Pyro Install results / Egt's / exhaust

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

M

Martin White

Joined
Mar 31, 2006
Threads
89
Messages
1,102
Location
Abbotsford, B.C.
ISSPRo (same as Nick's), along with boost and AT temp on the A pillar (I'll post pictures later). I've found the pyro temps rise at an amazing pace and it's easy to get into the red up a hill even with a light foot. I'm glad I had this installed, as it's given me some idea of where the EGT's are. They are definitely higher than I was anticipating. Since it's so easy to hit red, I'm wondering how long you can stay there before it becomes an issue. I know this has been debated, but man does it get to the red quickly. One short hill at low throttle and you are there, easily.

AT temp steady at about 162 ish (F) so far, boost ranges up to a high of around 11.5-12.0 psi so seems to be working properly. I found out my exhaust is getting pretty tired - and since everyone says a 3" exhaust lowers EGT's, I think I'll do it. Anyone have any idea how much temps are lowered? We talking 100 degrees F or so?
 
Martin White said:
ISSPRo (same as Nick's), along with boost and AT temp on the A pillar (I'll post pictures later). I've found the pyro temps rise at an amazing pace and it's easy to get into the red up a hill even with a light foot. I'm glad I had this installed, as it's given me some idea of where the EGT's are. They are definitely higher than I was anticipating. Since it's so easy to hit red, I'm wondering how long you can stay there before it becomes an issue. I know this has been debated, but man does it get to the red quickly. One short hill at low throttle and you are there, easily.

AT temp steady at about 162 ish (F) so far, boost ranges up to a high of around 11.5-12.0 psi so seems to be working properly. I found out my exhaust is getting pretty tired - and since everyone says a 3" exhaust lowers EGT's, I think I'll do it. Anyone have any idea how much temps are lowered? We talking 100 degrees F or so?
Click to expand...

Are you pre- or post-turbo?

What is the "red" zone on your gauge? The red area on the gauge might be "conservative". I think at 1250 pre (1100 post?) you are probably ok for shortish duation hill climbs, but try to avoid going much over this for anything more than momentary acceleration power. Mine will go well into 1400 pre if I let it... and that's *with* an intercooler.
 
Martin White said:
ISSPRo (same as Nick's), along with boost and AT temp on the A pillar (I'll post pictures later). I've found the pyro temps rise at an amazing pace and it's easy to get into the red up a hill even with a light foot. I'm glad I had this installed, as it's given me some idea of where the EGT's are. They are definitely higher than I was anticipating. Since it's so easy to hit red, I'm wondering how long you can stay there before it becomes an issue. I know this has been debated, but man does it get to the red quickly. One short hill at low throttle and you are there, easily.

AT temp steady at about 162 ish (F) so far, boost ranges up to a high of around 11.5-12.0 psi so seems to be working properly. I found out my exhaust is getting pretty tired - and since everyone says a 3" exhaust lowers EGT's, I think I'll do it. Anyone have any idea how much temps are lowered? We talking 100 degrees F or so?
Click to expand...

Good info to have eh? I often joke the worst mod ever was installing a pyrometer. It lifts my foot.

I noticed about a 50 deg drop or so in regular driving, but that's not across the board. I can still get it over 1000F (post turbo) but I have to work it much harder, and for a longer period. This is with a 13BT, fresh injectors, a 2.5" exhaust and the 2525 Aero Turbine muffler.

hth's

gb
 
Conserning EGTs it is important to have the least restrictive intake and exhaust as possible.

When I tow with my F350, at times I will need to downshift to lower my EGTs. By doing this, you will move more air through.

When you see thost temps, are you in the highest gear? What temps do you see when you downshift one gear?
 
warpdriv said:
Conserning EGTs it is important to have the least restrictive intake and exhaust as possible.

When I tow with my F350, at times I will need to downshift to lower my EGTs. By doing this, you will move more air through.

When you see thost temps, are you in the highest gear? What temps do you see when you downshift one gear?
Click to expand...
hummm, when i am towing with my F350 diesel van i have to work HARD to get it up to 1000F... ho wmuch weight are you towing?
 
martin-

while minor, your boost pressures are a bit high. 10 avg with 10.5 max are noted with my Westberg gauge. With EGT's high as well do you think your fuel screw has been altered? Look at the screw and see if the spot welded band is still on- if not someone has tampered with it. Your wastegate may also have been shimmed.

I had a missing band, I rotated the screw out 3/4 turn to drop some smoke and temp issues.

I can hit 1050 post turbo pretty easy on 9% grades at 3,000' in the desert- but can still maintain 55 mph w/ a/c load and ambient temps of 90F+.
--before I would have been reallly hot on that hill.
 
Martin White said:
I've found the pyro temps rise at an amazing pace and it's easy to get into the red up a hill even with a light foot. I'm glad I had this installed, as it's given me some idea of where the EGT's are.
Click to expand...
if you are pre turbo 1000F is very easy to hit, keep it below 1200F pre and 1000F post turbo.
i have recommended this to everyone that has a diesel, some look at me as if i just got dropped off from a saucer... i install them on all the diesels i own.

some guys realise how FAST the temps can climb, in some cases as fast or faster than the tach...

for fun try dropping a gear when climbing a hill, the exhaust gasses get purged faster and with higher rpms the EGTs actually drop in comparrision to the same hill at lower rpms...

i have also found that higher boost makes for lower EGTs...
 
Hello Martin,

I know I said I would not be online for 10 days, but I had a chance to check my email and mud so........

Anyways, my truck working hard does not get that hot. Your fuel has been played with. Me pulling hard going 110km (in 4th) at the top of the rogers pass (passing everyone) and I think I hit 1150-1200 for 1 second. Lightened my foot and I dropped 200 in an instand.

For my truckk, typical pulling hard up a hill is 900 - 950. Very hard to get past that. 600-700 on flats, depending on load, and incline.

Just thought I would share. You 'might' want to turn your fuel down.

Just a thought, but maybe your truck was intercooled in Japan? Then someone removed it, and left the fuel up?

Your boost is about right. Depending on the angle I read my guage, it was around 11.75.

Cheers,
Nick

p.s. Now I am really gone.
See you guys later.
 
Wayne,

I am hauling about 9k, trailer+fj40+truck camper. My truck is also chipped, so I am fueling it more than stock. I just got a 4 position chip that has a tow program in it that does not fuel it as much. Just towing the trailer+fj40, it has helped keep my egts in a respectable range. Stock is so detuned so people will not have to worry about things like high EGTs. Once more fuel starts going into the engine, guages and such are required to keep a tab on what is going on so one does not burn up the motor.
 
i am towing about 7000# (trailer and 70). i am also thinking of propane injection although i am not sure i need it. (right now i can accelerate up hill while towing). the propane helps with the EGTs as well.
 
Finally got round to fitting the TC for my pyro gauge yesterday.Went for pre-turbo installation.

Running 5-600F max round town.Idle is 2-300.With foot to the floor holding 80mph in top (5sp manual) up a reasonable hill I can just touch 1250F.Most of the time it's between 800-1000 at motorway speeds (70ish).

What I suspected and mentioned in an earlier post has,in fact,proven to be the case in that fitting pre-turbo to monitor the turbo temp and cool down time is next to useless 'cos even when running at 1000F+ as soon as you lift of the gas the temp plummets down to 300 in a matter of seconds.

Boost seems to max out at a tad over 12psi.

Pulling a 11/2 ton caravan on a 700 mile round trip to Scotland in a couple of weeks,most of it motorway driving so I'll be looking to see what effect the extra weight has on the EGT's and boost and the relationship between the two.
 
My sensor is fitted pre turbo as most on this forum suggested. My gauge reads green from 100-950, yellow from 951-1250, and red from 1251 up. These are all in degrees Fahrenheit. I can hit the red very, very easily going up a steep hill. I don't think my truck has ever had an intercooler as there is no sign of any underhood tampering of that sort ever having been done.

The engine hardly blows any smoke even under heavy load. So it's possible the fuel has been turned up but I'm not sure. Ateb told me the turbo was operating normally and has not been tampered with either. So what I'm hearing now is that my truck seems to be hitting higher EGT's than normal?

I haven't tried gearing down going up a hill yet, but will see if that helps. The temps I have posted are just using the auto in whatever gear it chooses (usually top gear).

Just cruising on flat highway at around 2000 rpm temps show anywhere from about 500 to 800. It is incredibly sensitive to throttle and reacts almost instantly to even slight changes in throttle pressure.

I'm not sure how hot the EGT's will get going up a steep hill. I'll try going up Cypress when I'm next on the North Shore and see what happens.
 
Martin:

I was very surprised at how easily I could hit 1250*F pre-turbo also. I think that what you are experiencing is pretty much normal.

FWIW...I've seen post-turbo pyro installs drop their EGT's just as quickly as soon as you ease off on the throttle. More important for me to know what's going on upstream of the turbo. A turbo rebuild is much cheaper than an engine rebuild...in the worst case scenario.
 
Thanks Stone, that's good to hear. I will look into the fuel settings later, but the truck is running beautifully now. You are right, as soon as I drop throttle pressure, the EGT's drop almost instantaneously. Haven't had a chance to try a long hill, yet. I'll update once I get that done.
 
Martin White said:
Thanks Stone, that's good to hear. I will look into the fuel settings later, but the truck is running beautifully now. You are right, as soon as I drop throttle pressure, the EGT's drop almost instantaneously. Haven't had a chance to try a long hill, yet. I'll update once I get that done.
Click to expand...

please Martin keep us posted ..
 
Hi guys,
I am going to be looking at (hopefully soon) install a turbo on my truck. So the question (which I am sure has been raised before) is the pro/cons of pre or post turbo EGT sensors. Which is better, I know there is going to be a lot of personal opinion, but actual facts. Or should I be anal and do both?
 
Both would be interesting! You can do your own research but the majority opinion on this forum seems to be preturbo. It is by no means a landslide vote, however, and there are some people who strongly disagree with preturbo.

Example of the discussion:

https://forum.ih8mud.com/showthread.php?t=106923
 
My suggestion would be to ask the experts in places like Piers Diesel Research in Port Kells or B&D Injection in Abbotsford. The consensus among those people who have been tinkering with diesels for a long time seems to be pre-turbo.
 
Hey warpdriv what is that intercooler from? it loks like it was made for that spot. I am looking to put one on my bj70,climbing hills the 13bt gets a tad warm if you don't watch it.:D
 
You must log in or register to reply here.

Share this page

Back
Top Bottom