212 Hemi cam question

arielfal

Member
Hey guys, I'm new to go karting in general and doing my first real engine build.

I bought a GoPowerSports Stage 2 kit with all the billet goodies and the .265 cam.


I got a new cylinder head from NR Racing and had it shaved .050. I checked my piston to valve and the best I could measure was .180 with the .265 cam.

What size of cam do you guys think I could go up to from here? I was thinking like a .308 or .310 with 1:1 ratio rockers.



Piston is .020 in the hole

.180 piston to valve clearance

60 lb dual spring setup



Thanks!
 

flattop1

Dawg 89
If your measurements are accurate either would be fine .
Is the new head non hemi ?
Valve spring clearance needs checked as well , spring bind is a problem also .
 

arielfal

Member
If your measurements are accurate either would be fine .
Is the new head non hemi ?
Valve spring clearance needs checked as well , spring bind is a problem also .
It is a hemi head too. I have .230 longer valves, I'm confident coil bind won't be an issue. I can stick my pinky in between coils, haha!
 

arielfal

Member
Also, this is for a road racing go kart on a 5/8 of a mile track, I think I'll probably be between 4,000-9,000 rpm. I'm not sure which cam would be best suited to something like that because I'd ideally still need some torque!
 
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