Bore 62mm And 65mm Upgrades

[n3Xuz-Classic]

Newbie questions here:
What are the mandatory upgrades when upgrading to an aftermarket bore?
-62mm Uma/ other brands?
-65mm Uma?
-Does it require any type of superhead from Uma Racing to go with their bores?
Thanks for the expert recommendations and answers!

 

[sixty-thirty]

I have a friend who uses 62 block with vixion cam with Uma exhaust .. Lots of torque.

 

[n3Xuz-Classic]

I have a friend who uses 62 block with vixion cam with Uma exhaust .. Lots of torque.

Does the vixion cams have lots of vibration too?
Im planning in upgrading to CMS cams.

 

[sixty-thirty]

Does the vixion cams have lots of vibration too?
Im planning in upgrading to CMS cams.

No its very daily usable... Fuel consumption is also good

 

[JohnMX]

Can i still use my stock head for 62mm bore? I'm having a dilemma if it will be compatible or not. Thank you

 

[sixty-thirty]

Yes can use. My friend use 62mm with stock head big cam for daily. Still going strong.

 

[JohnMX]

Yes can use. My friend use 62mm with stock head big cam for daily. Still going strong.

Thanks sir. I've read so much about it and been skeptical. Thank you for this

 

[khiemnguyen]

Engine spec:
Bore: ceramic 65mm
Stroke: stock
Valve: 25x22
Camshaft: 5.8mm hi-duration cam
Carburetor: Keihin PWK33
Exhaust: leovince
Not recommended for daily use cause carburetor spec

 

[snipermxmalayaklan]

Can i still use my stock head for 62mm bore? I'm having a dilemma if it will be compatible or not. Thank you

should modify your head by trusted mechanic where he port it according to your 62mm modification. btw mine is 62 as well with ported stock head.

 

[JR232000]

question po. yung 62mm po ba ng UMA kailangan po ba ng Superhead or compatible naman po siya sa Stock Head ng MX 135 po? Salamat po sa magrereply po