Another FDC bypass question

[cattlerepairman]

Perhaps you could use the "DANGER" arrow that is used for the tachometer and apply it to the gauge, so it shows above 1200F as "Danger"? Cheaper than a new gauge! Available on your favourite auction site using "military tach danger sticker"

 

[Gypsyman]

I've dealt with ISSPRO for a long time and never understood their post-turbo recommendations. I know some of it stems from liability but the numbers on that gauge are very close to what we consider correct pre-turbo ranges.

The problem with the "post turbo" ranges shown are that the probe could be placed anywhere in the exhaust. 2" from the turbo outlet will give vastly different readings than 2' to 3' away. I've seen guys put the probes literally wherever is easy to reach and then want to argue the numbers that they are seeing.

 

[Gypsyman]

On another note, the ranges shown on that particular gauge are a good pre-turbo match for the safe, caution, and danger temp ranges on a multifuel. Just relocate the probe and you are good to go.

 

[ldmack3]

For now I think I am going to wait for other maintenance. I think if I keep it well below the yellow I will be ok.
I've got some small leaks at the #1 and #6 exhaust manifold, looks to be either oil or exhaust residue. Eventually I will pull the heads and when I do I will move the egt probe and do some other enhancements like oil PSI warning light, oil temp, boost...

Thanks for all the feedback.

 

[WOLF DOG]

I bypassed for two reasons, more consistent fuel delivery, and to stop the possibility of a fuel leak into the oil.

It’s not so much it gives more fuel, but sets the delivery at a solid set point. Which with most engines will be set “high” hence you need to turn down the fuel. My egt climbed fast before I made adjustments. I HAD to keep my foot out of the pedal! Or else I had high boost and high egt’s

Confusing at first…

How do I know if my Deuce FDC was deleted before I bought it ?

 

[ldmack3]

How do I know if my Deuce FDC was deleted before I bought it ?

 

[rustystud]

Sa

After 30+ years of working the heavy truck and high performance business I've never seen a probe fail. Go pre-turbo and get some accurate readings. Your engine will thank you. =)

Same here. I worked as a heavy truck mechanic for over 40 years and never saw a probe fail and fall into the turbo.

 

[ldmack3]

That makes sense now

Gotta picture?

 

[DaneGer21]

View attachment 863932

Your numbers make sense with that picture. If you decide to add another I recommend like mine(and others) that it is before the turbo. Then the turbo cannot skew the numbers.