Valve Clearances

[pegleg]

Hey all you tech heads out there, I need a bit of info.
I watched that video on setting you valve clearances the other day and understand how to do it, I have feeler gauges so thats no problem.
The problem is they say to make it between 2 and 3 thou of an inch, What is that in metric? as my feelers are in metric only... is it 0.3 or 0.03
Any help would be good.

Cheers ppls..

 

[pegleg]

Come on ppls, One of you must know, surely..

 

[cass38a]

Sorry peg leg I dont know. But most of the kids on this site probably dont even know what a thou is (or an inch for that matter). I would suggest having a look for a metric manual (ie honda instructions) or get a new feeler guage. Or do some maths.

 

[pegleg]

lol. I'm getting to old, and the grey matter in my head won't let me do maths anymore, so I will look for a manual somewhere. I just thought that MACK or mech_eng_matty might be of some help.
Thanks for the post anyways cass...

 

[mech_eng_matty]

Damn man, i actually had to do some maths on this one!!!! HAHAHA

25.4mm/1inch = Zmm/0.001inch
(25.4mm/1inch) x 0.001inch = Zmm
Zmm = 0.0254mm

Zmm x 2 = 2 thou
0.254mm x 2 = 0.0508mm hence 2 thou

THEREFORE

2 thou = 0.0508mm (close enough to 0.05mm)

3 thou = 0.0762mm (close enough to 0.075mm)

Depending upon how accurate your feeler guages are and how fine they go, if you aimed for somewhere in the middle of 0.05 - 0.075 you'd be in the right area.

Good luck

Matty

 

[Meko]

Nice reply mech_eng_matty - this should help a lot of people here hopefully. This forum kicks ass

 

[pegleg]

Damn man, i actually had to do some maths on this one!!!! HAHAHA

25.4mm/1inch = Zmm/0.001inch
(25.4mm/1inch) x 0.001inch = Zmm
Zmm = 0.0254mm

Zmm x 2 = 2 thou
0.254mm x 2 = 0.0508mm hence 2 thou

THEREFORE

2 thou = 0.0508mm (close enough to 0.05mm)

3 thou = 0.0762mm (close enough to 0.075mm)

Depending upon how accurate your feeler guages are and how fine they go, if you aimed for somewhere in the middle of 0.05 - 0.075 you'd be in the right area.

Good luck

Matty

thats exactly what i got for 3 thou, and it only took me 20 mins on a calculator lol. the grey matter is still working. but I didn't think I was even close.
I was in the middle of sending you a PM, thinking that you would be the man to ask when I noticed that you posted here.
My gauges should be spot on, as they go pretty fine.
Your a champion.
Cheers
--
Steve..

 

[pegleg]

1/1000 = .001

so you want between .002 - .003

also for people who care, 1mm = 39thou

it was good that you had a go, but when anything comes from the yanks they always talk in inches and feet.(Bloody backwards ppl).
Cheers..

 

[kart_ss]

Damn man, i actually had to do some maths on this one!!!! HAHAHA

25.4mm/1inch = Zmm/0.001inch
(25.4mm/1inch) x 0.001inch = Zmm
Zmm = 0.0254mm

Zmm x 2 = 2 thou
0.254mm x 2 = 0.0508mm hence 2 thou

THEREFORE

2 thou = 0.0508mm (close enough to 0.05mm)

3 thou = 0.0762mm (close enough to 0.075mm)

Depending upon how accurate your feeler guages are and how fine they go, if you aimed for somewhere in the middle of 0.05 - 0.075 you'd be in the right area.

Good luck

Matty

Make sure you go 3 thou on the exhaust valve. You gotta leave room for things to expand.

 

[Mack]

Yeah, I like to go 3 an' 4 thou on the China's ( thats .08 and .1 in mm's). Those Honda settings are pretty tight. Doesn't allow for a hot China with possibly lesser qual. valves to expand that frag further.

And don't worry bout the mushy grey matter...thats why I keep these links in my favourites list

LENGTH CONVERSION CALCULATOR
http://www.theconvertersite.com/

and for OS purchases...

Currency Calculator

Edit- Oh and with the clearances you are better off a little on the wide side than not. A little tappet noise never hurt anybody, (or any valves either) but too little and you will start valve trouble.

 

[mech_eng_matty]

No worries Pegleg, glad my geekyness could come in handy for you!

Damn i hate imperial measurements, in all honesty, who wants to use imperial, it has no structure!! 12inches in a foot? Who wants to remember that, give me metric anyday!!!! 1's and 0's are the bomb! HHAHAHAHA

Cheers

 

[Hillz]

yeah whats all this imperial talk, it's not the USA.. LOL

But yeah on average .05mm valve clearance maybe a little more for ya china

 

[pegleg]

Thanks heaps everyone, I new there were some knowledgeable ppl on here.
Again, this is why this forum kicks arse.
Cheers
--
Steve...

 

[BLOFLY]

are these valve setting suitable for a 140 lifan

 

[Mack]

Yep.......

 

[BLOFLY]

thanks Mack