Hi all,
I have replaced the head on my datto along with the entire rocker assembly and i need to know the clearances as i dont have a 1200 workshop manual... got the feeler guages ready just missing this bit of info...
Also i have never attemted to do this but i know the method, any tricks that will make it easyer?
Thanks, Dane..

0.35mm at engine working temperature.

thanks mate...

Which clearance do you need?

The valve-to-rocker arm clearance is:
COLD: 0.25 mm (13 thousands inch)
HOT: 0.35 mm (14 thousands inch)

The trick to make it easier is to do it cold.

can i reduce or increase valve clearance to improve performance? if possible, what is the best valve clearance?

A couple of links that might be handy.

http://wiki.datsun1200.com/index.php/Valve_adjustment

http://mildman.datsunprojects.org/a14_installation_5.htm

Quote:Possibly but it is not advised.

Setting them tighter, you run the risk of burning a valve.

Setting them looser -- even .02 mm -- will make them noisy and cause extra wear.

Thanks a lot, ddgonzal.

Another interesting thing i have noticed is that whenever the clearence is very small, the engine will be sluggish from 1000 rpm till abt 3500 rpm. Beyond that is fine.

But when the gap is set to 0.035 intake & 0.035 exhaust, the engine revs smoother and reaches up to 5000rpm easily. The downside is the torque throughout the rpm range slightly reduces.

Im running 0.030 in & 0.035 exh, and i feel this the the best setting i have got so far.

p.s. - Measurements mentioned above are in mm & hot clearence.

so u mean 0.30mm and 0.35mm not 0.030 and 0.035?