high egt's

C

cummins1500

10's or go home
Joined
Mar 21, 2009
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63
one of my buddys just bought a 96 5speed 12v and the stock turbo broke the shaft about a week ago so he bought a hx40 the only mods are no plate , intake,5in exhaust,18*timing and thats it and he can peg a 1600deg guage the probe is in the manifold what could be wrong ?? it hits about 38psi of boost
 
Call Kurt at Diesel Specialists. I think your buddy needs his AFC tuned, and it wouldnt hurt to throw that plate back in. Call up Kurt and see what he thinks.
 
Check the timing. I can hit 1600* quick enough with my HX40, but i have a little bit of fuel. Just a plate shouldnt get it that hot i dont think.
 
set the timing two days ago the hx40 he has is a 16cm exhaust housing but spools fine idk what it could be
 
Sounds about right to me, let me tune it I'll blow that turbo up :) A 215 pump is no joke, I have 2 of them!

Jim
 
Cummins Driver said:
Check the timing. I can hit 1600* quick enough with my HX40, but i have a little bit of fuel. Just a plate shouldnt get it that hot i dont think.
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OP is dealing with a truck with a 215 pump, so he's a little ahead of you fueling wise. How quick is 'quick enough'? It's good to have someone running a similar turbo to get an idea of how it cools.

To the OP, try grinding a 100 plate and tossing it in. That way you don't have full fuel from the get go and not running hot right off the bat.

When does it peg the pyro? Highway speed WOT romps? Light acceleration? Pulling heavy loads? 0-100 mph runs? More details please.
 
hes got way more fuel then he needs for a hx-40. Your buddies lack of a plate is making the truck dump fuel immediatly which can "put the fire out"(engine bogs and the turbo laggs) This creates most of your heat right there. Then when it finally lights theres still too much fuel for the hx-40 to handle so it just gets even hotter. i suggest backing the fuel off and tuning with the starwheel and then seeing what happens
 
i peg my 1500 degree egt gauge before 60mph but i also have a 0 plate and dragon flows on stock turbo on a 180 pump.
 
kas83 said:
OP is dealing with a truck with a 215 pump, so he's a little ahead of you fueling wise. How quick is 'quick enough'? It's good to have someone running a similar turbo to get an idea of how it cools.

To the OP, try grinding a 100 plate and tossing it in. That way you don't have full fuel from the get go and not running hot right off the bat.

When does it peg the pyro? Highway speed WOT romps? Light acceleration? Pulling heavy loads? 0-100 mph runs? More details please.
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The OP is dealing with a truck with just a plate and more timing than mine. More timing should keep it cooler, and I still have more fuel than he does.

I have an automatic. If I mash it from a stop and hold it there, my 1500* gauge is burried by 50mph. If I roll into it all the way in overdrive around 1800rpm, it climbs much slower. The higher RPM's(2600+) are what gets it hot. It really isnt much different from my stock turbo with a 16cm housing. It seems to be 100-200* cooler on a hard run.

I could maybe see a 215 truck with just a plate getting that hot, but i would think it would have to be over a long hard run.
 
Cummins Driver said:
The OP is dealing with a truck with just a plate and more timing than mine. More timing should keep it cooler, and I still have more fuel than he does.

I have an automatic. If I mash it from a stop and hold it there, my 1500* gauge is burried by 50mph. If I roll into it all the way in overdrive around 1800rpm, it climbs much slower. The higher RPM's(2600+) are what gets it hot. It really isnt much different from my stock turbo with a 16cm housing. It seems to be 100-200* cooler on a hard run.

I could maybe see a 215 truck with just a plate getting that hot, but i would think it would have to be over a long hard run.
Click to expand...

OP has no plate.
 
I need to take the "dial the AFC in" course. But then, all I want is a good towing rig. Does a pretty good job now.
 
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