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duggs
08-20-2011, 09:48 PM
hi guys, can someone tell me which way the thermostats face in a '98 indmar lt1 - thanks shane

j.mccreight@hotmail.com
08-20-2011, 10:20 PM
The spring part faces in and if there in a small weep hole that goes up, they will only go in properly one way. lt1 has 2 thermostats a 140 thats the lower one and a 160 thats the upper one.

duggs
08-21-2011, 05:11 PM
The spring part faces in and if there in a small weep hole that goes up, they will only go in properly one way. lt1 has 2 thermostats a 140 thats the lower one and a 160 thats the upper one.

by the spring part you mean the main body? as these t/stats are diff design to normal

Table Rocker
08-21-2011, 09:42 PM
The pellet (part that looks like the back of a bullet) goes to the inside towards the block.

j.mccreight@hotmail.com
08-21-2011, 10:14 PM
thermostat install

duggs
08-22-2011, 05:23 AM
thank you, i was going to put them in the opposite

dietdewboy
08-22-2011, 05:43 AM
thermostat install

Thats the opposite of how mine came from the factory

Table Rocker
08-22-2011, 06:52 AM
The copper pellet is on the blunt side of the thermostat.

Jorski
08-22-2011, 10:23 AM
The "pellet" is the part that actually measures the temperature of the water in the block...it goes facing in, while the pointy part faces out.


You can see it well at about 1 minute 30 seconds into the video:

http://www.youtube.com/watch?v=_4MReUKFmpE&playnext=1&list=PL4C4EB27390A7BE06

duggs
08-22-2011, 05:03 PM
the video is correct for a chev as we know them but remember this is a reverse cooled engine with a complicated water routing system. i found a thread that had that hand drawing on water flow direction for the lt1. according to it the top t/stat has the pointy end facing down, as it receives the water coming from the hose direction, not out of the block. the bottom one i'm not so sure as that triangular chamber where it goes is a more complex. i will have a closer look at that . WHERE'S JIMnc WHEN YOU NEED HIM!

j.mccreight@hotmail.com
08-22-2011, 05:30 PM
Do you not have thermostats installed that you can compare?

Jorski
08-22-2011, 08:12 PM
the video is correct for a chev as we know them but remember this is a reverse cooled engine with a complicated water routing system

That video is correct for the LT1..I have a 1993 with an LT1.

While the cooling is reverse flow...the temperature of the water being measured by the thermostat is still inside the engine block. The part of the thermostat that measures the water temp, is the pellet.

The pellet contains wax that expands when exposed to heat and opens the t-stat at the proper temperature....then closes by shrinking when it gets too cool.

Thus...rest assured that the pellet faces in towards the block.

duggs
08-22-2011, 09:57 PM
That video is correct for the LT1..I have a 1993 with an LT1.

While the cooling is reverse flow...the temperature of the water being measured by the thermostat is still inside the engine block. The part of the thermostat that measures the water temp, is the pellet.

The pellet contains wax that expands when exposed to heat and opens the t-stat at the proper temperature....then closes by shrinking when it gets too cool.

Thus...rest assured that the pellet faces in towards the block.

so, you're saying on the top t/stat the pointy end faces upward, and on the bottom one the pointy end faces to the front of the boat

Table Rocker
08-23-2011, 06:20 AM
so, you're saying on the top t/stat the pointy end faces upward, and on the bottom one the pointy end faces to the front of the boatYes, the pellet always goes in the water you are trying to regulate.

Jorski
08-23-2011, 10:45 AM
Here is the pellet...it goes facing in towards the center of the block...pointy side out.


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