Originally Posted by MattEv
Hello, I am new to the forum and have a quick question. I have 1985 Minnie Winnie and am looking for a onan on board. What size should I get for this year and would a 1973 Minnie Winnie's onan fit for me. Thank you for your replies in advance!
There are so many Onan models that there is no way to guess about the fit unless you actually make measurements. There was a very common version of Onan in this period and they came in 6.0Kw (NH) and 4.0Kw(BF) versions. Both of these have very special form factor and are hard to replace, but replacements have been made.
It is my guess that by the way you framed the question that you have a line on a 1973 Onan. If this is the case, retrieve the model number, and do an internet search for more information. There were six RV versions of Onan in the 70's only two were the compact "Power Drawer" versions.
I suggest that you very carefully measure the generator space. If your measurements are off at all, the effort to install may be massive. I have two '73 vintage BF units, and the one currently in the coach runs like a watch (OK, it is louder than a cheap pocket watch).
Matt (another one)