Duramax Diesels Forum Truck of the Week
  #871  
Old 04-11-2018, 03:29 PM
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BrandonLLY BrandonLLY is offline
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Originally Posted by Dozerboy View Post
Now that's the stance of a real truck. Not a flatbillers'.

I'm thinking Toyota MTs next time. I'd love Mickey Thompson MTZs, but just cost to damn much. James what have you heard about Nitto Ridge Grapplers?

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I have 40k on my nitto terra grappler G2’s and have more than 1/2 tread left.
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  #872  
Old 04-11-2018, 04:00 PM
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I have 40k on my nitto terra grappler G2’s and have more than 1/2 tread left.
X2^ around 40k and still show 10/32
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  #873  
Old 04-13-2018, 06:13 AM
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I hate Terra’s off road you might as well have street tires. They do get good mileage and they are quite.


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These views expressed on this post are not my own, but rather randomly generated computer gibberish, and in no way should be used to judge the author's IQ or mental health.
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  #874  
Old 09-04-2018, 11:24 AM
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so i FINALLY got out of town this past weekend. Have not had a vaca since Feb and was going crazy from the heat. Loaded the trailer up minus toys (no tracker or sand car), loaded momma and brooklyn up and headed off to meet my buddy at an intersection just outside of town. he has a 2012 dodge dually with a small tune and deleted. hes the one that basically drove me into hopping the limo up cause he kicked my ass in an old 12v of his years ago in college. Anyhow, he has a 38ft trailer very similar to mine and was only carrying a golf cart. We head up the hills and its really the first time ive gotten to compare my truck to someone else towing similar. first two big hills out of phx, truck is staying semi cool in 95* heat. peaked 235* on coolant at the tops but i was getting drug down to slower speeds and acceling back up to 60-65 pretty quick. I would pull away from him each time, then i got cocky....

last long ass hill to flagstaff from camp verde, i let the truck just lug along in 5th gear pulling the decent grades before the big hill instead of trying to keep it cool and slowing a bit on them. totally forgot there was no downhill before hand to cool the truck down. went into the hill with 240* oil temp and 210* coolant. When oil starts creeping up beyond 240*, coolant starts going with it. had to drop to 50mph and 3rd gear at 3k case i was at 240* coolant and 260* oil...... and here comes my buddy..... he cruises right around me at about 65 and a brand new dodge with a little smaller trailer follows suit. i was PISSED! literally cruised the rest of the hill at 50mph and 240* coolant temp but i started pushing the bitch half way up at a little plateau to see if i could maintain 60-65. no dice. actually hit 250* coolant at the very top of the hill.

I told the wife, "thats it, we are buying a new truck. Im done with this thing". She gave the green light..... after my daughter starts preschool in a couple years. . So i decided id try something i never thought id try or even wanted to do in the last 7 years.... TURN THE TOW TUNE DOWN IN POWER. yes ladies and gents, its a sad sad day. i spaded the old girl and dropped power out of it to see if i could get temps to stay down and just hold the bitch WOT up the hills without worry.

Dropped my tune from 1150uS (im on 100% overs) to 850uS and about 10* of timing at 3250, about 8* at the cruise area in 2100-2300. There was really only 1 main hill on the way back down but its not nice.

Finished out the weekend in some beautiful weather and headed back down with the masses. leaned into it on the high way and she still gets up and goes more than i expected. Get all the way down to the hill that now heads south out of camp verde (there is a hell of a grade going out of camp verde in either direction). traffic is f**king nuts at this point. im stuck to 40mph up the hill with oil around 235* and coolant at 210*. it stayed that way till we hit the 3 lane and i hammered down to pass another dmax and some truckers. went from 30mph at that point to 55mph and by the top, i never saw over 235* coolant with a/c going the whole time (on the way up, i turned the a/c off at every grade to keep heat soak down). Oil was around 245-250 max. i was pretty damn happy with that. Even got to race another loaded up LML up another small grade before heading down black canyon city hill. wizzed right by him and his was singin!

So anyhow, i just flat out cant keep her cool and im tired of testing my nerves and head gaskets. Im going to pull a bit more out of the tune if the truck will still run right and may even drop back to stock injectors. May play with timing some more too as its pretty conservative. Get her to cruise the next couple years without issue and then either buy a low mile L5P or see whats out then. after towing in that dodge, i know i will be happy in the GM. Ill keep the limo and keep it as a toy or occational tow rig, dont really know yet but my wife and i both agree i cant sell it.

some pics. Jumped a few Does in the golf cart but not much else all weekend.




my buddy running his derby car. 80's el dorado 500 big block fwd lol. got 4th on Saturday and it was too hurt for the finals on sunday. we only went Saturday


Brooklyn and i cheering him on


about 2 sec before she decided to take every toy out of that basket and make a mess lol. We played outside from then on (too nice not to).
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #875  
Old 09-04-2018, 11:44 AM
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What were your egts when coolant got to 250*?
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  #876  
Old 09-04-2018, 12:04 PM
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Also interested in what the egts were. Dont you have alternative cooling mods for the oil and coolant?
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  #877  
Old 09-04-2018, 12:05 PM
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Good drinking beer and hanging out James, it was sure nice to see 50* weather again!!!
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  #878  
Old 09-04-2018, 12:23 PM
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Have you thought about putting a water misting system in front of the cooling stack and your 2nd oil cooler? I saw a Pikes Peak race truck a few years back, he had a misting system on it and claimed close to a 30° drop in temps from it over the entire climb.

Looked easy to build, had 10-12 misting nozzles with a 3 gallon reservoir and pump.
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  #879  
Old 09-04-2018, 12:47 PM
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clrussell clrussell is offline
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Originally Posted by Yngdmax92 View Post
Also interested in what the egts were. Dont you have alternative cooling mods for the oil and coolant?
He has the max of everything lol.
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  #880  
Old 09-04-2018, 01:08 PM
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Quote:
Originally Posted by gmduramax View Post
What were your egts when coolant got to 250*?
Quote:
Originally Posted by Yngdmax92 View Post
Also interested in what the egts were. Dont you have alternative cooling mods for the oil and coolant?
1200*. with the 1.15 a/r on the 483, the small turbo never goes beyond 20psi more than what the big turbo is putting out. i dont ever see over 1300* when ran hard up the hills and ive been at 1300* for miles at a time before, not that that helps the situation.

And yng, you name it, i probably have it. Mishimoto intercooler (japanese one, not the chinese), ron davis dual pass radiator, Mikes trans cooler, big 40 plate derale oil cooler and 1600cfm spal fan, b&m 35 stack plate fuel cooler and 1000cfm jegs fan, modded IHI with bullseye s483, solid fan hub, fan shroud sealed to radiator, new trans heat exchanger in radiator, new thermostats, just put new dexcool in, heater hose ran to upper rad hose instead of the coolant y-bridge to keep trans temp down when grade braking (that actually worked well), and im sure some other things im missing. Oil cooler is not in the cooling stack and fuel cooler is under the cab.

Quote:
Originally Posted by hondarider552 View Post
Good drinking beer and hanging out James, it was sure nice to see 50* weather again!!!
yeah aint that no shit! tried to text you the next morning if you wanted to meet us at C-host for breakfast but my signal went to shit.

Quote:
Originally Posted by ChrisPerry View Post
Have you thought about putting a water misting system in front of the cooling stack and your 2nd oil cooler? I saw a Pikes Peak race truck a few years back, he had a misting system on it and claimed close to a 30° drop in temps from it over the entire climb.

Looked easy to build, had 10-12 misting nozzles with a 3 gallon reservoir and pump.
tried that a couple years ago. it helped but not to the extent i hoped. i rigged up a temp setup with a 5 gal bucket in the bed full of water and a little window washer fluid, a e2000 fuel pump dead headed to 100psi, mister nozzles from sprinkler world and some 1/4" tubing. i had a total of 6 or 8 nozzles all zip tied behind the grill to cover the entire cooling stack. i turned it on from the time i hit the highway till i got to camp. used 3 gallons over 1.5 hour drive time. doesnt sound like much but it would cover the engine with water when the fan kicked on and everything was still very hot. i had pulled over to make sure it was working lol. I still hit 240* on coolant easily and oil temps were 260-270. the new oil cooler and fan actually made a bigger difference.

realistically if i wanted to do this, i would need to ditch my front bumper, build a new one or run an old school type stock bumper setup prerunner guys use to do back in the day on these model trucks, run an decent sized aux radiator and a second oil-to-air oil cooler. thats another 1-2k and that may not be enough. i have 2k in the new radiator setup i have and it helped but didnt make near the dent i expected in temps for the cost. there is a point i draw the line and im about there. dont get me wrong, im miles ahead of a stock truck and running what i would say is 450-500rwhp tune while keeping things that much cooler points to that. Im just getting tired of the same old "stare at the coolant gauge and lets see if the 150ft lbs on these A1 head studs keeps gaskets together" is wearing on me trying to make 600hp work.

Come dune season (next month), temps are a non issue cause outside temps are 90* and lower and hills are far/few between. only 1-2 grades that are just 1-2 miles long. those are 70-75mph in 5th gear, 1200* and 40-45psi every time.
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Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #881  
Old 09-04-2018, 01:09 PM
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I would try pulling some timing out of it.
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  #882  
Old 09-04-2018, 01:16 PM
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Quote:
Originally Posted by gmduramax View Post
I would try pulling some timing out of it.
im going to try both ways. Adam suggested more but i can see the plus and minus in either direction.
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Quote:
Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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  #883  
Old 09-04-2018, 01:59 PM
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Originally Posted by Chevy1925 View Post
im going to try both ways. Adam suggested more but i can see the plus and minus in either direction.
More would put more heat in the cylinders wouldn’t it? I’m thinking let the heat go out the exhaust. You’re probably running much more boost than Adam also. What fuel pressure, timing, boost, intake air temp are you seeing when you’re pulling the hills.
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Last edited by gmduramax; 09-04-2018 at 02:17 PM.
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  #884  
Old 09-04-2018, 02:27 PM
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Quote:
Originally Posted by gmduramax View Post
More would put more heat in the cylinders wouldn’t it? I’m thinking let the heat go out the exhaust. You’re probably running much more boost than Adam also. What fuel pressure, timing, boost are you seeing when you’re pulling the hills.
i would think so but it also makes more power to the point of dimished returns. that timing im running i would consider "low" in comparison to what i ran on my 45% overs when the truck was a LB7.

i have not logged the truck while towing but uS i would imagine is close to 700ish as im about 75-85% throttle when pulling the hills and thats at around 2600-2700 in 4th or 2000-2100 in 5th which is 8ish degrees at either rpm. Boost is 45-48psi at 1200* in 4th gear at 26-2700rpm at WOT, at 75-85% throttle im at 37-40psi and 1100* in 4th gear at 26-2700rpm.

air intake temp is only measured at the air filter and its seeing 100-105* on a 95* day while moving. i have the intake blocked from engine heat.
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Quote:
Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4

Last edited by Chevy1925; 09-04-2018 at 03:30 PM.
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  #885  
Old 09-04-2018, 02:59 PM
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Now I see why you melt gears.
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