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| We Build a Perfect Union (Page 259/309) |
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troyboy
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JUN 20, 10:18 PM
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Hey Archie is this hot or not? was out for a ride on a hot day
I'm thinking about installing a 160 thermostat
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doublec4
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JUN 20, 10:35 PM
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I think thats normal. Thats exactly where my 3800SC sits at on a hot day in traffic.
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Archie
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JUN 20, 11:48 PM
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| quote | Originally posted by troyboy:
Hey Archie is this hot or not? was out for a ride on a hot day
I'm thinking about installing a 160 thermostat |
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That's not bad, i would think it to be about normal for that engine...... If I remember correctly The ECM turns the rad fan on at about 205 to 208 & shuts it off at about 195. So a thermostat change wouldn't make a difference, other than taking a little longer to get up to operating temp..
Glad to see that you're keeping an eye on the gages...... What has that gage read on previous drives?
Archie[This message has been edited by Archie (edited 06-21-2010).]
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troyboy
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JUN 21, 07:42 PM
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| quote | Originally posted by Archie:
That's not bad, i would think it to be about normal for that engine...... If I remember correctly The ECM turns the rad fan on at about 205 to 208 & shuts it off at about 195. So a thermostat change wouldn't make a difference, other than taking a little longer to get up to operating temp..
Glad to see that you're keeping an eye on the gages...... What has that gage read on previous drives?
Archie
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In the early to late spring it was running at about 180. I thought the fan was using a fan switch set to 180, if not can the ECM be set to a lower temp.
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Jake_Dragon
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JUN 22, 05:19 AM
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| quote | Originally posted by troyboy:
In the early to late spring it was running at about 180. I thought the fan was using a fan switch set to 180, if not can the ECM be set to a lower temp. |
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My Vette would run 210 all the time, after changing the heads and fixing the thermostat it runs 190. If it keeps creeping up you may have a bad thermostat. I run a small hole in all of mine to keep air pockets from forming under them, they will take longer to open if there is an air pocket.
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Archie
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JUN 22, 11:31 AM
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| quote | Originally posted by troyboy:
In the early to late spring it was running at about 180. I thought the fan was using a fan switch set to 180, if not can the ECM be set to a lower temp. |
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The thermostat in the car is a 195. The ECM is controling the fan and turning it on at about 208+/- & turning it off at around 195.
You'll also remember that we wired in a temp sensor that lights up an idiot light on the dash at about 228 if it ever gets there.
You can put in a 180 thermostat. (Remember the thermostat housing block is made for a normal SBC thermostat that you can get anywhere.) You'll need to top of the water a little when you replace the thermostat.
You can also get the ECM on/off points reprogramed (I'll detail that in a minute) but I'd do the thermostat first.
After you put in the 180 'stat. test it for a few times to see if you like it.
Anyone who has LS2 Edit or a Tech II scanner (& knows hot to use it) can reprogram the Temps that the ECM turns the fan on & off. I'm sure some of the techs you work with have access the equipment & ability to do this.
Also, you can have even more fun if you pick up a handheld scanner. With it you can monitor exactly what your engine is doing. Like fan commands, open/closed loop, etc. The ECM has it's own water temp sending unit & you can monitor it to compare accuracy to the gage in the dash. The good thing is that you cannot make changes to the ECM program with one of these types of scanners. Here is an example of a scanner that you can monitor basic data of your ECM with.
http://cgi.ebay.com/ebaymot...5fAutomotiveQ5fTools
Archie
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troyboy
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JUN 22, 11:42 PM
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troyboy
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JUN 23, 11:32 PM
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+
Simple right?...... NOT ..... let the nightmare begin
more pics to follow with a little story of my day just changing a thermostat......
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troyboy
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JUN 24, 10:08 PM
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Changing the thermostat should be easy but not on a LS7 in a Fiero. First the back hex screw is under the rear glass area as you can see in the above pic. After a few busted knuckles and a now lost forever 8mm hex socket i was able to remove the screw and the195 thermostat
old 195 on the left and the new 160 on the right
160 installed
now for the nightmare put the thermostat housing back on and play with my friend "rear bolt" ......more busted knuckles and lost another 8mm hex socket ... I became too pissed after an hour and with daylight gone I just pushed the car back into the garage....
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Archie
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JUN 24, 11:46 PM
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| quote | Originally posted by troyboy:
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Sorry, it's a bit hard to get to.
Usually, we mount the Thermostat housin block back about 2 inches further back from where yours is .... like this
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or this
_3.JPG)
We had to locate it about 2" farther fwd. because the Power Steering reservoir had to mount behind it.
.JPG)
Sorry
Archie
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