GY6 A and b case explained 

I can see he was right on time with a response. lol I dislike people that don’t respond to questions that they could help with

Converting to a 180cc uaually means youre using a 63mm piston, you must bore the case block....61mm is biggest you can go without case mods.

@@dmartin925 okay thx Daniel I really learned something today!

+versatec1 Hi Vers! Thank you very much. Unfortunately, I do not know your specific model of scooter. So I can not say for sure. What I can share with you is that modifying scooter cylinder that has fuel injection is very hard to do. When you go with bigger piston, you also have to upgrade the amount of AIR and Gas the scooter uses and have to modify exhaust for new flow rates. Getting fuel injection to add more fuel is difficult to do and requires expensive modifications to the ECU (computer that controls fuel flow rates)... You would need new fuel Maps, possibly a bigger injector, the list goes on and on. Sorry I could not give you exact answer.

+Daniel Martin. im wondering where can i get a case bording big block for a gy6-65mm

A QMB is not a 150cc and I have not seen a 4 valve kit for a QMB (Not saying there isn't, I just haven't seen one). The "QMB" is actually a 139QMB or 1P39QMB... That is an engine stamp describing some of the engine specs... 1 = 1 cylinder 39 = 39mm cylinder Q = Cooling type - Q is Air M = Motorcycle / Moped B = Engine size (B =

+raddddix Thank you for the kind words! Glad ya liked the video. Visit shop.martinmopeds.com ... Were are in the process of uploading our inventory to the net.

Hero Hersey check the gy6 store

+Carlos Villarreal Hit me up at my forum: www.dansgaragetalk.com

i believe the ncy 61mm bbk will fit the gy6 a case with no problem. others like the naraku and taida, those are hit and miss, but it all depends on your case. some gy6 a cases are odd balls from what i read. some could have the 63mm opening, some could have 63.3mm or even 64mm. the only way to find out is to disassemble the top of your engine and measure the cylinder skirt and case opening.

The only difference in a "p" engine, is they have bigger head

😂 I’m with you brother 🫱🏼‍🫲🏾⚠️

Yonghe is a Chinese name

Engines(even these) are high tollerance items. So the answer is nothing bigger than what's in it.

shop.martinmopeds.com

Yes.

+Daniel Martin thanks for the fast response. Im planning to upgrade mine.

On an engine like yours, you can go up to 61mm if you select Taida or NCY. I have in stock the Taida 61mm no bore if you're interested. I also have 58.5mm BBK's in stock (Glixal and Taida)

+Daniel Martin Thanks I'll check that out. I have one more question again. What valve clearances would you recommend on my motor

Hi Martin, is this the one that you recommend to my 125cc gy6, 61mm no bore shop.martinmopeds.com/X06-Taida-GY6-Cylinder-61mm-Big-Bore-Kit-Case-mod-not-required-GY6-01061-w.htm if so I need your response. Tnx

Its an A block

David DeBergh yes. 50cc is max amount without a license and registration. if you go over 50cc it needs to be registered with insurance and you need a license. I know it sucks.

Just to add to this, and make a correction you do not have to hold insurance on any motorcycle in Florida no matter the cylinder size as long as you wear a helmet. I would still carry liability though because you never know what could happen.

Did you get an answer

If I gave you a sandwich, could you get Chris to fart on it?

+ThEoThErGuYz757 Ultimately, If someone is selling a 161cc as a 200cc, then sure, I suppose it is. What I was talking about is intention. These 200cc engines are marketed by the manufacturer that way, they're even sold on mopeds as 200cc's, but they're not. So, when they hit the US market and sellers are provided the false info, I don't think the end seller is misleading people on purpose, as they were also mislead... It does become intentional when a seller is made aware of the fact and they don't change the ad or add a disclaimer... I do not sell these "200cc" engines, I was only pointing out the info errors.

+Daniel Martin i hear what your saying but as someone who would sell an item like that wouldnt you do your own research to make sure everything is what it is suppose go be before advertising something? as for scrappydawg or whatever they know they arent that cc but still sale then as that which is false advertising not saying you per say just stating facts...just cuz something says it does this or that doesnt mean it doesnt that thats when research should be conducted to make sure accurate information is given out

Would it be better to stick with a 150cc for durability than a 157cc?

I'm on a Hiatus for a while and not taking custom orders at this time.... If you need a motor, the cheapest and most reliable is Amazon

Anything specific you're wanting answered?

People will find an old camero or trans-am and drop 20-30,000 into it...for that kind of money, they could buy a brand new one...some would say it doesnt make fiscal sense.... it's more about the love of the project... people get these Chinese scooters and fall in love with it, but they dont fall in love with the performance... that's why they upgrade... they know they could just buy something fast, but they love their scooters and want it to go fast....

Sorry that’s false. Most people buy there scoot because they are cheap and can’t afford a larger bike. They put the standard performance upgrades because they are cheap. Very few people and I mean very few people will drop three grand on an engine for their scooters what’s the point of building and boring 150 cc engine, when for the same amount of money in relatively the same mounting dimensions for 350 or 450 mL engine from a different scooter and have way better performance in better reliability I’ve board many blacks and I’m sorry as thin as you’re making the walls on those oil passages that is a recipe for disaster. Example I have 150 mL GY6 buggy from yerfdog. I did the whole pouring beers and got it up to 180 ccs. Just last year I bit the bullet and bought a wrecked 250cc gy6. And that 250cc GY6 blew the doors off of the 180 and I had significantly better reliability and performance.