Question EGT for each side?

[RSG]

In some applications, like aviation, each cylinder head temp is measured, and used for things like air/fuel ratio. What about in our engine? Is there any benefit to drilling and tapping both exhaust manifolds to watch for differential temps? Anybody done it? With some the digital gauges it seems pretty straightforward but I wonder if it's really providing a heads-up on engine health?

Thanks!

 

[KRISTOLSON]

You can never have too many guages! I had also wondered that when putting in my tuner, what about the other 4 cylinders, right? I heard a story about a guy with a cumm-a-part with a fueling problem where the front 3 cylinders were fine, but the back 3 were way overfueling. The low egt from the front balanced out the high egt from the back and there was no problem detected on his pyrometer. he ended up burning/ breaking valves in the rear 3 cylinders, total engine replacement type of damage. Once I have some time I have dual pyrometer's on my list.

 

[DaveBen]

In the REAL world, no you don't need two EGT sensors. If you want them, then go for it. There is always a one-in-a-million change that you could catch a bad cylinder, but it is not worth it.

Dave

 

[Tail_Gunner]

I don't think I'd want to have a second gauge. But I have seen gauges (for aircraft maybe) that have two needles for two sources. That sort of set up might be kind of neat.

 

[BJS]

Westach has a dual input pyro that I've seen installed in our trucks though most of the installations I've seen were for pre & post turbo temps. one with each manifold tapped though and he showed within 50° on both banks, usually less. Passenger's bank was slightly warmer due to disproportionate air flow to the driver's bank with the factory intake.

the benefits are not worth the cost unless you're running a very high dollar, very high performance engine. Most of the extremely high performance PSD's I can think of are used in sled pulling or drag racing where they aren't going to back off for high EGTs

 

[RSG]

Thanks guys!
I started thinking about a pre-turbo and post-turbo application and my mind wandered from there onto 1 pyro for each side...

The turbo saver kits use a post-turbo pyro...I wonder if you can also connect its signal to a gauge. Anybody done that?

Yeah, 2 needles on a single gauge would be pretty cool!

 

[BJS]

This place has the dual pyro setup I was referring to

Why settle for just a dual pyro here's a triple

 

[RSG]

Dang, dude! That is too cool! I wish I'd known about the 3-needle option so I could have looked for a 3-cylinder bobcat last year!!
Thanks!