Author Topic: What is everyone running for EGTS? (Read 8171 times)

BioDieselVW · « **on:** October 08, 2008, 09:38:13 am »

So I was just wondering what everyone was running for egts. I have installed my New Giles Super Pump and with the added fuel im running much hotter. If i do a 1-3 gear WOT run I will see egts in the mid to high 1400's. Its intercooled with 2.5 dp and 3in back exhaust. 20psi boost kkk 14 turbo. Is this too Hot? Am I going to melt this motor? When im just cruising im below 800. Whats to hot? Post up your temps

zukgod1 · « **Reply #1 on:** October 08, 2008, 10:20:48 am »

K24 hot side K26 cold side, 3" turbo back, intercooled.
9mm pump, Big Ass injectors

Will hit 1400 on a long pull, runs 600ish down the freeway flat ground.

James8485 · « **Reply #2 on:** October 08, 2008, 10:27:03 am »

K24, stock K03 DP with a straight through 2 1/2 exhaust 1-3 WOT run will hit 1400's i have never seen any higher and my fuel is up

highway cruising doing 120 KM/H its at 600

zukgod1 · « **Reply #3 on:** October 08, 2008, 10:36:05 am »

Oh ya, "Whats TO HOT?"

Well I would say don't take it past 1600 EVER, I personally have touched 1500 a few times but never sustained. Usually by 1400 I'm way past where I wanted to be as far as speed goes anyway.

In my Cummins I would hit 1800 under WOT often :shock:

BioDieselVW · « **Reply #4 on:** October 08, 2008, 10:41:07 am »

Will a lager turbo lower EGTS. Such as upgrading from a kkk14 to a T3 or KKK24?

VW_Commuter · « **Reply #5 on:** October 08, 2008, 12:00:42 pm »

Quote from: "BioDieselVW"

Will a lager turbo lower EGTS.

I'm not sure, but I think a fine pilsner turbo might do it :lol:

arb · « **Reply #6 on:** October 08, 2008, 12:07:09 pm »

If you want to lower EGT, there are 3 basic ways:

1. Burn less fuel
2. lower intake temps ( larger intercooler, more air through the intercooler, insulate the post intercooler line, etc {your intercooler is in front of the radiator and A/C condenser?} )
3. Lower your boost pressure

saurkraut · « **Reply #7 on:** October 08, 2008, 12:49:05 pm »

Quote from: "arb"

3. Lower your boost pressure

Ah, fuel is heet.

Boost is air, and thats cool...

I can set my 1.6TD up to do 30 PSI, and not exceed 700F no matter how hard I try.

Makes OK power too

arb · « **Reply #8 on:** October 08, 2008, 01:45:53 pm »

Quote from: "arb"

3. Lower your boost pressure

Ideal Gas law:

Pressure * Volume = n * R * Temperature

Its why your air compressor gets hot. It you pack more air into the cylinder your temp will go up.

http://hyperphysics.phy-astr.gsu.edu/hbase/Kinetic/idegas.html

It you never get above 1000 F - WOW !!!!

saurkraut · « **Reply #9 on:** October 08, 2008, 02:12:28 pm »

Quote from: "arb"

Quote from: "arb"

3. Lower your boost pressure

Ideal Gas law:

Pressure * Volume = n * R * Temperature

Its why your air compressor gets hot. It you pack more air into the cylinder your temp will go up.

http://hyperphysics.phy-astr.gsu.edu/hbase/Kinetic/idegas.html

It you never get above 1000 F - WOW !!!!

Yah, but thats with out fuel..

Lowering boost, and maintaining the same amount of fuel will increase EGT.

Maintaining fuel and increasing boost lowers EGT

zukgod1 · « **Reply #10 on:** October 08, 2008, 02:23:35 pm »

Quote from: "saurkraut"

Quote from: "arb"
Quote from: "arb"

3. Lower your boost pressure

Ideal Gas law:

Pressure * Volume = n * R * Temperature

Its why your air compressor gets hot. It you pack more air into the cylinder your temp will go up.

http://hyperphysics.phy-astr.gsu.edu/hbase/Kinetic/idegas.html

It you never get above 1000 F - WOW !!!!

Yah, but thats with out fuel..

Lowering boost, and maintaining the same amount of fuel will increase EGT.

Maintaining fuel and increasing boost lowers EGT

Very true,

If I drop my boost from 27 psi to say 15 psi my EGT's climb much higher much faster.

James8485 · « **Reply #11 on:** October 09, 2008, 12:19:56 am »

holly crap your running 27 PSI thats crazy!! i am running 18-20 and i think thats high (K24)

does it really even make much more of a difference at that high of boost??
arnt you worried about you head gasket blowing!!

i have turned my boost up to like 24 and did notice any differnce from like 20-24......

27 is alot of boost

what have u done for your motor to handle that!

Op-Ivy · « **Reply #12 on:** October 09, 2008, 01:06:35 am »

Air does heat up when compressed. But the amount of heat it generates in the cylinder compared to the combustion of fuel is next to nil.

zukgod1 · « **Reply #13 on:** October 09, 2008, 06:39:04 am »

Quote from: "James8485"

holly crap your running 27 PSI thats crazy!! i am running 18-20 and i think thats high (K24)

does it really even make much more of a difference at that high of boost??
arnt you worried about you head gasket blowing!!

i have turned my boost up to like 24 and did notice any differnce from like 20-24......

27 is alot of boost

what have u done for your motor to handle that!

27 with the pump turned DOWN... 40psi has been on the gauge in the past.

Not worried about head gasket issues. Metal MLS gasket with ARP Head studs @ 90lbs. That gasket isn't going anywhere.
Huge intercooler to reduce intake temps thus lowering cyl pressures.
Runs awesome! :twisted:
Ask 53willys, he went for a ride the other day. :shock:

zukgod1 · « **Reply #14 on:** October 09, 2008, 07:15:16 am »

Quote from: "libbybapa"

I've been under the impression that un-intercooled, 14 or so psi is the point of diminishing returns where the reduction of EGTs from added air no longer offsets the added heat from compression. With an adequate intercooler, increased boost ALWAYS lowers EGTs.

Andrew

14psi on a k14 sure. k24, k26 etc that # gets bigger as the compressor does.

But ya, the more you compress air the hotter it gets this is why the larger compressors don't get the air as hot, more volume less pressure.

Intercoolers are your friend.