get the original jog90 crank buy I'm looking for a high performance crankshaft for it.

Has anyone any links?

[AtariGuy]

Apr 6, 2017 6:19:25 GMT -5 joggybro said:

OK guys so I've just ordered a jog 90 engine case,
Been looking around for crankshafts to fit,
I can get the original jog90 crank buy I'm looking for a high performance crankshaft for it.

Has anyone any links?

check on scootertuning.ca and reference the vento triton. Those bits ought to get you into a 90 style crankshaft (aka 12mm pin with large variator splines and large flywheel shaft)

[niz76]

Although they may share some vari parts, the 90cc crankshafts are physically larger and take different bearings than the 49cc/70cc stuff so you won't find 90cc cranks in the Triton/Zip section at scootertuning.ca. Check out the ATV section. That's where the 90 stuff is....

Many here have also used the pretty inexpensive Taiwan stroker crank that can be found in various places on the web. Here's an example: www.aliexpress.com/store/product/Crankshafts-For-YAMAHA-JOG-90CC-High-Performance-scooter-engine-accessories-crank-for-Racing-Made-In/728327_1482820567.html

Keep in mind that the 90cc setups are pretty low revving so the stock cranks really hold up just fine (I'm running a stock Eton crank in my 90cc Adly). Most just upgrade when looking for a longer stroke or if you want to get real crazy and get into the hyper race 90cc+ stuff that's where the real power is! Real $$ too haha.

Here's that Taiwan 90cc stroker crank again at PFS...
www.partsforscooters.com/169-138_crankshaft?sc=38&category=138836

[joggybro]

Look at this on eBay www.ebay.co.uk/itm/262907003145

This one looks like the one u linked me?
Thanks bro

[niz76]

Keep in mind that it's a 'stroker crank'. Has a longer stroke than stock...

[joggybro]

Apr 7, 2017 0:52:13 GMT -5 niz76 said:

Although they may share some vari parts, the 90cc crankshafts are physically larger and take different bearings than the 49cc/70cc stuff so you won't find 90cc cranks in the Triton/Zip section at scootertuning.ca. Check out the ATV section. That's where the 90 stuff is....

Many here have also used the pretty inexpensive Taiwan stroker crank that can be found in various places on the web. Here's an example: www.aliexpress.com/store/product/Crankshafts-For-YAMAHA-JOG-90CC-High-Performance-scooter-engine-accessories-crank-for-Racing-Made-In/728327_1482820567.html

Keep in mind that the 90cc setups are pretty low revving so the stock cranks really hold up just fine (I'm running a stock Eton crank in my 90cc Adly). Most just upgrade when looking for a longer stroke or if you want to get real crazy and get into the hyper race 90cc+ stuff that's where the real power is! Real $$ too haha.

Here's that Taiwan 90cc stroker crank again at PFS...
www.partsforscooters.com/169-138_crankshaft?sc=38&category=138836

Thanks bro could you link me to some high end crankshafts so I can have a look thanks

[90GTVert]

www.g-forcepowersports.com/CRANKSHAFTSMiniQuad-s/3226.htm

You'll need to know what kind of build you want before you choose a crank. The high end cranks are meant for high end cylinders. Varying strokes, conrod lengths, and gudgeon pin sizes don't let them mix and match with just anything. Budget is a big factor here. Huge price difference in the high end ~90cc stuff and the Taiwan crank and 54mm iron bores.

[joggybro]

Apr 7, 2017 6:38:39 GMT -5 90GTVert said:

www.g-forcepowersports.com/CRANKSHAFTSMiniQuad-s/3226.htm

You'll need to know what kind of build you want before you choose a crank. The high end cranks are meant for high end cylinders. Varying strokes, conrod lengths, and gudgeon pin sizes don't let them mix and match with just anything. Budget is a big factor here. Huge price difference in the high end ~90cc stuff and the Taiwan crank and 54mm iron bores.

Going for the 54mm cylinder with a view to at a later date maybe fit the polini big evo 96cc,
I'm guessing the 45mm stroke will fit both cylinders??
ATM I'm just really wanting a full circle high performance crankshaft for 96cc(54mm cylinder)

[90GTVert]

Plan 2 separate setups. I think the Big Evo uses a 13mm pin, 12mm for the Taiwan stuff so you can forget the same crank working with both. If you're gonna spend a small fortune on a Big Evo setup, you don't want a bunch of compromises anyway. Remember a setup like that will need the crank, cylinder, and pipe all matched... plus you should have a race ignition, full CVT setup to keep it revved, bigger carb.... No sense in planning to be on a tight budget.

[paceneedsstides]

I think one of the BIG EVO kits comes with all the stuff you need to convert it but thats BIG MONEY right there

[fugaziiv]

Apr 7, 2017 0:52:13 GMT -5 niz76 said:

Although they may share some vari parts, the 90cc crankshafts are physically larger and take different bearings than the 49cc/70cc stuff so you won't find 90cc cranks in the Triton/Zip section at scootertuning.ca. Check out the ATV section. That's where the 90 stuff is....

Many here have also used the pretty inexpensive Taiwan stroker crank that can be found in various places on the web. Here's an example: www.aliexpress.com/store/product/Crankshafts-For-YAMAHA-JOG-90CC-High-Performance-scooter-engine-accessories-crank-for-Racing-Made-In/728327_1482820567.html

Keep in mind that the 90cc setups are pretty low revving so the stock cranks really hold up just fine (I'm running a stock Eton crank in my 90cc Adly). Most just upgrade when looking for a longer stroke or if you want to get real crazy and get into the hyper race 90cc+ stuff that's where the real power is! Real $$ too haha.

Here's that Taiwan 90cc stroker crank again at PFS...
www.partsforscooters.com/169-138_crankshaft?sc=38&category=138836

Agreed.

[fugaziiv]

Apr 7, 2017 9:13:04 GMT -5 90GTVert said:

Plan 2 separate setups. I think the Big Evo uses a 13mm pin, 12mm for the Taiwan stuff so you can forget the same crank working with both. If you're gonna spend a small fortune on a Big Evo setup, you don't want a bunch of compromises anyway. Remember a setup like that will need the crank, cylinder, and pipe all matched... plus you should have a race ignition, full CVT setup to keep it revved, bigger carb.... No sense in planning to be on a tight budget.

Also really good advice. If you're going to step up to Big Evo and spend that kind of cash, just build that motor out on it's own and do it right.

Compared to Big Evo, maintaining a separate engine built with Taiwanese parts is chump change.


Matt

[pigkut]

I ordered a 44mm stufff stroker and 54mm hoca bbk . I’m having a local scoot shop cut my cases and port match the kit. True jog 100 🤠.
m.ebay.com/itm/Minarelli-90cc-44mm-Crankshaft-ETON-POLARIS-Drr-Apex-Aeon-YAMAHA-JOG-90CC/201594421140?hash=item2eeff6bf94:g:x5MAAOSwnNBXUk2W