hop up's
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Senior User
Joined: Apr 2008
Posts: 326
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From: eaton ohio
hop up's
i was just wondering what i could expect from a turbo kit?is there really that much to gain without giving up reliability and simplicity.i really don't haul huge loads i have a K.W. for that.but you can't overlook the cool factor.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Remove the boot after the turbo on your KW and check out the difference.
A turbo is the biggest single performance upgrade you can do to a NA diesel.
At modest boost levels, it may actually make the engine last longer, you don't have to run it as hard.
A turbo is the biggest single performance upgrade you can do to a NA diesel.
At modest boost levels, it may actually make the engine last longer, you don't have to run it as hard.
Lead Driver
Joined: Nov 2003
Posts: 6,900
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From: Campbell River, B.C.
They are much stronger than they had to be for the stock configuration, but I have yet to see an example of a failure that cannot be linked to poor maintenance (even when hopped up). Just look at the main bearing caps in this:
Posting Guru
Joined: Jul 2004
Posts: 1,627
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From: West Valley Utah
(was just wondering what i could expect from a turbo kit?)
On my 85 the difference was: First year I had it, loaded 9.5 ft camper, 22 ft boat with tandem axle trailer. Enough food and camping/playing crap for a week. Started up the canyon and could only do 22 mph. Loaded semi's were passing and the drivers were talking about the "#$%@ tourists jamming up the road. That cut deep as I was an owner-operator at the time.
I told the wife, This just ain't gonna cut it. That winter I put on the ATS turbo kit and exhaust, got the pump rebuilt and calibrated, changed the cam timing.
The next year, same camper, same boat, loaded pretty much the same and the same canyon.........63 mph. I sold the truck in 94, last time I saw it was a couple years ago and the guy said he not had any trouble with the engine. It had over 150,000 miles on it at that time.
On my 85 the difference was: First year I had it, loaded 9.5 ft camper, 22 ft boat with tandem axle trailer. Enough food and camping/playing crap for a week. Started up the canyon and could only do 22 mph. Loaded semi's were passing and the drivers were talking about the "#$%@ tourists jamming up the road. That cut deep as I was an owner-operator at the time.
I told the wife, This just ain't gonna cut it. That winter I put on the ATS turbo kit and exhaust, got the pump rebuilt and calibrated, changed the cam timing.
The next year, same camper, same boat, loaded pretty much the same and the same canyon.........63 mph. I sold the truck in 94, last time I saw it was a couple years ago and the guy said he not had any trouble with the engine. It had over 150,000 miles on it at that time.
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Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
Wait a minute here, you changed the cam timing? Please tell more, what difference did it make? I never heard of any custom cam work ever being done on the IDIs.
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Senior User
Joined: Apr 2008
Posts: 326
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From: eaton ohio
so,all the time i have had the truck that the 7.3 i am putting in my '79 i could have had a turbo and not hurt the motor.figures.seems as though i need to study up on the IH motors.
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Joined: Jul 2004
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From: West Valley Utah
David85, it did not make enough difference to make me want to do it again. It has been so many years ago that I don't even remember how many degree's we cut the key way.
It did run smooth and had no trouble with heat. On the old cummins engines, we used to change cam timing whenever we jacked up the fuel pump to a hot setting. I figured the 6.9 would benefit also. We setup my dads truck about the same way but without the cam timing change and it didn't seem to make much difference.
The differences in pulling a load seemed to be more related to gearing. He has an 87 with 5sp and I had an 85 with 4sp. Axle ratio's were the same.
It did run smooth and had no trouble with heat. On the old cummins engines, we used to change cam timing whenever we jacked up the fuel pump to a hot setting. I figured the 6.9 would benefit also. We setup my dads truck about the same way but without the cam timing change and it didn't seem to make much difference.
The differences in pulling a load seemed to be more related to gearing. He has an 87 with 5sp and I had an 85 with 4sp. Axle ratio's were the same.
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