Zuma Athena Race 70cc BBK install : Day One building the motor

Zuma Athena Race 70cc BBK install : Day One building the motor
I went into this with a better idea of what I am going to do. I watched a few videos including one with a Zuma JOG motor off of RollingWrench
• Yamaha Zuma 50f / C3 b...
I also did some research with ScooterTunning.Ca and 49ccScoot forums. Great Help. Watch my adventure of a new 2T novice take apart scooter and try to make it faster.
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[@DirtyDangler25]

The multiple gaskets/shims are so that you can adjust cylinder height to get proper squish, transfer port, and exhaust port durations and measurements . To get proper operation and maximum efficiency from these kits, you cannot just bolt and and go.

[@mikethacker8558]

Always put a shop rag in the crankcase cavity so the wrist pin or anything doesn't fall into the crankcase.

[@SmallEngineVelocity]

Today I took a carb off and dropped a nut into the motor. Amen to magnets ! I will do that from now on

[@frankychacho]

Can't wait to hear that thing rip fam

[@SmallEngineVelocity]

Get ready !

[@grayeagle4521]

Good job 2 strokes are nice and easy less parts just do a proper break in for the piston and sleeve so you don’t burn it up.

[@SmallEngineVelocity]

I plan to :) my first instinct is to rip rip and run! Thanks - two strokes are so easy

[@chucknasty8417]

Great video.

[@SmallEngineVelocity]

Thanks :)

[@briantruck2284]

👍

[@johncoscia5258]

No No , Get or make a degree wheel , bolt it to the end of the crankshaft and turn clockwise noting the degrees open the exhaust port is a turn more for the transfers [inlet] same deal . Its not hard but you need to know durations or the degrees for both ports opened which change with more or less base gaskets or as you said shims ,spacers were included . Also B.D.C of the pistol should be level enough to the bottom ports opening . Not enough information by the way from dealers and me so see 90GTVert channel .lol

[@lukeb0319]

Did you have to change the carb or do anything different with the carb like different jets since it would need more fuel for the 70cc?

[@Gawbringer]

Hey mate. Your cylindeer the sport version.. ATHENA racing has double exhaust intake :) nice viddo

[@SmallEngineVelocity]

I was misinformed and thanks :)

[@kevinmcneil3693]

good job

[@raphael_charbonneau]

How did you install the reed valves mine have cracks on the sides and it makes it run bad please awnser i have no idea what to do

[@kevenroy3848]

The o ring gasket are for Athena evolution 70cc

[@shikaivlessing929]

Just ordered this kit for my 09 Zuma! Just curious if you used the stock BPR7HS spark plug or if you used a different size?

[@SmallEngineVelocity]

Stock one for now and runs well with it. Probably could use a hotter plug.

[@RustezeEnduro]

Any updates? how do you like it

[@brayanmuriel6851]

Did you change the carburator? Or kept the original?

[@kawasakifly]

Wondering the same

[@TEAMVISKAT81]

single exhaust port, Athena sport, dual exhaust port Athena racing / evo

[@MattySlimz]

Strange they put the o-ring head gasket in there with no groove in the head...

[@dongerramarco9617]

when you get that much gaskets , the piston must be a sucker of a piston

[@samuelkinsey5430]

Wrist pin bearing

[@chucknasty8417]

I uploaded a video of my ruckus.

[@SmallEngineVelocity]

View and Shared

[@Pmz604]

Regards to the Gclips...was there a particular way they needed to be installed?

[@mtlhomeshots]

kinda

[@2bryant0]

What size of metal shim did you use

[@mikerotch7045]

Are you using the stock crank?

[@RollingWrench]

Sweeeet!!!

[@SmallEngineVelocity]

Thanks : we both released BBK videos today lol

[@samuelkinsey5430]

Do you want to sell it to stroke right I'm looking for a Zoom a two-stroke I want a two-stroke one

[@roywalls5595]

I got quest can you change out timing belt to timing chain? Or new engine 125 cc no belt drive only chain?

[@SmallEngineVelocity]

You Mean the CVT belt in the transmission ?

[@roywalls5595]

@@SmallEngineVelocity yes

[@SmallEngineVelocity]

No, since the belt needs to slide up and down the drive face to change gear ratio. I’m sure there is some creative way to do it but far as I know the answer is no.

[@roywalls5595]

@@SmallEngineVelocity Thanks

[@michaelbuenvenida8473]

hey anyone know if this 2 stroke engine just share crank oil with the transmission oil if anyone can let me know i would appreciate thanks..

[@jeffquinones7532]

how many gaskets used between block and bore? also is athena race better than polini?

[@jencenteno]

I only put the green one, really should never put two gaskets in any area.

[@edgarnunes2026]

What size jets did you used for it

[@Burronster]

Can you send me the link to this kit

[@dannythor2012]

If only doing a bb GET was as simple

[@SmallEngineVelocity]

Right? I was expecting it to be complicated and a ton of measuring. Take off and put on (correctly)

[@jamiebouchard9862]

What’s the best 70cc kit that has the carb intake on the cylinder itself?

[@thewonderfulwizardofcodsaq3472]

Poling corsa

[@thewonderfulwizardofcodsaq3472]

No engine has a direct carb set up it’s always through a reed

[@jamiebouchard9862]

@@thewonderfulwizardofcodsaq3472 any vertical it’s bolted to the cylinder. Horizontal is case reed.

[@thewonderfulwizardofcodsaq3472]

@@jamiebouchard9862 all of my verticals have case reeds

[@jamiebouchard9862]

@@thewonderfulwizardofcodsaq3472 not sure I understand then. Case reed has direct port into the case, such as the horizontal. My minarelli vertical has the flat reed bolted directly onto the cylinder. Both of em. 🤷‍♂️

[@samuelkinsey5430]

Anybody got a two cycle scooter for sale let me know I'm looking to buy one and get speed out of it easier than four stroke I'm cut off the GY6 store I'm trying to get a big block at GY6BGY6 door cut me off it's a long story I'm not gonna get into it

[@irgendwoda2892]

This is Athena 70cc sport not racing

[@SmallEngineVelocity]

Yea my bad :)

[@raph1551]

At first you put the piston the other side

[@edenuccio3690]

More RAUCOUS please

[@SmallEngineVelocity]

e denuccio many projects on the table - there will always be more Ruckus videos

[@samuelkinsey5430]

Find me one man let me know you got my email right there I'm looking for a good cheap two cycle scooter I don't care what kind it