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   rec.crafts.metalworking      Metal working and metallurgy      215,319 messages   

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   Message 213,823 of 215,319   
   Snag to Jim Wilkins   
   Re: Successful Transplant !   
   28 Oct 24 13:19:17   
   
   From: Snag_one@msn.com   
      
   On 10/28/2024 7:08 AM, Jim Wilkins wrote:   
   > "Snag"  wrote in message news:vfmm48$lo8n$1@dont-email.me...   
   >   
   >    I'll check with the guy that built it this week . It's possible that   
   > the rebuilt converter he supplied doesn't have lockup , I understand   
   > that some don't but that may be an aftermarket thing   
   > Snag   
   > --------------------------------------   
   > https://gearstar.com/what-is-lockup-torque-converter   
   >   
   > A torque converter is like one fan blowing on another fan to transfer   
   > rotation while allowing slippage without wear, though it wastes energy   
   > as heat. The lockup is a clutch that connects the two fans (turbines)   
   > together when conditions allow. The indication of lockup is the tach   
   > needle moving in sync with the speedo needle instead of jumping when you   
   > change gas pedal pressure.   
   >   
   > https://fitzequipment.net/how-to-test-a-torque-converter/   
   > In Drive with the brakes locked full throttle engine RPM should be   
   > around 2000 unless you have the actual specs.   
   >   
   > Torque converters developed the simpler fluid couplings of the late   
   > 1930's and were highly improved for WW2 airplane engine superchargers,   
   > to isolate crankshaft power stroke vibrations from the high flywheel   
   > inertia of the compressor rotor.   
   >   
   > https://en.wikipedia.org/wiki/Hydramatic   
   >   
      
      Ummmm Jim ...   
      
      I found out today that basically all OE TC's that fit 700R4 trannies   
   are capable of lockup . I also learned that the tick coming from mine is   
   most likely to be internal since there are no loose or too long bolts in   
   there . And with the flywheel cover off it is a lot LOUDER . As I said   
   I'll be talking to the shop that built the trans later this week . I   
   know for sure it ain't lockin' up because the tach needle tracks with   
   throttle instead of with speedo .   
      I was going to do it today , but we were out of buns - the grandson   
   is up for a visit and wants brats-n-tots for dinner - and I'm the baker   
   . The last batch - hot dog buns - has about 13 minutes left on the timer   
   ...   
   --   
   Snag   
   Voting for Kamabla after Biden   
   is like changing your shirt because   
   you shit your pants .   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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