ok i have a set of brand new ngk pluggs for my 89 gtu that has no engine. my current pluggs in my 85 gsl have a 1,000 miles on them (yike!) my question is with the 89 pluggs work without hurting anything?

my concern is if the plug goes to far in and hits the apex seal.



help me out https://www.nopistons.com/forums/pub...IR#>/blink.png

pull one and compare?



Raul

well i just pulled and put them both in the 13b housing i have lying around and they mached so they are in now and working great