139qmb build gy6 big bore kit install (part 1)

No video

139qmb build gy6 big bore kit install (part 1)

Рет қаралды 4,574

Күн бұрын

part 1 of 139qmb build, 52mm bbk with big valve head. Part 2 will show torque specs and complete build.
Remember to like and subscribe and then head over to ‪@scooterrehab6295‬ to see what hes got cooking.

Пікірлер: 18

@cliffsbackyardgarage834 Жыл бұрын

That's a great kit I have 2 qmb's with that kit.

@KevinHernandez-hz6kj 4 ай бұрын

Hello sir 139 qmb,,but sir in Philippines we call it RUSI GY6

@user-vl6kl1dh1t 8 ай бұрын

Very informative thanks for sharing 👍

@Bluenosedogman 9 ай бұрын

Dope bro i never heard someone say “pause and go support someone else” props. Im doing it now. Im here tho cause i read 52mm….i thought 50mm was the limit

@scooterarmy 9 ай бұрын

I like to support the community.. can't even remember who the shout out was to, but check em out for sure.

@KevinHernandez-hz6kj 4 ай бұрын

I think up to 63mm to 66mm bore up I'm right?

@KevinHernandez-hz6kj 4 ай бұрын

And I think you can change the head into 4 valve GY6

@thundercatt5265 7 ай бұрын

23 mm /intake and 20 mm exhaust valves with bigger intake and exhaust ports ,i just put one on a 50 mm cylinder ... i had to change out the rocker arms, because the former was a 69 mm valve type ,but this one has a 64 mm valve length , it made a difference but drinks way to much gas right now I'm riding 3.5 's, stock clutch , with a vented and drilled clutch bell with a racing varator ,i have the racing clutch but I don't like the higher RPM engagement spring

@scooterarmy 7 ай бұрын

3.5s? What kinda rpms are you pushing

@scooterarmy 7 ай бұрын

Wait.. you talking tires or weights

@angelluna1582 7 ай бұрын

Did you use another cylinder head?

@scooterarmy 7 ай бұрын

Not sure I understand the question? This video including part 2 is replacement of stock Cylinder and head with a larger Cylinder and big valve head. If I recall correctly an a9 cam also.

@scooterrehab6295 Жыл бұрын

So weird hearing my voice in the background 😂

@scooterarmy Жыл бұрын

It was semi unplanned.. but I ran with it.

@scooterarmy Жыл бұрын

Nothing better than building engines on the couch lol

@scooterrehab6295 Жыл бұрын

@scooterarmy thanks for the shout out ‼️

@rallyscoot 7 ай бұрын

A9 cam only for 90cc? Is it recommended for 44MM bore 63cc kit? What the difference between stock cam, A9 cam, A8 cam , sport and racing? A9 cam is sport or racing curve?

@KevinHernandez-hz6kj 4 ай бұрын

28/24 BV?