|
|
Latest discussions at Pit Bike Club:
|
20-02-2012, 04:47 PM
|
#1
|
|
Burning Rubber
Join Date: Sep 2010
Age: 33
Posts: 289
Bike: thump
|
valve clearances on yx140
hi , im gonna check my valve clearences on my yx140 tomorrow when i bring some feeler gauges home from work , ive read a lot of mixed veiws of what to set them at . if any bodys know the correct answer for inlet and outlet and wouldnt mind sharing that would be ace , also do yx140 come with a z40 cam on them , or how could i tell if it has a z40 cam .. its a 3rd gen with the 16mm kickstart shaft if that makes any difference..
cheers
|
|
|
|
20-02-2012, 04:51 PM
|
#2
|
|
Wheelie King
Join Date: Jun 2008
Location: Bristol
Age: 34
Posts: 2,641
Bike: LMX MXT 160 4v
|
Re: valve clearances on yx140
Quote:
Originally Posted by jakeyboi
hi , im gonna check my valve clearences on my yx140 tomorrow when i bring some feeler gauges home from work , ive read a lot of mixed veiws of what to set them at . if any bodys know the correct answer for inlet and outlet and wouldnt mind sharing that would be ace , also do yx140 come with a z40 cam on them , or how could i tell if it has a z40 cam .. its a 3rd gen with the 16mm kickstart shaft if that makes any difference..
cheers
|
0.08in 0.10out
|
|
|
|
|
20-02-2012, 05:11 PM
|
#3
|
|
Burning Rubber
Join Date: Sep 2010
Age: 33
Posts: 289
Bike: thump
|
Re: valve clearances on yx140
maybe dumb but is that mm or inch ,
|
|
|
|
|
20-02-2012, 06:21 PM
|
#4
|
|
Burning Rubber
Join Date: Sep 2010
Age: 33
Posts: 289
Bike: thump
|
Re: valve clearances on yx140
ive also just checked and my bike has a stanard cam in it , its got 3 bolts holding the cam cog on , and i understand the z40 only has 2 . if anyone has fitted a z40 cam the there yx140 did it make any difference , as im looking at buying one
|
|
|
|
|
20-02-2012, 10:42 PM
|
#5
|
|
Track Master
Join Date: Aug 2011
Age: 41
Posts: 370
Bike: Custom 125cc
|
Re: valve clearances on yx140
With the Z40 cam you should get a little more power mid to top end as it has a higher lift so keeps the valves open longer. Be sure to upgrade the valve springs at the same time or you can loose power as they will need to close quicker due to being open longer.
|
|
|
|
|
20-02-2012, 11:46 PM
|
#6
|
|
Super King
Join Date: Feb 2010
Location: Kent
Posts: 1,063
Bike: Stomp z140
|
Re: valve clearances on yx140
0.4 inlet - 0.6 exhaust if you go 8,10 it will rattle like **** at those reding is when they need setting
|
|
|
|
|
20-02-2012, 11:49 PM
|
#7
|
|
Wheelie King
Join Date: Jun 2008
Location: Bristol
Age: 34
Posts: 2,641
Bike: LMX MXT 160 4v
|
Re: valve clearances on yx140
I've been told 0.08 0.10 and it's fine, works a treat & no rattle.. Bang goes your therory 
|
|
|
|
|
20-02-2012, 11:50 PM
|
#8
|
|
Burning Rubber
Join Date: Feb 2012
Location: accrington
Posts: 221
Bike: custom 140cc
|
Re: valve clearances on yx140
Quote:
Originally Posted by BWB
0.4 inlet - 0.6 exhaust if you go 8,10 it will rattle like **** at those reding is when they need setting
|
ive been told to set mine at 0.5 on both as thats the only gauger i have but eveyone is saying it will stop all the rattleing in my engine ?
|
|
|
|
|
20-02-2012, 11:52 PM
|
#9
|
|
Wheelie King
Join Date: Jun 2008
Location: Bristol
Age: 34
Posts: 2,641
Bike: LMX MXT 160 4v
|
Re: valve clearances on yx140
Quote:
Originally Posted by DalePeel94
ive been told to set mine at 0.5 on both as thats the only gauger i have but eveyone is saying it will stop all the rattleing in my engine ?
|
Who told you that?
|
|
|
|
|
20-02-2012, 11:58 PM
|
#10
|
|
The Stig
Join Date: Dec 2011
Location: Stowmarket
Age: 42
Posts: 563
Bike: HUSABERG FS650
|
Re: valve clearances on yx140
i use 4 thou inlet & 6 thou exhaust on all the yx140's builds ive done and never had problems with them
and yeah the z40 cam is worth it..
|
|
|
|
|
Linear Mode
