valves at .005??

[china boy788]

hey, im in need of doing valves on my 125,, will .005 on intake be to big??? .005 is the smallest feeler gauge i have?

 

[DvDRip]

nah it should be fine

 

[china boy788]

would i need to make the exhust valve biger then too????? like .006 or will it be ok at .005 too??

 

[headsmess]

2 sheets of regular paper will do at a pinch havent measured a beer can yet but i think thats about right as well...

 

[china boy788]

2 sheetsof regular paper????? wood that be .003???

 

[headsmess]

about .004. very close regardless

 

[china boy788]

ok thanks for the tip,, ill use that then

 

[roost666]

i set my inlet and outlet at .004

 

[DvDRip]

I'm gonna try both at .004 next time and see how she runs, I've always been told .003/.004 or .004/.005

headsmess most paper is different thickness, but yea I guess it'd be ok for emergency

 

[motorman]

I was under the impression the exhaust valves should have a slightly bigger gap .008?

 

[SnItChY]

i was under the impression that a TALLY-HO PAPER WAS .001 ,HENCE 5 PAPERS = .005 AND SO FORTH

 

[roost666]

hmm just go a feeler gauge set lol like 12 bucks from any local hardware store

 

[china boy788]

ok well i set intake to the two peice of paper size ,lol and jst waiting for bro to get home with the feeler guages for exhust, and ill c if it still will run then

 

[pbk]

using a couple of sheets of paper is heaps dodgy

 

[china boy788]

o well,, if it still works then it be fine

 

[coolmodee01]

all you guys have lost the plot

there's no motor on any of your bikes that need any more than 2 thou inlet and 3 thou exhaust

thats all i run my 150 at

from memory the vertical engines run higher clearance or it might be the hotter the engine runs dunno cactus should be able to clear that up for us

 

[wogtaz ryder]

i just did mine by "feel" yesterday after a cam swap tll i get feelers , and it goes great lol..

ive heard is better to be too loose then tight .. but is it ever bad to be too loose??

 

[headsmess]

yeah, using paper is dodgy, and ive never measured a tally ho but it works. when you cant find the feelers...more often than not

the touchy feely method works for a short term adjustment, but leaving the clearance too wide for too long will bugger the ends of the valve stem and rockers.

 

[n1ck]

i set them at .005mm and .006mm if set any smaller i find they run fluffy and tends to cause higher temp on the exhaust valve and that can cause valve burn
and dont get mm and " mixed up as 2 thou is .005 mm

and to wogtaz to loose can cause wear and shock loading on valve train componants
upto 10thou is aceptable on these motors

before any one starts arguing i do this stuff for a living.

 

[coolmodee01]

yeah nick thats where alot of confusion comes into play with the masses

"" and mm

the new school dont have a big understanding of the imperial times