139qmb big bore kit instructions -
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- čas přidán 3. 07. 2024
- Step one disassembly
Detailed disassembly of 139qmb top end to prepare for big bore kit install.
I'm going to show you in detail how to disassemble and prepare a 139qmb for big bore installation.
In part 2 I will be giving fully detailed install instructions with the #SA88 52mm Big Bore Kit with big valve head.
If you want to maximize the power and speed of your gy6 50cc 139qmb scooter this big bore kit has the largest displacement, largest valves and ports and is the highest quality kit available for the money. - Jak na to + styl
Very informative video ‼️
Can't wait to see more .
Damn bro. Your watching late-night youtube. Install video being edited and posted today.
A tip for the chain tensioner, mount it relaxed on the chain with the chain tensioner and spring still out first. Take a long thin bolt and put it in the chain tensioner hole and gently snap it to the correct tension. Then insert the spring and mount the bolt.
please tell me the maximum speed at 52mm
Most people can expect from 48 to 52. But mid to high fifties are possible with proper gearing, cvt tuning, carb tuning etc. Unfortunately I can't garauntee any specific top speed because everyone's tune and setup will vary. There are too many variables to give a definitive answer.
A 52mm kit like this will approximately double your hp, how you harness that power is what determines top speed.
I have a 47mm maximum speed at the moment 52 miles. variator with a diameter of 106 mm weights 6 g belt does not reach the maximum diameter of 4 mm
Hongling qt8 scooter I'm from Russia and now I'm such a big bore
@@user-gd5lb9de9w you've done some tuning and cvt work! Nice job. How much do you weigh?
@@scooterarmy and tell me another thing I want to install camshaft tuning and crankshaft tuning