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Old 01-03-2017, 05:13 PM   #1
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06 Allegro Bay 37QDB 300 HP Purchase

I am considering purchasing a 06 Allegro Bay 37QDB FRED with the 300 HP Cummins but also looking at an 08 with the 340 HP for a bit more. For anyone that has experience with the 300 HP I am looking for comments regarding the performance of the 300 HP pulling a small car and negotiating hills. The floor plans look the same and both appear to be in good condition. Any other comments regarding the 06 would also be appreciated. Thanks.
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Old 01-18-2017, 10:42 AM   #2
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06 Allegro Bay 37QDB 300 HP Purchase

We purchased a 2007 Allegro Bay 37QDB with the 300 HP Cummins in August. We recently pulled our Jeep Wrangler (2 door) with no problem in hills of north GA and AL. Yeah we slowed down on some of the hills around Mentone, AL. At one point there was a caution sign that indicated a 13% grade ahead. We slowed to about 35 (or it could have been the driver) but still passed a couple of 18 wheelers. I don't think you will go wrong with the 300 HP but if you can get more horses for about the same money I would go for it. Hope this helps.
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Old 01-18-2017, 10:57 AM   #3
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Is the engine the 5.9L ISB Cummins as used in the Dodge pickups, or the larger 8.3L Cummins ISC? Both engines have 300hp ratings but the torque is much higher in the larger engine.
What is the gross weight of your coach? (The ISB is a great engine if the GCWR is below 25,000- 30,000 pounds)
Next, do you plan on traveling out west (Rocky mountains or Yellowstone), especially on hot days?
Do you plan on towing?
What is your pain level for going slow, or pulling over for over heating?
Answer these questions before you make a decision (these same questions apply to the 2008 340hp coach).
Best of luck!
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Old 01-18-2017, 08:16 PM   #4
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I looked at several 2008 37 QDBs which was my preference with the 340 HP but they had either not been cared for well with lots of expensive needs or were pretty badly worn from use. One had 4 owners in less than 8 years and another lived in full time in with pets. I guess if costs, more travel, and time looking was not a consideration I could have found others. We ended up with a clean 2006 with the 300 HP Cummins, low miles, and no obvious major problems. After driving a bit before buying I think it will be fine. Not a power house but reliable and economical engine. I have a Saturn Vue toad and we generally stay put for a month or so at a time.

My confidence in Tiffin has been shaken a little after seeing how many times the RVs I looked at had been back to Red Bay for things that were either design or factory build related. This forum has helped me to look for things I may have overlooked otherwise. The coach I bought either had the recalls/fixes performed or they did not apply to that year. I have been happy with the quality of my Open Road so feel optimistic about this one.

I was in the Red Bay area so went on the factory tour. They are very busy putting out 12 new coaches each day as opposed to 3 per day in 2008 so getting factor repairs on units older than 4 years may not be what it used to be. No good time of year to go now for factory work. Thanks everyone.
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