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Torque Converter Question; kindly help

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Old Oct 7, 2017 | 06:21 PM
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Default Torque Converter Question; kindly help

1970 454 with standard auto transmission;

Just bolted the auto transmission onto the engine after it has been rebuilt with new torque converter supplied. It has just been suggested to me that I should have put 1/2 pint of transmission oil in the torque converter before assembly; does this matter?

Note I did fully lubricate the oil seal in the bell housing where the the torque converter sits prior to reassembly.

Kind regards
Paul
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Old Oct 7, 2017 | 07:18 PM
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My transmission guy told me that once everything was together to put about 11 or 12 qts of fluid in it, start it up and run it slowly and cycle through the gears, then shut it down and check the levels.
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Old Oct 7, 2017 | 08:26 PM
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Originally Posted by PBCloud
1970 454 with standard auto transmission;

Just bolted the auto transmission onto the engine after it has been rebuilt with new torque converter supplied. It has just been suggested to me that I should have put 1/2 pint of transmission oil in the torque converter before assembly; does this matter?

Note I did fully lubricate the oil seal in the bell housing where the the torque converter sits prior to reassembly.

Kind regards
Paul
I doubt any damage would occur to the torque converter as oil will get pumped into it the moment the engine is cranked.
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Old Oct 7, 2017 | 10:04 PM
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Completely dry unit....dump 4 quarts into it, start it, dump 4 more into it then start watching the stick starting at 10 quarts. Empty converter is a non issue. Good to put a little fluid on the seal like you did. Never dump 11 quarts in before starting and always check level while in park on level ground while running. Take it around block and re-check fluid and check for leaks. Best to have rear wheels off ground or person in car in case linkage is off/maladjusted. When the running car picks up enough fluid to engage, it can run over you.
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Old Oct 7, 2017 | 10:36 PM
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No you will be fine, the pump will fill it up quickly. Over the years i have just added 1-2 litres in the converter before installation,add 4-5 litres in the pan, start it and keep filling and checking. Never hurt a trans doing this.
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Old Oct 8, 2017 | 03:52 AM
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Originally Posted by Grumpy 427
No you will be fine, the pump will fill it up quickly. Over the years i have just added 1-2 litres in the converter before installation,add 4-5 litres in the pan, start it and keep filling and checking. Never hurt a trans doing this.
Thanks guys
Paul
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Old Oct 8, 2017 | 10:50 AM
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Yes, you add a quart to the tc before installing. It is the same idea as using assembly lube and priming the oil pump before starting a rebuilt motor

As to the automatic transmission. Dump in what ever the spec sheet amount is minus 2 quarts fire the motor and with the brake on put it in f and r. Shut down and add one more quart. Then test drive to get it up to working temp. Then check the level. Never over fill


Big coolers, different tc sizes, and after market pans change the total volume.
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Old Oct 8, 2017 | 12:05 PM
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They're not "dry" inside for starters. They're not like an engine that requires fluid pressure to prevent metal on metal contact. They have needle bearing thrust washers and as I mentioned the aren't assembled "dry". The fluid suction from the pump is picked up through the floor of the pan through the filter inlet. That's why you dump 4 in, start it, dump 4 more in....the pump within seconds will fill and distribute fluid throughout passages with open paths through the valve body and case. I worked at a trans shop for 20 years and we always just installed them "dry". Never a problem. I guess it all depends on who you ask....
Opinions...everybody has one.
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Old Oct 8, 2017 | 03:58 PM
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I've never worked on stock tc or transmissions. Only high quality. I've sawn the TC in half to inspect them and flushed them with solvent after rewelding and blowing them out with air

I call that pretty dry and I don't take chances on $1100 TCS or many thousand dollar transmissions
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Old Oct 16, 2017 | 02:40 AM
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Originally Posted by jimvette999
They're not "dry" inside for starters. They're not like an engine that requires fluid pressure to prevent metal on metal contact. They have needle bearing thrust washers and as I mentioned the aren't assembled "dry". The fluid suction from the pump is picked up through the floor of the pan through the filter inlet. That's why you dump 4 in, start it, dump 4 more in....the pump within seconds will fill and distribute fluid throughout passages with open paths through the valve body and case. I worked at a trans shop for 20 years and we always just installed them "dry". Never a problem. I guess it all depends on who you ask....
Opinions...everybody has one.
Many thanks to all of you for your responses.

Paul
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Old Oct 16, 2017 | 04:35 AM
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I have always dumped a quart in just in case it was assembled dry. But as a torque converter fills within a few seconds I'm probably not accomplishing anything.
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