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Topic: oil cooler pipes

in Forum: C3 Driveline Components


oil cooler pipes

Posted: 5/26/06 12:38pm Message 1 of 6
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does it make a difference which oilcooler pipe from the (transmission) is connected where to the radiator? i forgot the which one was connected where

to my idea on the transmission the the upper one is outlet
                                                           lower one is inlet

and on the radiator  the upper one is an outlet
and the bottom one is an inlet

so upper from transmission connected to the bottom one on radiator
and the lower one on transmission connected to the upper one on radiator?

to make it more clear what i mean i have added a picture/drawing


thank you
art-corvette



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oil cooler pipes

Posted: 5/26/06 3:18pm Message 2 of 6
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Australia
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Vette(s): 71 Coupe Black on Black
The upper on the Radiator is the inlet.  You have to think of how water cools.  The colder water falls as it cools, the radiator water will be hotter at the top and therefore will be better to draw from the bottom.  I would assume you would want to draw the hotter autofluid from the top of the trans and put it in at the top of the radiator to allow it to cool as it is forced to the cooler bottom of the radiator.


oil cooler pipes

Posted: 5/27/06 1:28am Message 3 of 6
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i agree with you... to me it would be more logical to make the upper on the radiator the inlet... but the assembly manual made me confused:


thought they might have a reason for it ?

art-corvette



oil cooler pipes

Posted: 5/27/06 3:07am Message 4 of 6
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PLATTSBURGH, NY - USA
Joined: 11/21/2001
Posts: 54
Vette(s): 1978 Silver Coupe (Andy)L48 with leather Oyster interior.(Born March 22, 1978) 2003 50th Anniversary Edition (Annie) Born January 14, 2003

The illustration indicates that Assembly #1 is the outlet assembly from the Trans, and #4 is the inlet assembly to the trans.  So what Chips58 said is true. 

Just my take on the drawing, seen a lot of drawing for various things illustrated in this manner.

Good Luck




oil cooler pipes

Posted: 5/27/06 8:19pm Message 5 of 6
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Techno mumbo-jumbo!!!
The fluid from the trans comes out of the top fitting on the trans. Normally, it will enter the rad. at the bottom fitting, come out thru the top of the rad., and return to the lower fitting on the trans.
(That being said....it really don't matter which fitting you use for "to & from". You're still using almost 200 deg. coolant to cool the trans fluid. A two or three deg. difference is not gonna make or break it.)
Bottom in-top out on rad. is normal routing. Either way will still work just as well.
I believe this method has less to do with thermal physics, and more to do with the siphoning effect of having the fluid return at the bottom of the rad.Adams' Apple38864.8738888889


Joel Adams
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oil cooler pipes

Posted: 5/29/06 7:36pm Message 6 of 6
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CUYAHOGA FALLS, OH - USA
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Vette(s): 1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

In addition, if you put the cooler inlet at the top, there will be an air pocket in the cooler that will not purge out.  This prevents the cooler from filling completely, and drastically cuts it efficiency.   By connecting the inlet of the cooler at the bottom, the air purges, and the cooler works much better.   

Always make the inlet the bottom.




in Forum: C3 Driveline Components


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