Kingdog put his over the mirror and he really likes them. They look really nice there.

 

If you shut down at 300* pre turbo, will that hurt anything? Does the turbo add heat?

 

I think that pre turbo adds heat, post turbo is cooler but reflects what temp the turbo is at. I could be wrong, Drew, Jake or one of the guys could tell you better than I.

 

I was always on the understanding that post turbo is incorrect for if you want to go off the gauge to turn off your truck. Hence the reason I'm getting two because I want to know how hot my engine is running and then I want to watch the turbo. Yeah I think the over the mirror gauges will be nice. I figured out that when I get the cubby gauges I can tie in some lights (low fuel warning light) and couple switches for my aux lights and such.

 

I have been wanting a Jake brake since I bought the truck. My wife and I are getting ready to buy a travel trailer in the next week or two so it would be great to have one anyways.

 

I can tell you Isspro are not cheap looking. I have the Isspro EV tripple guage (tranny,pyro,boost in A pillar) and have been flawless. They match the OEM cluster guages. The new Isspro EV are a nice guage/s in my opinion.

 

This is how it was explained to me by Cumminalong a while back

Him - Performance purposes: pre-turbo (this tells what the valves and turbo vanes are feeling)
Cool down purposes: post-turbo (this tells you the heat soak that is actually occuring in the turbo housing)
[/align][/align]Me - Yeah, I remember you telling me this before , however according to Drew ( if I'm understanding him right ) he says that after the turbo would be LOWER that before it. I thought it was the other way around.
[/align][/align]Him - your right. . .temp readings after the turbo are lower than those before the turbo. [/align]
The probe itself will read lower after the turbo, while the truck is running. This is because the turbo soaks up almost 30% of the heat that is actually produced by the engine. This heat is "soaked" into the turbo's housing. That is why the post turbo probe, during operation, reads lower.

Now, when the truck comes to an idle, the exhaust gases cool very quickly and the pre-turbo probe shows a lower temp. This is because the post-turbo probe is see the residual heat that is now being "soaked back out" of the turbo housing and exiting the exhaust stream.

The actual exhaust gases cools very quickly, the turbo housing takes much longer to cool. If you were to immediately turn the truck off, the only way that heat escapes is to radiate out into a hot engine bay. Then the oil doesn't flow and just sits on the turbo shaft and cooks.

What also happens, is you see the pre-turbo temp begin to rise after shut down, as the heat from the turbo housing leaches into the exhaust manifold and the pre-turbo EGT probe.
[/align]
[/align]Me - So, if I'm crusing down the highway, the BEFORE turbo probe will read higher, but once I pull into a parking lot the AFTER turbo will read higher

Right ??

Going with the +300 degree thing that you guy's told me about, if I'm crusing down the highway and I have my probe mounted AFTER the turbo and I'm getting am EGT reading of 1000 degress, I can assume that it's about 1300 degrees BEFORE the turbo then right?

Am I getting it ??
[/align][/align]Him - I use the one that is on my Attitude monitor. It can be set for time or EGT.

Because I have my EGT probe pre-turbo, I use the time function.

Normally, I leave it on 1 minute and all I have to do is pull the key and walk.

If I was loaded up on the highway, I'll set it to 2 minutes.

If I was really pulling hard and just came off the highway, a hill, etc., I'll bump it to 5 minutes.


And yes Mayfair, you are correct. Most likely though, on the highway at a cruise, you are gonna see very similar temps. The gases are moving fast and freely, so no a lot of heat soak takes place. The biggest difference you see is under a load or accelerating hard.
[/align]

 

I bought a three guage drivers side pillar mount on e-Bay for about $20.00 and installed an Autometer
electronic fuel presure guage, Vac/boost guage & fuel/air ratio guage. I'm very pleased. I bough the vac/boost used on e-Bay and it did no come with the mount & nuts. I called Autometer to buy the parts I needed and they sent them to me free. My fuel sender unit packed it in after 4 months and they replaced it free. I'm impressed with the product & customer service. Sorry I can't comment on the other brands of guages. I stick with what works and gets good support. Cheers, Mopar or No Car!

 

Thanks Mayfair, that was exactly the info I was looking for.

 

No problem

It's funny, today was the first day that I've towed my trailer since installing the gauges. I have my probe mounted after the turbo. My EGT's go up to and seem to stay right at 800 degrees while cruising along. At first i was nervous thinking that if i added 400 degrees to that number THAT would be what my temp was PRE-turbo ( 1200 degrees ) but then I remembered what cumminalong said about how the two seem to be the same while cruising.

Once I come to a stop, the EGT's sink fast to about 600 degrees, but then seem to take about 2 minutes to drop to 400 which is where I think it's safe to shut down.