Need valve stem dia from older style non hemi predator 212

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Coolcat70

Member
#1
#1
Can someone tell me the valve stem diameter from the older non hemi 212? Just need the number to check it against the valves I have in predator I just purchased a month ago. I think the newer 69730s have a smaller dia stem and that's why they won't work in my ARC high comp head.
Stem dia from new motor is .1935 in (4.91mm)

Thanks in advance for your reply!
 
astrowrench

astrowrench

Member
#2
#2
older preds,clones,hondas 5.5mm.............. change the guides and they will work,those lg. valves do not work well in a 14cc head w/o unshrouding the head though
 
Last edited:
Roadsterpu

Roadsterpu

Member
#5
#5
From what I ahve learned there are 2 diffferent sizes of valve stems on non-hemi predator 212. The older slip style spring retainer is 5.5mm and the automotive style retainer and locks are 5mm.
 
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