Jay,
I know you were looking for Bernd, but I wanted to chime in. I don't
think you originally specified that you have a 4.7 the first time around.
Everything but the 4.7 is a drop-in affair, but the 4.7 has two main
differences so you have to modify the 'ol standby 54 mm thermostat.
1.) When you pull your t-stat, you'll notice a check ball on the flange
that's very small and is about 30 degrees from vertical on the flange face.
When you get the 180 t-stat, you'll need to drill a small hole, 1/32", to
replicate this check valve, though I used a 1/16" and it did just fine.
2.) The block and gasket are keyed such that the gasket can only be
installed in one direction. The gasket is also keyed with a little rubber
notch inside the groove so that the stock t-stat can only be inserted one
way relative to the gasket and block. This is just to keep the check valve
at the 30 degree position. I cut the block/gasket key off, rolled the
gasket inside-out, and cut the gasket/t-stat key out with a straight razor
blade. You can either do this, or notch the edge of the t-stat flange,
whatever floats your boat.
Those both having been done, just replace the t-stat per Bill's
instructions, making sure to keep the hole you drilled in the flange toward
the top of the block and with the spring and bulb oriented the right way.
Good luck with it, and it really is a piece of cake
Crit
------------------------------
Date: Mon, 9 Oct 2000 14:31:39 -0700
From: "jay & dana" <jay&dana@telus.net>
Subject: Re: DML: Need information on 4.7 Thermostat
Bernd,
Remember yesterday when you responded to my message, " Yup it's that easy"
on a 180 thermostat install for a 97, 318 (no A/C)? Will I or won't I have
to deal with all this BS listed below, file notches, drill holes etc.?
I would like to find this out now before I start the job!
Thanks again for all your (and everybody else's) responses.
Jay
>-----Original Message-----
>From: owner-dakota-truck@buffnet.net
>[mailto:owner-dakota-truck@buffnet.net]On Behalf Of SEMIHEMI01@aol.com
>Sent: Saturday, October 07, 2000 1:43 PM
>To: dakota-truck@buffnet.net
>Subject: Re: DML: Need information on 4.7 Thermostat
>
> Stay with the 180. 160 too cold. Step 1> (2) 8mm. bolts. Drain plug is
>8mm allen wrench on housing opposite the hose flange. (Prepare for an
>anti-freeze bath) Pull hose toward radiator and pull out the thermostat.
>Tight working quarters in there. I got 1 bolt from top and 1 from bottom.
>USE OLD GASKET. It is real soft rubber.
> IMPORTANT>> You will have to file a notch in the outside edge of the
new
>thermostat. See the old one for an example. There is a notch on the inside
>groove of the gasket also a tit on the outside lip of the gasket(cut it
>off).
>Now drill a tiny hole 1/32" in the flange of the thermostat. You will see
>where the check ball is on the factory t'stat, this lets the air out when
>you
>start up. Put this hole up. Make sure you install the t'stat with the
copper
>bulb facing the Block and not in the hose flange.
> Bill
>
>SEMIHEMI01 (Bill C.) 2001 QC, 4.7L, 5spd. 3.55 LSD, K-N Cool-Air,
SilBlades,
>10w-30 MOBIL 1, 180 T'STAT, GIBSON 3" single side swept cat-back, G-TECH,
><A HREF="http://hometown.aol.com/semihemi01/">"THE DAK"</A>
>
------------------------------
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:55:55 EDT