Detroit Diesel 8.2L Engines
BoatRDavid
engine? My 42' Double Cabin (1984) has these engines and I don't know
much about them. They are 4-cycle, V8s. I feel especially
uncomfortable about them because I don't know how to bleed the fuel
system. I have been looking for a motor manual, but so far I haven't
found one that sounds right. I saw a manual and a new governor for
sale on eBay, but the model numbers didn't seem right and I was
leaving town and didn't have time to investigate. Are these engines
sometimes referred to as the "V-71" series? I have a small booklet
that calls them "Fuel Pinchers". The other scary thing I have
experienced is when I go to the parts house in Oakland, CA, and
mention the serial numbers have an "R" in them, the parts man looks at
me in terror and says that those "remanufactured" engines were not
documented. Apparently, remanufactured does not mean rebuilt, but
instead it means that they were made for a marine installation and
some of the castings are different. Can anyone help me learn more
about these engines?
David
The Luke's
specializes in 8.2 engines. Have him spend about 2-3 hours going over
everything with you on your boat. You will learn everything a boat owner
should do and not do, money well spent.
Capt. Perry
David
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BoatRDavid <oate...@pacbell.net> wrote:
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sonofstrat
family of Detroit Diesel. They are an 8,2 liter engine - 4 stroke
design with a somewhat tarnished reputation more in the trucking end
rather than marine. The tune up concept of these engines is close to
what a 53-71-94-149 series -2 stroke Detroit but the exception is the
injector is set with a dial indicator tool that is available from Kent-
Moore tool corporation and is needed to set the injector height. The
valve cover should have a list of numbers on it that are important for
the technician to have as the injector height is critical and the list
should not be painted over or lost. As stated by Capt. Perry go and
find someone who has worked on these engines in your area. It will
save you a lot of greif. I know from first hand experience as I was
one of the first techs in the Detroit Diesel distributorship to work
on these units and have worked on many of them over the years. In your
question, the 71 series was popular to install in marine as it was a
good engine in its time but with fuel economy and emissions leading
the way these are not as environmentally friendly as the new
generation of diesel engines coming onto the market. If you need
questions answered I am also at sonof...@shaw.ca which is the home e-
mail address. Having been a Detroit Diesel tech for 30 years I am glad
to pass on info for those who feel out of sorts with these engines.
Presently re-powering my 34 sport sedan with Cummins B engines. I will
post photos later for anyone interested in re-powering. Have a nice
day.
PS as far as bleeding the system you will need a hand priming pump
which is sold at the Detroit Diesel parts. Very useful for these
engines and as a tip go into the filter at the secondary "IN" fitting
to bleed the system. Do not primer into the filter head at the
secondary as it will pressure back to the transfer fuel pump and blow
the seal in the fuel pump.
BoatRDavid
return to my Uniflite I will look for the list of numbers on the valve
covers. I agree with you and the others that have suggested I hire a
diesel mechanic to show me around my engines. I don't intend to mess
with anything as critical as injectors. The trouble I have had so far
is in finding a qualified person that knows about the 8.2L engine. I
have a lot of trouble just finding parts for them. I live in the San
Francisco Bay area (CA) and I have found, Valley Power Products, in
San Leandro, CA, for my exhaust elbow and thermostats (2 per engine),
which I needed to replace.
I'm not quite sure of the location you mentioned for bleeding, but
when I look at the engine again I will try to figure it out. I have
read that I will need a hand pump for that process when the need
arises. Where and how do I connect the pump (or maybe I should wait
until I have a mechanic with me for that answer)?
On Mar 17, 4:58 pm, "sonofstrat" <Roger_Yo...@bcit.ca> wrote:
> David: these engines came out around 1978 - 79 as part of the engine
> family of Detroit Diesel. They are an 8,2 liter engine - 4 stroke
> design with a somewhat tarnished reputation more in the trucking end
> rather than marine. The tune up concept of these engines is close to
> what a 53-71-94-149 series -2 stroke Detroit but the exception is the
> injector is set with a dial indicator tool that is available from Kent-
> Moore tool corporation and is needed to set the injector height. The
> valve cover should have a list of numbers on it that are important for
> the technician to have as the injector height is critical and the list
> should not be painted over or lost. As stated by Capt. Perry go and
> find someone who has worked on these engines in your area. It will
> save you a lot of greif. I know from first hand experience as I was
> one of the first techs in the Detroit Diesel distributorship to work
> on these units and have worked on many of them over the years. In your
> question, the 71 series was popular to install in marine as it was a
> good engine in its time but with fuel economy and emissions leading
> the way these are not as environmentally friendly as the new
> generation of diesel engines coming onto the market. If you need
> questions answered I am also at sonofst...@shaw.ca which is the home e-
> > David- Hide quoted text -
>
> - Show quoted text -
The Luke's
contact companies.
Capt Perry
-----Original Message-----
From: Unifli...@googlegroups.com [mailto:Unifli...@googlegroups.com]
On Behalf Of BoatRDavid
Sent: Monday, March 19, 2007 4:36 PM
To: UnifliteWorld
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Ross Robertson
site --MarineEngine.com,
it might asist with data,
Ross.
_________________________________________________________________
Don't just search. Find. Check out the new MSN Search!
http://search.msn.com/
BoatRDavid
on my "new-to-me" 1984 42' DCMY. I want to thank you all for the
earlier help and suggestions.
I have been studying my the motor manual that I bought on eBay and
I've learned that these engines have a high pressure gear type fuel
pump that pulls the fuel into the engine and pushes it up to the heads
where a cam shaft opens the injectors as required. There is very
little sensitivity to a little air in the system. However, the best
thing I found was in the back of a small booklet that I found on the
boat. The booklet is a Detroit Diesel Allison "Owner's and Operator's
Guide" about my "Fuel Pincher Diesel" engines. Near the back (page
17) I found the "Procedure for Restarting an Engine That Has Been Run
out of Fuel". The short story is (after filling all filters with
clean fuel) to remove a ¼ inch pipe plug from the secondary filter
cover, and using a hand pump, pull through/out about two quarts of
fuel (and entrapped air). Then remove the pump and replace the plug
and start the engine.
I feel much better about the situation now. In fact, that discovery
really made my day! I have not as yet learned anything about the
governor because that is not covered in any of the manuals I have
acquired. But, that will come eventually I'm sure. It is one of the
things I will probably leave to the qualified mechanic, when I find
one.
David
> Don't just search. Find. Check out the new MSN Search!http://search.msn.com/- Hide quoted text -
sonofstrat
as I used to wok on a lot of these engines. Reply and let me know what
you want.
Roger
> > Don't just search. Find. Check out the new MSN Search!http://search.msn.com/-Hide quoted text -
>
> > - Show quoted text -- Hide quoted text -
David Oates
BoatRDaviid: if you want a copy of the engine anual I could supply one
as I used to wok on a lot of these engines. Reply and let me know what
you want.
Roger