Originally Posted by lyion

lyion here../ Ive driven 430/470 Detroit's and they are great on flat lands but, unless you have a tall gear say at lest 370 rears you are going to dog the engine driving in low gears and temperature will go way up and fuel mileage will go way down.now driving a truck threw the mountain that has to use lower gears along with the temperature as i said it will kill the turbo it has to work to hard .Ive driven 3 different trucks with 430/470 Detroit's that blue there turbos with one company a long with a few other driver doing the same thing hauling heavy rolls of paper our main freight out of Plymouth north Carolina . we took one of the truck to Detroit's dealer and asked why this was happening they said turbo was working to hard and they were to hot for the mountains.we had 355 rears with 10 speed .there OK for flat lands but eat a lot of fuel in the mountain because having to drop so many gears. he said when the company purchased the trucks we didn't spect them right for the area we drive and for the amount of loads weighing 79.000 + all ways grossing out just about 80,000. these trucks were under warranty but still coast money every time a turbo went out it was a bout $800.because all the blow by went in to in -takes and had to be cleaned out which is not covered under warranty .I've read up on specking trucks from guys that set up trucks for owner operators and every one says unless you are pulling light loads threw the mountain you may have big problems especially trucks that have medium cam or small cam engines they just get to hot and haft to workto hard. they said that trucks with big cam engines that had big turbos and at least 370 gears get better fuel mileage in the mountains because they don't haft to drop as many gears .they said stay in the highest gear as long as possible will give you the best torch .down shifting to soon will run your temp up and temp on the turbo boost and you will find your self coming to a craw .specking the truck with the right gears and hp will save you money and ware and tare on the engines for the type hauling and terrain you will drive in .i hope this helps some of you here. /lyion

Originally Posted by lyion

lyion here../ Ive driven 430/470 Detroit's and they are great on flat lands but, unless you have a tall gear say at lest 370 rears you are going to dog the engine driving in low gears and temperature will go way up and fuel mileage will go way down.now driving a truck threw the mountain that has to use lower gears along with the temperature as i said it will kill the turbo it has to work to hard .Ive driven 3 different trucks with 430/470 Detroit's that blue there turbos with one company a long with a few other driver doing the same thing hauling heavy rolls of paper our main freight out of Plymouth north Carolina . we took one of the truck to Detroit's dealer and asked why this was happening they said turbo was working to hard and they were to hot for the mountains.we had 355 rears with 10 speed .there OK for flat lands but eat a lot of fuel in the mountain because having to drop so many gears. he said when the company purchased the trucks we didn't spect them right for the area we drive and for the amount of loads weighing 79.000 + all ways grossing out just about 80,000. these trucks were under warranty but still coast money every time a turbo went out it was a bout $800.because all the blow by went in to in -takes and had to be cleaned out which is not covered under warranty .I've read up on specking trucks from guys that set up trucks for owner operators and every one says unless you are pulling light loads threw the mountain you may have big problems especially trucks that have medium cam or small cam engines they just get to hot and haft to workto hard. they said that trucks with big cam engines that had big turbos and at least 370 gears get better fuel mileage in the mountains because they don't haft to drop as many gears .they said stay in the highest gear as long as possible will give you the best torch .down shifting to soon will run your temp up and temp on the turbo boost and you will find your self coming to a craw .specking the truck with the right gears and hp will save you money and ware and tare on the engines for the type hauling and terrain you will drive in .i hope this helps some of you here. /lyion

Originally Posted by 550hpW900L

There are so many things wrong here i dont know where to begin. First of all a 430 detroit will do fine in the mountains, the "turbo boost" wont get "hot" and you didnt blow 3 turbos because you ran them hot. They will get hot, and are designed to see 1200*F on the exhaust, unless you lugged the crap out of the engine and got it past 1200*F somehow. Which is impossible with a stock detroit as they are really idiot proof and ecm will shut you down before you hurt it. Reason why you had so many issues with turbos is DRIVER ERROR.

Originally Posted by SPIKE 64

I agree with you on the driver error, the one thing about this new fleet trucks is that they don't spec. them right for instance most new fleet trucks sold dont come with pyro or turbo boost guages or any other temp guages. I'm old school without a pyro or boost guage I'm kinda lost, at least on the peace of mind side.As alot of guy's would agree with me ,you can tell alot about how the truck is running just by monitoring your guages. Some drivers think having all those guages is a novelty when actually my opinion having them it's a must.

Originally Posted by SPIKE 64

I agree with you on the driver error, the one thing about this new fleet trucks is that they don't spec. them right for instance most new fleet trucks sold dont come with pyro or turbo boost guages or any other temp guages. I'm old school without a pyro or boost guage I'm kinda lost, at least on the peace of mind side.As alot of guy's would agree with me ,you can tell alot about how the truck is running just by monitoring your guages. Some drivers think having all those guages is a novelty when actually my opinion having them it's a must.