When towing between 7K & 10K lbs It's been taking foot work to keep the EGT's in a normal range. 900 to 1300 has been the range. What is the max EGT temps the 12's can take before melt down? I've been trying to keep it no higher than 1100. Any suggestions on lowering my EGT's would be appreciated. My mods are listed in my signature.

 

Get it more air, a bigger housing on your turbo, or something a little bigger. I have a PDR HX40, it helped some, but if I did it over I would have saved up for a better one. And/or water injection would probably be something worth it to check into.

 

where is your probe at? pre or post turbo.

 

Pre-turbo. What is the max EGT's the 12's can handle?

 

My understanding is that short periods of 1300 is ok. for long stretches you would want to keep it under 1300.
my probe is post turbo and I try and keep them all under 1000, for me it just means slowing down a bit and droping out of overdrive.

 

Towing I keep mine at or below 1250 like marked on my Isopro gauges. Sometimes I'll spike to 1300 to 1350 for brief moments.

I'm running stock exhaust and air filter and was wondering about lower EGTs too, seems your having the same troubles with a BHAF and a 4" exhaust...? What boost pressure are you getting up to on the hills on the highway?

Joel

 

Working on getting a heat shield or box for the BHAF. Need cooler air. Stock turbo boost is about 22psi. Highest I've seen is 24psi. The straight 4" exhaust lowered my EGT's 100-150 over stock. I think once I get a real cold intake box or shield will help. I am also getting some advanced timing work done as well as other pump mods. See how it goes I guess. My goal is to be around 1000 towing.

 

I've hit 28psi towing a few times, although mostly under 25psi. I do have to back out of the cruise control on some hills, and towing up some 6-7% grades in the mountains @ 10k keeps me held down to about 30-35mph max. Does that sounds about the same as you? I can get 1000F egts of I slow, but if I want to stay at 65mph thats where I am usually ok unless I hit a larger hill... then the sky is the limit. What speeds are you trying to keep?

Btw, nice DD in the sig. Just picked up an 02 Golf TDI w/ 40k miles and netting 46mpg on the long commute to work. lovin it!

Joel

 

Nice score on the golf. Congrats! If you haven't checked it out yet go to TDICLUB.COM excellent info for the TDI's. Also your timing belt will be due at around 80K miles. Get it done by a TDI Guru off the site. Don't bother with a dealership as they will F' it up. Mine lays down rubber thru 1st and 2nd. Pulls like a freight train in the mountain passes at 85mph. Dropped about 7mpg from stock after modding my car. Doubled the HP and Torque.

Regarding your boost numbers mine are about the same. However never have hit over 24psi. The mountain passes towing 10K is what kills my speed and EGT's. Same here 35-40mph to stay out of trouble heat wise. 70-80mph I'm ok and under 1000 EGT's as long as its flat country. Which isn't much out here.

Greg

 

Yeah i did a fair amount of reading on tdiclub before buying. It was definately a nice score and I enjoy it even with stock power - it's docile but livable. My commute is 60 miles round trip, and now I can fill up 1 time ever 2 weeks. Awesome! I'm saving up for a timing belt already so that I'll be ready when the time comes. No guru's live in my area, but I won't be taking it to a dealership. I read about a shop thats done a few here that I may use...

I guess I'm dumbfounded by your issues, because you are describing mine but I've got stock airbox and stock exhaust and you don't. I tow mostly mountains too... and I'd love to be able to pull the same slopes at the same current speed but at cooler EGTs so I'm not staring more at EGT than the road. Do you have a plate in at all? I have a #10. I'm on a Goerends too.. I use the 2nd gear lockup feature on the 40mph and under moutain passes as 3rd gear would peg my EGT to the roof... are you still in 3rd gear locked when pulling these hills? If so, maybe thats the difference.

I've been thinking about exhaust and BHAF for EGTs, but will it really help or do I just need to think about a different turbo/exhaust housing ... or both.. Since I'm limited on money (of coarse, who isn't right) and I am in the midst of doing a front-end job I'm limited on what I can do right now anyway. I'll be watching here and putting in any input I can think of as well as taking advice from anyone responding.

If your sig spells it out, you are running a stock plate, right? Is that a 180 or 215 pump?

Joel

 

What fueling mods do you have done to the truck?

The stock turbo is pretty good for towing. I never had a problem with it or my current HX40 towing.

I normally try to keep my EGT under 1200*, but sometimes if im in a hurry to get rolling and im really letting it eat, they will get to 1400-1500* before i back out of it. As long as you dont hold 1300*+ for a long time, you will be fine.

Im pretty surprised you guys are having to slow down to 40mph with 10k lbs to keep EGT's in check. Last time i had 10k lbs i was on an old back coutry road and climbing a pretty good hill, I could accelerate in 3rd from 50mph on up in valet mode and never get over 1200-1250*. It would come down some if i was just holding speed instead of trying to gain speed.

Eric

 

Looking at swapping my stock plate out to a #10 for towing. Also getting my timing advanced, 3K GSK and star wheel adjustments. Also bought a new overflow valve to change out as well. I think once every thing is done and my BHAF is in a closed box I will considerably lower my EGT's.

By the way is your Golf a 5spd or Auto? I would invest in a Diesel Geek skid plate to start. Very low clearances in the VW's. Also look up Ventectomy on TDICLUB (Free mod). Allows you to fill up with another 2 gallon.

Greg

 

Are you in the flats out in Kentucky? What kind of grades are you pullin? Out here in Montana we have some serious grades/passes to climb. Any climbing hauling 10K is max 45mph and foot work to keep out of the 1200 range. I hear the CR's can take 1400 and above with no issues. However our 12's can't handle the high EGT's. Too bad Dodge didn't have our airboxes moved to the front of the engine for cooler air. The current location is crap.
Greg

 

Yes, believe me, Im not claiming to be pulling the long steep grades you guys are. But we do have some hollers and hills out here and the grade i was on was pretty steep, It just wasnt that long. 1/2 mile or so. But that said, I wasnt having a problem holding speed at 50mph in 3rd gear under 1200* on the pyro.

I personally wouldnt run a common rail over 1300* either. They might handle it better, but i still wouldnt do it for extended periods.

Eric

 

I've got a #10 and I think thats where you boost is missing from - not enough fuel. Someone advanced my timing to 15.5 as thats what its set at when I went to check it. I have not really adjusted the AFC/Starwheel/Smoke screw yet, which I think will help with some of the lag I have. The #10 was a nice improvement, and I have mine slightly forward of center so I can still go forward some more.

Golf if a 5spd (and after reading raving reviews of the autos and having just bought a nice goerends trans for the truck - I am happy it's a stick). I've been holding the vent open for the extra 2 gallons, but thats annoying and I'm gonna do the ventectomy.

CumminsDriver,

I'm talking hills that are 6% or more for several miles. I can take most interstate hills without issue, its the mountains where the speed limit is 40mph or less. Seems 3rd gear locked is to low in the RPM range due and black smoke billows out, or 2nd gear locked is to high of and RPM and EGTs climb unless you baby the peddle some. My wastegate is blocked currently and I push a max of 25psi or so up these hills in 2nd gear locked @ 22-2500rpm. 3rd gear just doesn't pull up these hills at 1600rpm on my truck. My truck seems like 1900-2000rpm is the sweet spot no matter what. It either smokes like a freight train and lugs, or it's to high rpm and EGTs climb.

I can easly get outrun on these 6-8% grades against my dads half ton 1997 318-powered dodge with auto trans towing 6000lbs. On the highway I have a much easier time, but in the mountains I get tromped. I find that odd... In fact, I thought the Goerends trans would fix that issue as I was heating up the trans without being able to lockup 2nd gear. Now I can lock up second, I can keep the trans ice cold, but EGTs allow me maybe 2-5mph faster up the same hills. I end up slowing down on a particular grade to 25-30mph.

With that said, if anything I've said is not how it "should be" please pipe up, because I could definitely have some issues that I'm not aware of. I've only driven my truck and hauled with my truck, so I don't know if mine is operating properly.

Joel