Re: cat 3208 vs DD 6v92 -- Buzzy's Question and Answer Forum

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Subject: Re: cat 3208 vs DD 6v92

Author:
Jeff Miller

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Date Posted: 03/ 2/ 03, 5:31pm
In reply to: ken 's message, "cat 3208 vs DD 6v92" on 03/ 2/ 03, 9:32am

The Cat 3208 is in the FC (front engine) and the SP (single axle pusher), the 6V92TA was in the PT (pusher, tag axle) but phased out with the introduction of the 102" widebody in '88. The next engine change in the PT was in '95 to the S-60 Detroit.

All are good engines. If mountain-climbing power is your quest, the best bet will be the 8V92 powered PT or the '87-up 300hp Cat powered FC, or the SP with its 300hp Cat.

Design or equipment problems? I'm not aware of any serious problems with any of those years. They get better and more expensive as they get larger or newer of course, and the pushers are almost always more money than the FC. The DD engine is a little thirstier, costs about 2/3 as much to operate and maintain the Cat, but the big detroit can pull toads up mountains a bit better.

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Re: cat 3208 vs DD 6v92

Author:
Bob Lawrence
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Date Posted: 03/ 8/ 03, 6:25pm

We have just bought our first bird, a 84 PT35 with the 6V92.
The engine was just replaced and had 200 miles when I picked it up in Nashville.
Put 3,000 miles on it to get it back to Tacoma, Wa. and found my milage was 5.7 for the trip.
I hear that I will get approx 6.5 when broken in at 10,000.
Is this about right?
With the price of fuel here (1.99/gal) more miles are better.
Bob

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[> [> [> Subject: Re: cat 3208 vs DD 6v92

Author:
Bob Dilks
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Date Posted: 04/ 21/ 03, 1:27pm

Mileage of 5.7 to 6.0 mpg is about as good as you can expect, with a tendency to 6 on interstate highways. I have a 1984 PT36 with a 6V92 and I compare mileage with truckers using newer equipment - almost all are getting about 6 mpg. Of course, they are hauling 80,000 lbs when fully loaded (and few are) while we are carrying about 38,000 lbs. A former owner of our coach said he once got over 6 mpg driving 1,400 miles downhill from Denver to Dallas.

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