Big Carb Jettings / Jet Sizes Recommendation For Yamaha T135

[erhick28]

try this sir, from your a/f screw, 3 turn as your base line (from close position), then gradually turn the screw clockwise 2 1/4 turn or more turns and notice the rpm increasing while you turning the screw. you need to reach the highest rpm and try to rev your engine until there's no hesitations (pupugak-pugak). after that spark plug reading... hope it help...

thanks sir.. ill try it..

 

[erhick28]

change to bigger pilot jet bro...

thanks sir..

 

[wengSN1PERmx]

Please help also MASTERS. My current set are as follows:
UMA SUPERHEAD (no head works)
62mm UMA Block Forge Piston
30mm UMA Carb (i dunno the jettings)
UMA Quick throttle

1st - 5th gear may sinok po kelangan High Rev lagi. Black po SP, tas every after 3days or 4days, ayaw na mapaandar po kasi basa ung SP. And also, i think their is a problem with my STARTER...cannot start with electric (push) starter (sounds TIK TIK TIK pag pindot ng PUSH Button). Can i just replace the "brush" or do i need to buy new one (UMA STARTER) (but very expensive)

 

[jefplacido]

Please help also MASTERS. My current set are as follows:
UMA SUPERHEAD (no head works)
62mm UMA Block Forge Piston
30mm UMA Carb (i dunno the jettings)
UMA Quick throttle

1st - 5th gear may sinok po kelangan High Rev lagi. Black po SP, tas every after 3days or 4days, ayaw na mapaandar po kasi basa ung SP. And also, i think their is a problem with my STARTER...cannot start with electric (push) starter (sounds TIK TIK TIK pag pindot ng PUSH Button). Can i just replace the "brush" or do i need to buy new one (UMA STARTER) (but very expensive)

bro di tlga gagana push start mo naka 62mm ka AFAIK
need mo uma starter
adjust k ng a/f mixture
try mo 2 turns then adjust2 like bro grix said

 

[jangbest]

please help how to proper tune uma 28mm carb how many turns. my set 57mm, bigvalve pnp, k1cam, vvspring.. when cruising theres a "pupugakpugak" sorry dont know that in english.. but when in full trottle its good..

Uma Carb are hard to fine tune ... AFAIK ...

 

[erhick28]

Uma Carb are hard to fine tune ... AFAIK ...

ok na pres

 

[jangbest]

ok na pres

Good to hear .... mamaw na mamaw na yan!

 

[cubes]

pabulong naman ng jettings mo

ok na pres

jan hehehe bkt kya sa 26mm carb q na nibbbi binabaan q na mga jettings over feed padin black padin xia.. 110/38 ang jettings now. 2 turns A/F need pa ba mag bawas? mga masters?

 

[wengSN1PERmx]

bro di tlga gagana push start mo naka 62mm ka AFAIK
need mo uma starter
adjust k ng a/f mixture
try mo 2 turns then adjust2 like bro grix said

Finally paps! My jettings are 112/30 and the niddle was on the top.about the A/F, i dunno about the burn of the SP, BROWN..pics to follow this weekend again.

 

[JapSpeed]

up

 

[Joe SEVEN]

Got another info:

specs:
60mm 165cc bore kit
open pipe
racing cdi
racing coil

Keihin PE28 Carb
pilot #40 or 42
mainjet #112/115

=============
stock 135cc bore

Keihin PE28 Carb
pilot #38
mainjet #112

Sir,for this stock bore size of mainjet n pilotjet,how much a/f u open?

 

[Ejay]

need help masters

stock bore/stroke, keihin pe28, jvt valve spring, rcdi, 110mj 35pj, air screw 1 1/4 out

i already test it but when i twist 3/4 to full parang kinakapos nalulunod sya lalo na kung low rpm sya! help help

 

[Gerry Jaloro]

need help masters

stock bore/stroke, keihin pe28, jvt valve spring, rcdi, 110mj 35pj, air screw 1 1/4 out

i already test it but when i twist 3/4 to full parang kinakapos nalulunod sya lalo na kung low rpm sya! help help

Plug reading gawin mo bro... kapag maitim rich kung puti lean, dpat rustic brown to light brown...

 

[Joe SEVEN]

U must change yr mainjet to small one size.. Decrease the size one by one like 180-175-170..its very easy

 

[mac kevin]

need help masters

stock bore/stroke, keihin pe28, jvt valve spring, rcdi, 110mj 35pj, air screw 1 1/4 out

i already test it but when i twist 3/4 to full parang kinakapos nalulunod sya lalo na kung low rpm sya! help help

u have problem with the small (pilot) jet only... experiment it

 

[maky]

Need help.
Bakit mc ko purut sa menor na takbo pero kapag taas rev ok na. Gamit ko 120mj 4k engine 20pj stock
Stage 2 gamit ko and stock carb. Wala parin kape na kulay sa SP. White parin kulay

 

[Cerberus]

Any OKO speed carb 28mm pe user here?.. Share your jettings for 160cc..im currently working on mine.. Currently on 45/110.. Still cant achieve perfect burn even idle mode. But the performance is ok and fuel consumption is good too..thanks for those who cn help me..

 

[JapSpeed]

Any OKO speed carb 28mm pe user here?.. Share your jettings for 160cc..im currently working on mine.. Currently on 45/110.. Still cant achieve perfect burn even idle mode. But the performance is ok and fuel consumption is good too..thanks for those who cn help me..

sir if you don't mind.. what's your gas consumption with 160cc?

 

[Cerberus]

sir if you don't mind.. what's your gas consumption with 160cc?

Sir if im not mistaken to my assumptions. My gas consumption wud b e 36-40km per liter.. But im still on tuning because im aspiring to get the perfect burn like stock carb..

 

[Cerberus]

Is OKO black carb 28mm a rebored 26mm?. Because its smaller than a usual 28mm.. thanks..