Hi there, I went to put in my pyrometer probe and I drilled right in the center of the manifold elbow and I drilled just to the left of the splitter with the drill hole half on the splitter and half not, how should I plug this while keeping the manifold on, with a weld, or a bolt? what should I do?

 

Bummer. I'd say run the drill in far enough so you can get the tap in there and run a 1/8'' pipe plug into the hole.

 

I'd just tap the hole and thread in a plug. I would NOT use a bolt. It may be too long and hang down into the pathway.....

 

ya that is what I was thinking, just drill it deep enough to put the probe in, then tap it and just put the probe in, I don't think it will affect the EGT reading much at all, the only thing is weakening of the manifold.... think it would be ok?

 

No. I would not put the prob into a hole where it will be up against a wall or divider. You'll get erroneous readings. Put a plug into the hole you made by mistake and redrill a new hole in the proper location and pu the prob there..........

 

Got it, gonna tap out the old hole and do that, thanks for the help guys, hey the devit where the bridge was that won't be filled by the plug will that affect airflow enough to notice it?

 

nah, it shouldn't cause any problem. you're not the first person to do that. previous owner of my 2nd truck did the same

 

Why not try putting the probe in. If it does give erroneous reading, plug and re-drill. If not, you're all set.
-P

 

how would he know what an erroneous reading is? I say tap it, plug it, and drill it in the right spot. the plug probably won't even extend into the exhaust path

 

Just take a die grinder and remove the divider all together!!