odo99t. the os plug has a different taper! sure it works but isnt correct taper. i ran all my grps with a odo99t and they ran at 190 degrees with perfect power. i sold all my grp stuff and moved on. this whole rod thing that grp left us with wasnt cool.
Originally Posted by
Watkins
What other Glow Plugs will work with the GRP .21.
O.S. Seem to fit. O'donnell fits ok but not well.
What has everyone been running.