thanks,
warmed it upto temp, pulled the fuse for the coils and got 195psi on number 1, checked 2 as a comparison and got the same which is a bit better than stock.
 
A bit more about the motor, I had the head taken off when puchased to check it was fresh and found the pistons are between a  flat top and a domed piston, that is they have extra material extending into the combustion chambers. Couldnt find the photos. The block is also o-ringed. As a club car, its always used 98 octane.

Considering all the effort you are going to I would try and find out the .050" cam duration. Do it for both lobes and you can then work out the lsa. Purely on that psi one could assume you are slightly under cammed. Although tightening the lsa will also raise the psi on the same lobes. Best off measuring as above first.

Thanks Spigot & Wozzah for all the advice. She's all back together now for this season after a xmas refresh, now with a weld in 6pt cage. Waiting now for the next event that isnt rained out. I'll leave some kent cam adds laying around, with luck santa may take the hint. Even with only 103hp, she can still be steered with the right foot and hold her own against those  pesky 2L civics and 20 valve corollas which run up here  

The 1.5 to 1.65 rocker ratio just came from what the manufacturer quoted.  Its dependent on rocker type, valve length, clearance and  lash.  Just use 1.6 as a consistent value for quick assessment and you can always measure it yourself if you enjoy playing around with calipers, dial gauges and calculators.
 
Your cam has standard inlet lift (0.40 to 0.41" depending on how you round it) using the 6.49mm lobe / base circle difference multipled by 1.6.  As already mentioned the next thing to work out is the duration.  Thats pretty hard to get any better than to within about 5 degrees when in the car with all the rockers and springs all installed.
 
The duration is generally quoted from the rest - fully open - rest positions.
 
General consensus in recent times is to go for lift over duration for Pinto cams - depending on your application.  Older grinds used to be the other way around.
 
 

 I bit the bullet and bought a kent rl31 kit (3 months ago). On the weekend I finally got the esky in the shed and in bits and the head stripped. I have done what measurements I can,  The head volume is 55cc. the pistons are 91.5mm and the valve spring height is 38.8mm. The pistons have L2359 marked on the top and have some machining marks on the dome.
Any clues how to work out the Compression ratio with these pistons. what cr should I aim for with the rl31.
The Kent specs for valve spring installed height is 37mm, will I need to shim the springs or is it ok to have more height. 

Got the compression sorted out. Does anyone in oz sell std length grp1 valves, mine are 113mm so not getting close to the advertised lifts.