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4k Valve Clearances

Featured Replies

if some one could tell me what the valve clearances are for a 4k that would be awesome

 

 

cheers alex

The valve clearances (HOT) are Inlet: 0.20mm

 

Exhaust: 0.25mm

 

Cheers, Mark. :P

Edited by ke20rolla

From Gregorys service and repair manual no 221 - ke-70 series

 

Valve clearance (hot):

Intake 0.20mm

Exhaust 0.30mm

  • Author

ok thanks for ur help guys!!

If thats Hot what would it be cold. Or even something to set them to so i can get the 4k running then set them to above specs when its hot.

if cold just set em .05 larger on both like .2 inlet warm so make it .25 inlet cold then .3 exhaust warm and .35 exhaust cold but these will absolutley need readjusting once car has been warmed upto maximum operating tempurture or you may find a missfire or lack of power due to the valvess siting just slightley open when seated.

Edited by Budowski

a very quick, crude estimate based on a cam-rocker distance of about 200mm, with a temperature increase of 100 degrees above cold engine temp, the rocker grows about .234mm from cold to hot.

 

So, if you open the COLD length up to .3 - .4mm you should be alright to start it.

 

No flaming! - that was a very fast dirty calc, not taking into account the rocker posts/head growth etc.

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