Pyro/ exhaust temps

[Wayne M.]

At long last I Finally welded the bung in so I can see some readings! I put it right after the turbo about 1" down from the clamp- right before where the pipe expands. I went for a short ride on the X-way to see some temps. I really couldn't get on it due to traffic, but while maintaining approx 5-7psi boost I never saw more than 350*. From what I've learned here, there is a 200* differential before/ after the turbo. Seems kinda low to me!

It runs ok though we can always use more power! What do you Guys see on your Pyro's?

 

[ETOBICOKE]

pyro Temps

My pyro is mounted pre turbo. AT 85F outside temp, with the engine warm pyro runs about 300F at idle, and about 600F on the highway at 60mph. You may be slightly low, I would say that you are not that far off. The 200 figure is just an average value and will not cover the entire operating range.



Neil

 

[BushWakr - RIP]

My understanding is that it is NOT +200*F across the board. It is a rough formula = 10*F for every 1 lb. of boost. So, 7 lbs. boost would be an extra 70*F added to your pyro reading. (Post-Turbo of course. )

350*F + 70*F = 420*F +- ..... thats perhaps a tiny bit low at highway speeds which suggests you could add a bit more fuel perhaps.

At highway speed eg: at 65 MPH i'm running around 5-6 psi empty and about 500-530*F in O. D. turning 1700 - 1750 RPM

 

[Matt S]

I've also mounted mine pre-turbo. I see 550*-600* on the pyro at 2000 RPM on the highway. About 250*-275* at idle.

 

[Case500D]

Hi, I also have my pyro mounted preturbo. Before the smoke screw adjustments, I would run 0 lb boost at 60 mph on a flat road and just register at 600* F. With the adjustments, I run 1-3 lb of boost and about 600 - 650* F on the pyrometer. Hope this helps.

 

[Wayne M.]

Thank's fellas! I guess I am in the ball park. This is really giving me the urge to BOMB a little, now that I know where I'm at. The reason for mounting post turbo is because thats where I see 'em on class 8 trucks, and I felt safer to drill and weld instead of drilling and tapping. If I ever take the manifold or turbo off for any reason, I might move it.

Thanks again for the input.