hi Tony, i'll be heading up the coquihalla in 8 more days. last time up my egt's were about 1150 ish with my camper and boat. i found myself slightly backing off the throttle about a 1/2 mile before the hwy levels off. i also have the HO injectors. and hp4. what was your speed at the top of the hill. i'm not sure what would cause your higher egt's, maybe more fuel getting into the cylinder perhaps your old injectors were dirty-clogged or had restricted flow in some way. more fuel - more power. Ed

 

Hi Ed,
I was doing about 60 kph up the steep part after the snow shed, which is normal for the many times i've pulled up there, with the same load.Did'nt notice anymore power, and the fuel consumption was the same as usual, average 17mpg, after we came back from the Cariboo/Chilcotin[1800KMS].She does run quieter though.Bill Heath want's me to try his new gl4 program , but i'm scared to put that much extra load on the bottom end, at 240km.Like to see your water mist set up once you get it going.
Tony

 

Hi Ed,
I was doing about 60 kph up the steep part after the snow shed, which is normal for the many times i've pulled up there, with the same load.Did'nt notice anymore power, and the fuel consumption was the same as usual, average 17mpg, after we came back from the Cariboo/Chilcotin[1800KMS].She does run quieter though.Bill Heath want's me to try his new gl4 program , but i'm scared to put that much extra load on the bottom end, at 240km.Like to see your water mist set up once you get it going.
Tony

hi Tony, i think you'd like heaths puter. with it you should be able to hit the top of the coquihalla doing 90-100 km/h. i'm guessing i had 3000 lbs last time up and i was at 100 km/h on the hwy just past the snow shed. i would think your engine would be able to handle the gl4 unless you plan on using the extra power day in day out. i guess bill thinks the same or he would advise you NOT BUY IT. he is all about pleased customers and not just making a sale. i should take you for another run in my truck. i did not have the hp4 last time we went for a drive. and the WMI is up n' running. although i have two nozzles plumbed in i am only using the 10gph for the moment. the other is blocked off. i'll see how the truck handles the coquihalla next friday and i will be bringing the extra parts to run the dual nozzles if i think it needs it. i am hoping my truck will be at 110 km/h at the top of the hill. last time i went up there i had to back off cause of climbing egt's, WMI should solve that. Ed

 

I'm thinking with new injectors you get better atomization of the fuel so if it burns better and more completely it will probably be a hotter fire which means EGT's will be higher.

 

Bill says that w/ the marine injectors your egt's will increase unless you are running an ic.

 

I agree with weik, The old injectors was using the same amount of fuel but was not getting it into the cylinder correctly and that made it to were all the fuel was not getting burned or used up. With the new injectors it is getting the same amount of fuel into the cylinder but it is placing it in their in a really fine mist so it burns it all up. With all the fuel being used would produce more heat which would raise up the egt's.

Just my 02 cents

 

I agree with weik, The old injectors was using the same amount of fuel but was not getting it into the cylinder correctly and that made it to were all the fuel was not getting burned or used up. With the new injectors it is getting the same amount of fuel into the cylinder but it is placing it in their in a really fine mist so it burns it all up. With all the fuel being used would produce more heat which would raise up the egt's.

But don't I keep hearing how it is UNBURNED fuel that raises EGT's???? With new injectors having a good clean spray, and getting more thorough combustion, you should get lower EGT's compared to old injectors, no?

I'm no expert, but that just seems to be what I see the experts here saying.

I personally still have trouble understanding how unburned fuel raises EGT...

 

Unburned fuel does not raise EGT's, it will raise the level of black smoke out the tailpipe. Too much fuel will raise EGT's, and so will a lead foot and a bad turbo along with many other things!

If you want alot of GOOD information about a 6.5 try this site!

 

let me try again!

Boost won't go up until EGT goes up, by definition: The turbo extracts the energy to provide boost from the heat in the exhaust. If there's no heat, there's no boost
All the extra fuel will do is make soot. As manifold pressure increases, soot will decrease. Under the conditions you specify, the fuel isn't being burned completely, thus maximum heat isn't being generated. The exhaust won't start to get hot until the boost starts to come up; it's a process that feeds itself. The low-MAP EGT will come up slowly, thus giving the turbo the energy it needs to function, but it won't really get started until the engine can produce enough gas flow for the thing to behave itself (around 1100 or so RPM in most industrial motors.)
also; The first cause of high egt's would be restrictive air flow or not enough air! The second cause would be too much fuel!
Too much fuel will tale on itself with black smoke. Not enough air would probably do the same but the black cloud would be less noticable unlike too much fuel.

All this info came from a google search!

 

Aren't too much fuel and not enough air the same thing - Rich air-fuel mixture??? :stirthepo
Also: How is heat creating boost in the type of turbo chargers on our engines?
:idea:It seems to me that the velocity of the exhaust is what is spinning the turbo... The waste gate cuts the velocity by divirting some of the flow so that pressure at the turbo's vanes is reduced. I could be wrong though since just revving the engine up with no load doesn't create much, if any, boost.

Confused in TN

 

From what I read(should have saved the site) is this;
If a motor makes 300HP it will put 100hp to use, lose 100 hp out of cooling, and lose another 100 hp out the exhaust.(I may have worded that wrong). The turbo relies on heat just as much as it does exhaust presure.

I am getting all of this by doing searches. I need to do more reading/learning.

 

LOL... I went in to my Doctor once with something I had read, and he said to me "Drink deeply from the well of knowledge, or drink not at all."

Read a whole bunch more.

 

LOL... I went in to my Doctor once with something I had read, and he said to me "Drink deeply from the well of knowledge, or drink not at all."

Read a whole bunch more.

Once a wise old man told me if you dont have anything nice to say dont say nothing at all!

Thanks I will! The best way to learn is to read. The problem know days is what is the truth and what is false? Sometimes you need to find more than one site that matches to find the truth!

 

Found the page!

Man I did mess up the quote I attempted to say!
Here it is properly;

Generally, 1/3 of the heat energy obtained from burning the fuel in the cylinder is transfered to the crankshaft in a diesel engine. Another 1/3 of heat energy is dumped into the cooling system, and the last 1/3 escapes through the engine exhaust. This means that an engine producing 100 hp at the flywheel also dumps the equivalent of 100 hp into the cooling system and another 100 hp into the exhaust system.

Actually the article from this site has some good reading!

I really need to get better at quoting and finding sites!!

 

i was through there about 1 month ago and i was running 1150 in my suburban