Most miles before engine rebuild/replacement

[bubblerboy64]

We,ve talked a lot about engine rebuild and replacements in these
motor homes and I actually think this would not be meaningful
information for the reasons mentioned. No way to know how the
engines were cared for. If you had a detailed history of both service
history and use history then you would have something. With out it I
can not think much meaningful information is to be gained. And then
you factor in the truth and bragging factors. I believe that the
reason motor homes have a rather poor record for engine life is as
follows. 1) the way they are used: Left to sit for weeks and months
at a time and then run hard and put away wet. 2) many are rather
over weight for the engines that pull or push them. 3) Poor service
because of the fact that for the most part they are owned by people
who drive cars and don't have much understanding of what is required
for the care and feeding of big equipment. 4) Multiple owners who
buy them and loose interest and as a result just neglect them. The
life of a Motor Home is not an easy one.

John Heckman
central Pa
1973 FC






>
> What you're really asking is: How long will the engine in a Blue
Bird
> last?
>
> The only rational answer is "It depends."
>
> The key to a long lasting engine is proper preventative
maintenance
> and attentive operating control. Blue Birds use the same engines
as
> commercial trucks and busses. But many Wanderlodges seem to require
a
> rebuild many miles before similar engines in commercial service.
The
> key difference is maintenance and operational control.
>
> I purchased a Bird with about 118,000 miles on it. So far as I
know,
> the engine has not been rebuilt. I've put nearly 20,000 miles on
it
> in the 18 months I've had it.
>
> I noted (on my maiden trip) that it had an overheating problem. A
> trip to a heavy-duty bus/truck radiator shop quickly found the
reason
> and I had a new radiator core installed. Excessive heat kills
> engines, probably the quickest of any abuse an owner can give.
I've
> also added regular cleaning of the (external) radiator fins (which
> were clogged with oily-dirt) to my maintenance list.
>
> Obviously, regular oil changes are necessary. You can debate the
> value of synthetic vs. regular oil. I note that oil temperatures
can
> get quite hot. The DD Series 60 manual states that the normal oil
> temperature operating range is between 200 and 250!! degrees f. At
> 250 degrees, oil can break down fairly quickly. I've made it a
> practice to start watching carefully when oil temperature gets to
220
> degrees and to pull over for a cool-down when it reaches 230
degrees.
> (This occurs only on steep grades.) I note that the oil
temperature
> will drop significantly in only 2 or 3 minutes at idle by the side
of
> the road -- but can take some time to cool off while going down a
> grade after reaching a summit -- so I usually take advantage of
> "brake check" pull-outs at many summits to cool things down. My
only
> observation about synthetic vs. regular oil is that synthetic oils
> will degrade less quickly under high-heat, so if steep grades are
an
> expected regular part of your travels, that may be a
consideration.
> Synthetic oil, in a diesel application, do not extend the change
> period significantly (as may be the case with some automobiles).
> Currently I have regular oil in the engine. The previous owner
used
> synthetic.
>
> While you're certainly right to be concerned about the longevity
of
> the engine -- Blue Bird Wanderlodges have used Cat 3208 (in
various
> NA and TA configurations), DD 6v92, DD 8v92, DD Series 60, and, in
> the newest years, various Cummins models. Each of these engines
have
> various life-span parameters and have different maintenance needs.
>
> The biggest unknown with the purchase of any Bird is what care and
> attention the previous owner(s) have provided to the engine (and
> other components). I was fortunate to get the maintenance records
of
> the immediate previous owner (two years worth) -- but I have no
idea
> what maintenance was done for the 9 years my coach was on the road
> before the previous owner got the coach. So, there is simply a
matter
> of faith (hope) that earlier owners did not seriously abuse the
engine.
>
> The fact that some engines only last 60 or 80 thousand miles vs.
> other engines that last 250 thousand miles is not going to tell
you
> that the coach you buy will have either experience. You simply
don't
> know (can't know) what abuse or neglected preventive maintenance
may
> have occurred with the engine in the coach you ultimately may buy.
> And, it will provide no insight into how well _you_ may maintain
the
> engine...
>
> Pete Masterson
> '95 Blue Bird Wanderlodge WBDA 42
> El Sobrante CA
> aeonix1@...
>
>
>
> On Dec 27, 2007, at 10:32 AM, johnjzmail wrote:
>
> > This is a contest:
> >
> > Whoever can claim the greatest number of miles driven before
having to
> > rebuild/replace their motor gets
> >
> > Bragging Rights
> > Authority to make other Birds listen to how they did it
> > Envy of a maybe-buyer looking for something that lasts
> >
> > Contest rules: State the miles you've driven with no remorse,
> > divulge what year/engine/tranny you drove to achieve this feat,
and
> > lay down the law about how to imitate you. (Sorry: Only over
150,000
> > eligible)
> > __________________
> > John in Arizona
> > Wannabe
> >
>
>
> [Non-text portions of this message have been removed]
>