installing pyro probe

[Mike C]

i will be installing pyro tomorrow and see that most guys are using a 1/4 npt tap in the exhaust manifold. my pyro is 1/8 npt couldnt i just tap manifold for the 1/8 instead of the 1/4 then i wouldnt need a reducer or is there a specific reason for using 1/4. it is a autometer ultra lite series pyro gauge.

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Y2K 2500 4x4 ext. cab 8'bed nerf bars,Linex,xtang cover bug shield, husky liners,every option but leather and cab lights remote starter auto 3. 54 gears
98 grand caravan (for wife) 93 harley davidson fatboy

 

[Ranger Dick]

yes you can use a 1/8 npt pipe tap. Thats what I used for the Spa Pyro. Sime size as the Boost sensor. Good luck. I tapped mine at the rear exith to the exhaust manifold, about 3/4" in from the flange.

 

[David Wheeler]

Mikec,

Just to be on the safe side.....
https://www.turbodieselregister.com/ubb//Forum4/HTML/004628.html

I'm assuming you've read all these before now, but in case you missed one, please check out the drawing toward the bottom. Hopefully will save you some possible grief. Best of luck on your install!! #ad


David

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2001 3500 SLT, 4X4, ETH Cummins/DEE, LSD, 3. 54, Quad Cab, Long Bed, Agate, Camper Special Group, Towing Group, Additional Body Molding on Bed, Line-X bed-liner.

"REAL TRUCKS RATTLE!!"

 

[Neal Cassady]

There may be an advantage using the reducer if you ever have to service the sender.

Dave D

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2001. 5 2500 QC, LB, 4x4, Auto, 3. 54, Everything but Leather, Bright Silver Metallic, ARE K Series, Diprocal EGT, Boost and Autometer transmission Temp(sensor in the line) in an Autometer Dash Pod, SW Fuel Pressure Gauge, Westin CPS Platinum Step Bars - Black on Stainless