Path: ...!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder2.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Snag Newsgroups: rec.crafts.metalworking Subject: Re: Successful Transplant ! Date: Mon, 28 Oct 2024 13:19:17 -0500 Organization: A noiseless patient Spider Lines: 47 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Mon, 28 Oct 2024 19:19:20 +0100 (CET) Injection-Info: dont-email.me; posting-host="53f2779ca4e671ecb69b2fc3449bad1a"; logging-data="1183588"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+GYFyYDvTmmtUIFb/Y+PsXN4ZhFpymk64=" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 Cancel-Lock: sha1:+jT/ynaSGe7scPl/XPn/l53urIg= In-Reply-To: Content-Language: en-US X-Antivirus: Avast (VPS 241028-6, 10/28/2024), Outbound message X-Antivirus-Status: Clean Bytes: 3632 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 .