I was just wondering what some of you turbo guys are doing to keep heat down. I just towed a 5,000lb trailer about 25 miles, and saw my coolant temp hit 225 degrees. The IAT temps were 120-130. The road was mostly flat so I was not in boost very much. I had the cruise set at about 62mph, and the outside temp was 93-97 degrees. Is this normal temps, and I shouldn't worry, or is it too high to be considered safe?

 

I have a turbo blanket and the pipes are all wrapped. I pull a 5k boat almost every weekend and will see 210 if it is 95 outside. My truck is not in boost very often at all though unless I am climbing a steep hill.

 

I just wondered if stuffing 130 degree air back into the motor was driving temps up. I have a 72mm turbo on a 6.2 so it will make boost under 2000 rpms if the load is right.

 

Yea that turbo is pretty small for that engine. A more properly sized turbo would definitely lower IAT's.

 

I'm towing my car to LS Fest with this truck. So I'll log the temps real close and if I'm not happy with what I see, then I guess I'll take everyone's advice and move up to a larger turbo.

 

Either go to a larger turbo or buy a VERY good intercooler. I know the ones that come in the KB and Trick kits work good, but there are better options out there.

 

I have the large Trick Performance intercooler, but I had my methanol set to start spraying at 4lbs and hit max pressure around 7lbs. I might lower the turn on point when towing and see how that does. Still considering the larger turbo route.

 

Your coolant temp shouldn't be that high on such low boost IMO... Mine only ever got to 210ish on a longer 15+ psi pull... Those ambient temps really aren't all that high either in the big picture, and I wouldn't say those IAT's are a problem either Maggie's deal with 160-180 degree IAT's periodically and to my knowledge have no ill effects.... I'd be looking at a bigger turbo, more intake and engine cooling, or a bypass that keeps you out of boost so much just while towing. something just doesn't seem right...

 

Yea i agree..
There seems to be another problem with your cooling system, unless the Intercooler is blocking alot of your air. Assuming you have the intercooler right infront of the radiator.
I ran the poo out of my truck towing a z71 tahoe (~6000# + 1700# trailer) and never got past 195* along with my W/A intercooler is between my Efans and water pump, IATs never got over 120.

im running the 75mm and i can barely get boost under 1900rpms.. and from 2000 and up i can get the whole 5psi.

Id try a bigger Turbo and either a better intercooler or just use your Methanol. Mine comes on 10% at 2psi and ramps up to 100% by 10psi. with a 10 and a 5 nozzle, she will drink thru thru some Windsheild washer fluid.

 

i run a borgwarner s300 60mm on my 5.3, i run 12psi all day, tow 7500lb enclosed trailer 250 miles to a race one way, pull 6-8 degree inclines, my water temp will climb on a 6% grade that is 7-8 miles long to about 225*, intake temps sit at 110 with a 31x11x3 ebay intercooler and two trans coolers stacked infront of it. i also run the stock thermostat. no methonal. rolling on 23" rims too

maybe look at the turbo. people tell me that my 60mm is too small all the time, but you can compare a cheap masterpower junk turbo to a garett or borgwarner. the better 60mm will outperform the cheap 76mm's all day.