i will add one thing here,when you pull the manifolds off they are held on with
studs and nuts,if the stud unsrews out of the head you will lose coolant out of
the bolt hole.randydupree93wb
----- Original Message -----
From: vmarshall@...
To:
WanderlodgeForum@yahoogroups.com
Sent: Wednesday, June 01, 2005 11:02 PM
Subject: Re: [WanderlodgeForum] low turbo boost
Mike, as you know, I also had exhaust leaks to both of my exhaust manifolds
and I had
also suspected this when I started losing power. I purchased the manifolds
plus one
pipe that was rusted for $350.00. Stewart & Stevenson gave me a quote of
$1,500.00
for new parts. Using my engine number Stewart & Stevenson was able to give me
the
part numbers. I then started searching the web and inquired on this forum for
places to
purchase used parts. I purchased one manifold from Diesel Exchange Inc., phone
number 1-800-343-7355 and the other one from Scharf & Company, phone number 1-
800-727-4011. I also purchased the rusted manifold pipe from Scharf & Co. Both
of
these places were very helpful. The main business of Diesel Exchange, Inc. is
rebuilding Detroit 8V92 Engines and they are very knowledgeable. Both places
guaranteed the parts to be useable and mine were in excellent condition. I
removed and
installed the manifolds by myself (with the exception of borrowing some tools
from my
son-in-law and a mechanic I know). While I was at it I removed all of the
exhaust and
water pipes, took off all of the rust and painted them with rust protection
paint. I
replaced my turbo charger that I purchased from Stewart & Stevenson for
$350.00
(after much complaining about their high prices.) I also changed my coolant
and as
many hoses as possible. If you decide to do the work yourself you will find
that is much
easier to replace the manifolds if you remove some of the water pipes. Thus,
it makes
sense to go ahead and drain all of the coolant. If you have heat blankets on
your
exhaust pipes I strongly suggest taking them off and inspecting the pipes to
make sure
they have no rust holes. Stainless steel flex pipe is very reasonable and easy
to work
with. If I recall, I had to purchase 10 feet of flex pipe at a cost of around
$15.00 a foot. I
reinstalled the blankets over the stainless steel flex piping but did not put
them back on
my exhaust manifolds. I feel that the manifolds will cool much better without
the
blankets. However, I did install thermo material in areas near the passenger's
side
manifolds in order to protect any nearby wiring. I believe after all was said
and done I
spent around $2,500.00 in parts. My engine now runs more efficient, has more
power
and operates about 10 degrees cooler (rarely above 185). I got a lot of
satisfaction
doing the work myself even though it probably took me five times longer than a
person
with more knowledge. At least I know every attempt was made to do it
correctly and I
certainly got to know my coach better. If I can be of any help please let me
know.
Gene Marshall, Dickinson, Texas 1988 PT40
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