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From: Snag <Snag_one@msn.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: Successful Transplant !
Date: Mon, 28 Oct 2024 13:19:17 -0500
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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 .