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D2K
Dodge Dakota
6/25/2001
19:27:56
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 Subject: 180* Stat Part # for 4.7?
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Message:
Does anyone have the Robert Shaw brand 180 degree stat part number for a 4.7? Oh, and how about the gasket part #? None of the AutoZone's here in NE can figure out what will fit a 4.7, and they don't list any gasket #'s either.
Thanks a bunch!
Chris S.
2K 4.7L Durango SLT+
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Doug McCoach
Dodge Dakota
6/25/2001
23:48:13
|  RE: 180* Stat Part # for 4.7?
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Message:
Chris, the Robert Shaw p/n is GT755-180 & is available from Speedtweaks.com for about $9. I just installed it Sunday, took about 2 hours since you have to drain the radiator & it takes a while to drain. Even when you think its empty & you remove the old Tstat, a whole bunch more comes out of the Tstat housing all at once. Keep a big drain tub to catch it all! The gasket comes with the new tstat & its not even necessary. You'll see a white circular gasket that surrounds the old one & it comes right off & fits the new one for a gasket/RTV free mess-nice! The old Tstat feels & looks like it was a real rugged/high quality part & that it would have lasted a long time-I kept it just in case.
With the new Tstat, I have noticed that the temp gauge runs much lower than before for every day driving but when your out racing around or sitting in stop/go traffic on a hot day, the temp gauge goes almost as high(if not the same) as the stock 195 degree Tstat. I'm not sure if this is acceptable/normal? I was hoping that all driving situations would be lower on the temp gauge. However, once you get moving it drops to the new low level real quick. At the lower level it gives it a little more pep like when you drive on a cool 75 degree evening & the truck seems to have more pep-that's because it does with the cooler intake air & this is what the 180 tstat does for you. Anybody else notice it climbs pretty high on hot/hardworking days when you come to a long stop??
2000 QC 4x4 Auto 3.55's 4.7L V8
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Doug McCoach
Dodge Dakota
6/25/2001
23:52:23
| RE: 180* Stat Part # for 4.7?
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Message:
Yes, I know, the new Tstat doesn't cool the incoming air, what I meant to say is that it mimicks the effect of cooler incoming air by allowing the engine to run a little cooler. Had to get that up there before I took to much abuse!
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D2K
Dodge Dakota
6/26/2001
08:34:42
| RE: 180* Stat Part # for 4.7?
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Message:
Thanks, Doug!
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Doug McCoach
Dodge Dakota
6/26/2001
23:19:51
| RE: 180* Stat Part # for 4.7?
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Message:
My pleasure D2K. Here's what I noticed today. On my way home from work, its now
90 degrees outside & the first 15 mins or so the temp gauge was at a nice low level.
Then, after getting on the throttle once or twice & sitting in stop/go traffic the temp
gauge rose to just above 210 degrees & then the fan clutch kicked in. I don't ever
remember the temp gauge reaching 210 degrees with the stock 195 degree tstat. I even tried resetting the PCM with no luck, not that it would have anything to do with it, but I tried.
What we need is SpeedTweaks to make a little gadget like their IAT adjuster which
will allow us the ability to change when the fan kicks in. I beleive the aftermarket
ECU/PCM programmers can do this but they don't make one for the 4.7L V8 dak yet.
C'mon SpeedTweaks. I know, this is not as easy as the IAT adjuster & is probably
not possible w/out a custom programmer, oh well.
2000 QC Auto 3.55's 4.7L V8
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Speedtweaks
Dakota Enthusiast
6/27/2001
00:54:24
| RE: 180* Stat Part # for 4.7?
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Message:
Doug,
Email us offline with all the details and we'll take a look. Jet makes a product like that already for the GM's...all they do is....well, we won't give all the secrets away. ;)
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CHUCK
Dodge Dakota
6/27/2001
02:47:59
|  RE: 180* Stat Part # for 4.7?
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Message:
Doug, your stat's only job is to govern the MINIMUM temp by only opening once the coolant reaches 180 degrees, after that happens its only affect is how much volume it'll allow wide open. It's up to the rest of the cooling system to try to keep the temp from going higher. A pretty tall order under normal circumstances not to mention when you pile on performance mods and drive accordingly! HP=HEAT! Factor in your 90+ degree ambient temp and it doesn't take a degree in thermodynamics to see that cooling system upgrades are going to be the key to you achieving lower temps "in all driving situations". A premium tranny cooler such as B&M's super-cooler might allow you to bypass the tank mounted one in your radiator. This would remove some of the heat load on your cooling system and will probably cool the trans better too!
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CHUCK
Dodge Dakota
6/27/2001
03:50:09
|  RE: 180* Stat Part # for 4.7?
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Message:
Doug, SpeedTweeks lists a couple more cooling system goodies, an additave called Radiator Relief that claims to be good for up to 30 degrees cooler and Flowkooler brand water pumps that are supposed to be super efficient also claiming to reduce coolant temps as much as 30 degrees! HMMM...Could it be...a cooling system capable of maintaining 150 degrees so the stat actually closes during normal opperation? How 'bout it Bernd? You're obviously a believer else you wouldnt be sellin' the stuff. I know it's as hot in Pflugerville as it is here in Corpus,!
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Jason O.
Dodge Dakota
6/27/2001
13:39:48
| RE: 180* Stat Part # for 4.7?
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Message:
What's Radiator Relief?
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Chuck
Dodge Dakota
6/27/2001
16:41:01
| RE: 180* Stat Part # for 4.7?
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Message:
Jason this is from SpeedTweeks page:
DEI - "Radiator Relief"
Radiator Relief is the year round coolant system performance improver. Derived from the
same technology as Cold Fire®, Radiator Relief is beneficial to all water-cooled, internal
combustion engines utilizing a radiator.
Radiator Relief is for use with straight water or your typical water/antifreeze mix and is
designed to function in two ways:
First and foremost, Radiator Relief will provide up to 30º F reduction in operating
temperature. Second, Radiator
Relief will achieve this reduced operating temperature 50% quicker upon engine warm-up.
In other words, Radiator Relief will warm the engine up to operating temperature 50%
quicker, and keep the engine 30º F cooler. This characteristic is not only beneficial to
motor sports professionals, but it is beneficial to the daily driver as well, who can enjoy
"heat in half the time" for those cold mornings. Radiator Relief is a product that spans
both the performance and traditional market with this two-fold ability.
Radiator Relief encapsulates heat in the engines block and cylinder heads and dissipates
the heat ambiently through the radiator. Like its "cousin" - Cold Fire®, Radiator Relief is
considered to be upwards of three times thinner than water. This characteristic allows for
a free flowing coolant system circulation (less friction), while maximizing "hot-spot" contact
within cylinder head passages.
Radiator Relief is 100% biodegradable, non-corrosive and non-toxic. The product is no
more slippery than water and actually helps fight corrosion and sludge buildup.
Radiator Relief is compatible with regular, synthetic and environmental antifreeze as well
as block sealers, stop leak products and other additives as well. Radiator Relief provides a
one-product solution for any coolant system and is completely safe for use with various
alloys; magnesium, aluminum, brass, etc.
Radiator Relief is extremely easy to use. One, 32 oz. Bottle of Radiator Relief, p/n #
040104 treats a 15-quart system. Simply remove one-quart from the coolant system and
replace with Radiator Relief. No premixing is required.
Part
Number
Description
PayPal
Shopping
Cart
Cost
Shipping
DEI-0010
DEI "Radiator Relief" - 32oz Bottle
$16.95
1st
Bottle
Included
We now accept: VISA, MasterCard, AMEX (Soon), and ATM/Debit Cards
You can also send Check or Money Order to:
SpeedTweaks, LLC
P.O. Box 66384
Austin, TX 78766-6384
Please allow 3-4 days for check processing before product is shipped.
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CHUCK
Dodge Dakota
6/27/2001
16:59:24
| RE: 180* Stat Part # for 4.7?
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Message:
I'd love to hear from anyone who's used this stuff........does it really work?!
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Doug McCoach
Dodge Dakota
6/27/2001
19:47:35
| RE: 180* Stat Part # for 4.7?
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Message:
Chuck, thanks for bailing me out. I talked to a few ex mechanic friends from work & in the neighberhood today & they all said the exact same thing you did, maybe I should just email my questions to you first, tehe. By the way, I never liked Thermodynamics class, besides, I'm not working on a degree in Thermo, its in EE, seriously! Anyway, I'll talk to SpeedTweaks offline about it for the gritty details. I did do a few experiments & here is what I noticed: You can start your Dak in 90 degree heat & let it idle forever & the temp gauge won't go above 180 degrees, the fan clutch didn't even kick in. However, like you said & I experienced, any pedal to the metal driving or sitting in traffic on a sizzling hot day does cause the temp gauge to rise but it does restore to the 180 degree mark when normal driving conditions are resumed. Now that I understand that, I conclude with the utmost confidence, the Robert Shaw Tstat works just like it was designed! I would love it if one of SpeedTweaks products can make the Dak run cool even when putting the pedal to the metal on a hot day, we'll see.
2000 QC 4x4 Auto 3.55's 4.7L V8
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