Pyrometers install

[Mopar1973Man]

Here is a installer that screwed up the pyrometer probe install. As you'll see they drilled in the divider of the manifold. 

 

 

[01cummins4ever]

1 hour ago, Mopar1973Man said:

Here is a installer that screwed up the pyrometer probe install. As you'll see they drilled in the divider of the manifold. 

 

I wonder what kind of readings that one got

[KATOOM]

90* degrees.....

Edited April 12, 2016 by KATOOM

[leathermaneod]

Thanks for the advice dripley! I think I am going to move it. The more we are talking about it the easier it's sounding. I just have to finish my wife's car first. I'll have a chance to practice drilling and tapping on that because the little hold down bolts for the front wheel speed sensors in the steering knuckles broke right off. 

[leathermaneod]

Well I guess I have to re ground my pyrometer too. I was talking with Autometer about how the needle drops all the way past 0 to about the 6 or 7 o'clock position at key off and I don't think it always reads correctly when the truck is cold at key on (a little warm even when it's rueally cold out). Anyway they said it sounds like I have a bad ground which is possible because right now the ground for it is soldered together with the gauge lighting grounds and screwed into the dash frame. How do you all have your grounded? Directly to engine? That's what the guy from Autometer told me to do...

[notlimah]

I can't speak for the Autometer gauges but with my ISSPRO gauges I just have the positive wired in series down one side and ground wired the same on the other post and I ran the ground wire into a screw in the kick panel somewhere. Works fine on both trucks, never had any issues.

[Mopar1973Man]

I've got a 4 terminal barrier strip. Basically 12V+, Key Power, Dash Lights, and Ground. So this ground goes to the dash frame. All my accessories are powered by this strip. 

[leathermaneod]

Hmmm. Well maybe I'll try just giving it it's own ground then and see if it helps. Or I may just clean the ground I have.

[leathermaneod]

For the 1/8 npt tap, is the 27 thread the correct one? And it should be tapered thread correct? Also, for the plug for my extra hole, is galvanized steel ok?

Edited April 13, 2016 by leathermaneod

[Buzzinhalfdozen]

Yes 27 thread  per inch tapered thread. Galvanized plug is fine but you should still put some high temp antisieze on it. 

[leathermaneod]

Sweet thanks! Do they make antisieze that is specified as hi temp? Like I have the normal aluminum paste stuff, is there something better for this? 

[KATOOM]

I believe most, if not all, anti-seize is going to be high temp.  And I'd use a regular iron plug too just because of the potentials for galvanic corrosion.  Probably minor but I'm just leery like that.....

[leathermaneod]

Good thought. I'm just having a hard time finding all these parts. I may just have to break down and order stuff online

[KATOOM]

What parts?  Everything should be available at your local hardware store.

[leathermaneod]

1/8 npt plug not galvanized. Maybe I could use brass? 1/8 NPT tap was hard to find and even when I did it doesn't come with a drill so I still need one of them. Local hardware stores around here aren't great haha

Edited April 13, 2016 by leathermaneod

[notlimah]

Eric has the tap and drill available. That's where I got mine from, although I did end up using a slightly larger drill once tapping the hole became really hard.

[KATOOM]

The plug would be found in the residential "gas" pipe section as you cant use galvanized material in residential gas piping.

[leathermaneod]

Hmmm ok thanks for the info. I'll have to look around a little more. 

[leathermaneod]

I looked at his tap and drill set. Very reasonable price too. I also called my local fastenal today and they have a tap and a drill bit. However the tap is not US made. I'm a little leary of using a Chinese tap on something so important. What do you all think? They also have a regular black steel pipe plug so that solves that. Now I just have to figure out when I can get there because they close at five every day and aren't open on weekends lol oh and I checked my antisieze and it is good from way below zero all the way to 1600°. 

[Buzzinhalfdozen]

You probably don't "need"

high temp most standard antisieze is good to 1,200-1600 degrees. High temp nickel is good to  2400*. Your bottle should have a temp rating. 

Edit: I see you beat me to it. As a personal rule I don't use Chinese tools for things like that. If you break a tap off you're pretty much screwed.