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Old 07-21-2019, 10:29 AM   #1
Silver Dreams

 
1988 34.5' Airstream 345
Columbus , OH
Join Date: Jun 2018
Posts: 44
345 generator replacement

Has anyone put a new Onan in their Classic? Once again, the money pit beckons. Since we've upgraded to 50A and installed all new HVAC, appliances, inverter, solar, etc, I'd like to upgrade the generator as well. The issue is the new units - Onan RV QG 7000 EFI Generator are wider - 33.6 inches x 22.2 inches x 16.7-inches high. The 345 compartment is roughly 29 x 24 x 19. I'm no math whiz, but...hmm, sounds like a can opener is called for. Any help or experience is greatly appreciated.
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Old 07-21-2019, 11:52 AM   #2
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1991 34' Excella
2009 34' Panamerica
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I have a very low hours 6.5 kw Onan for sale. PM me if you like..
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Old 07-21-2019, 07:53 PM   #3
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1987 34.5' Airstream 345
Menomonee Falls , Wisconsin
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Hey,
Onan gensets are loud and heavy. Look into one of those portable sets they sell now. I got a Honda genset. It's loud too. I think it's a 1080 . It's water cooled and work great, but it is louder than I'd like it to be. I have seen some guys at worksites running a lot of things on there gensets, and I'm impressed at how quiet they run. So the technology has definetly come a long way from the 80s. I think the only reason why they had onans, is because onan was the one everybody had. Lots of options today. DJ
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Old 07-21-2019, 08:16 PM   #4
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1988 34.5' Airstream 345
Columbus , OH
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Quote:
Originally Posted by davejay View Post
Hey,
Onan gensets are loud and heavy. Look into one of those portable sets they sell now. I got a Honda genset. It's loud too. I think it's a 1080 . It's water cooled and work great, but it is louder than I'd like it to be. I have seen some guys at worksites running a lot of things on there gensets, and I'm impressed at how quiet they run. So the technology has definetly come a long way from the 80s. I think the only reason why they had onans, is because onan was the one everybody had. Lots of options today. DJ
Thanks DJ - good advice, I'll check the Hondas out and see if they have a fit for the old girl.
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Old 07-21-2019, 11:04 PM   #5
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1965 22' Safari
1987 34.5' Airstream 345
Kansas city , Missouri
Join Date: Jun 2011
Posts: 438
We had ours replaced with an rv qg 5500 or something like that. i don’t remember the actual numbers off hand but they had to mangle the opening pretty good to get it in the hole. They got it in but I am doubting without a sawzall it will ever come back out. It isn’t too noisy. We can sleep with it going and no one has complained so far... ours is an 87 345
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Old 07-22-2019, 12:06 AM   #6
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1982 31' Airstream 310
Columbia , Tennessee
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I have put in a fuel injected 7.0 Cummings Onan. Fits good in the huge space the old Onan 6.5 use to live. Working great and is quiet. Runs both of my air units and microwave with power to spare. Tried a 6.5 generjunk and will have nothing less than the Onan. They have serviced the RV industry for many decades! The new ones are much lighter and quieter. Just my 2 cent's worth
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Old 07-22-2019, 12:14 AM   #7
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1982 31' Airstream 310
Columbia , Tennessee
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And yes we have changed to a 50 amp feed as well.
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Old 07-22-2019, 06:17 AM   #8
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1988 34.5' Airstream 345
Columbus , OH
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Originally Posted by cmadmaxman View Post
I have put in a fuel injected 7.0 Cummings Onan. Fits good in the huge space the old Onan 6.5 use to live. Working great and is quiet. Runs both of my air units and microwave with power to spare. Tried a 6.5 generjunk and will have nothing less than the Onan. They have serviced the RV industry for many decades! The new ones are much lighter and quieter. Just my 2 cent's worth
Appreciate the info. That's the model I'd like to put in ours as well. I'm curious about the size and fit. From the specs of the current models, that unit appears to wide to fit. Do you know if they made any modifications to get it installed?
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Old 07-22-2019, 05:15 PM   #9
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1982 31' Airstream 310
Columbia , Tennessee
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I did it myself. Had to raise it about 3" an still had about 2" gap to top of compartment. Good room sideways as well. I'll look to see if I have some photos.
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1982 310 MoHo
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Old 07-22-2019, 05:46 PM   #10
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1988 34.5' Airstream 345
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Thanks Chris - if you can let me know the year and model# too that would be great.
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Old 07-22-2019, 09:05 PM   #11
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1982 31' Airstream 310
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It doesn't show on the phone app, we have a 1982/83 310. Generator is on the right side, rear of the coach.
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