[FC] PLUG THREAD

[corvanatics@corvair.org]

i use the old kd insert  with flange on it  for spark plug threads. they hold 
real well and can not end up  in the cylinder.       helicoil on head studs 
but i always end up with heads and cylinders off to do it correctly. i use a 
shop vac when drilling and tapping to keep filings under control along with 
grease. just did 3 top studs (3/8 x 16)on a block that showed up after tourqeing  
the heads and it worked out very well. 
regards, tim colson    
V I C E 
C N Y C C and the list goes on....