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455 · 04-11-2012, 08:26 PM

Thanks for all your help, your suggestions should make removal much easier in the future!!!!

Racepak said their standard procedure after they install the EGT Probe holders in headers is to drill out the hole with a 17/64 drill bit. The probe and holder hole diameter is about .255" or .254"and the drill bit is about.264. Racepak says the two tapered surfaces( the one on the probe and the one machined into header holder) are what keep the probe in-place. They use this procedure on Top Fuel dragsters headers, so it should work on a "stocker".

The additional clearance in the header holder, along w/ all your help for for the tapered surfaces with two different metals will make removal much easier in the future.

Thanks again for all your help.
Les Otte

04-11-2012, 08:26 PM	#9
455 Junior Member Join Date: Feb 2009 Posts: 18 Likes: 0 Liked 0 Times in 0 Posts	Re: EGT Probe Removal Help Thanks for all your help, your suggestions should make removal much easier in the future!!!! Racepak said their standard procedure after they install the EGT Probe holders in headers is to drill out the hole with a 17/64 drill bit. The probe and holder hole diameter is about .255" or .254"and the drill bit is about.264. Racepak says the two tapered surfaces( the one on the probe and the one machined into header holder) are what keep the probe in-place. They use this procedure on Top Fuel dragsters headers, so it should work on a "stocker". The additional clearance in the header holder, along w/ all your help for for the tapered surfaces with two different metals will make removal much easier in the future. Thanks again for all your help. Les Otte