Path: ...!eternal-september.org!feeder2.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Clare Snyder Newsgroups: rec.crafts.metalworking Subject: Re: Successful Transplant ! Date: Sun, 27 Oct 2024 19:30:00 -0400 Organization: A noiseless patient Spider Lines: 93 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Injection-Date: Mon, 28 Oct 2024 00:29:59 +0100 (CET) Injection-Info: dont-email.me; posting-host="13e04afe65538b735d423368a84df0f9"; logging-data="691980"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19edhmmcNnbJ72vOQEsH4e+" User-Agent: ForteAgent/8.00.32.1272 Cancel-Lock: sha1:NTjet11HAzF3iu6UgNZ8a638vxg= Bytes: 6592 On Sat, 26 Oct 2024 22:17:18 -0400, Clare Snyder wrote: >On Sat, 26 Oct 2024 14:27:15 -0500, Snag wrote: > >>On 10/25/2024 4:17 PM, Clare Snyder wrote: >>> On Thu, 24 Oct 2024 17:15:56 -0500, Snag wrote: >>> >>>> On 10/24/2024 3:45 PM, Bob La Londe wrote: >>>>> On 10/21/2024 3:29 PM, Snag wrote: >>>>>>    I picked up the truck axle today ... Got it bolted into place >>>>>> before my back started complaining . It has a right to complain , I've >>>>>> abused it the last few days harvesting firewood . >>>>>>    I'm eagerly anticipating getting this project finished , I was >>>>>> hoping to have the truck ready by next weekend for Beanfest . Looks >>>>>> promising so far , I've got all the new parts for what I want to >>>>>> replace . This is going to be interesting , my first experience with a >>>>>> limited slip diff . Dropping from 2.73:1 to 3.42's is going to make >>>>>> things a bit more lively too . >>>>> >>>>> I was going to write up some of my comments on limited slip and locking >>>>> differentials, because I have had both, but the experience and which >>>>> performed exactly how kind of runs together in my memory. >>>>> >>>>> The 03 Silverado 2500 (2wd) had auto locking rear. >>>>> The '17 Jeep JK had limited slip.  I can't recall if it was rear only or >>>>> front and rear. >>>>> >>>>> The 07 Silverado had rear autolocking >>>>> The 24 F250 has rear electric locking. >>>>> >>>>> I have felt the affects and it definitely helps in the soft stuff. Can't >>>>> speak to the slippery stuff.  I try to avoid that at all cost. >>>>> >>>>> Not sure exactly how posi differs from limited slip or auto locking, but >>>>> its the real deal for street racing. >>>>> >>>>> FYI:  I am thinking about building a stroked 351 and pushing it out to >>>>> around 401.  Not today though.  Looking for gobs of mid range for towing >>>>> torque with a long duration cam rather than a high reving high HP engine >>>>> with a high lift cam.  I sold my 07 Silverado and my Jeep.  Now I only >>>>> have the new 24 Ford for a tow vehicle.  I feel naked without a >>>>> backup... er tow vehicle that is. >>>>> >>>> >>>> I got the brakes on yesterday , adjusted them this morning and bolted >>>> the bed back on . Took it for a short ride after I finished , it seems >>>> to drive the same as before . Except when I punch it on gravel it leaves >>>> 2 gouges instead of one . The one drive train "problem" I have left is >>>> torque converter lockup . It ain't locking up . I'll need to do some >>>> testing , it's probably related to all of the original pollution >>>> controls going missing while the truck was out of service . My poor gas >>>> mileage probably has something to do with that . There are manual >>>> workarounds , but I really want this to be automatic . >>> Bad temp sensor or loww thermostat temp will do that - has to be >>> warmed up to "operating temperature" before it locks. VSS is the other >>> input - has to be over a certain speed. Brake light switch will also >>> prevent lockup (cannot lock if the switch says the brakes are on). >>> Before digging into ANY of that make sure the lockup function actually >>> works by installing a manual switch. You can automate the whole thing >>> with simple relay logic - the speed control is the most complicated. >>> An Arduino simplifies the whole thing significantly and actually >>> costsless than the 3 relays required for relay logic but you need to >>> wrap your head around the boolean logic required for the arduino - and >>> the basic programming involved. >>> >> >> Clare , I will probably hook up a switch to test function , but it >>will be temporary - and since the solenoid in the trans is brand new >>when rebuilt less than a thousand miles back I fully expect it to >>function properly . My understanding from the manual is that the lockup >>is solely controlled by a vacuum/electric switch which is controlled by >>engine vacuum . There is no temp dependent switch in the circuit . I do >>know for a fact that the circuit was working before the trans was >>rebuilt (and a bunch of vacuum lines and emission control devices got >>lost) , the radio is on the same fuse and because the solenoid in the >>trans was shorted it would blow that fuse every time it energized . > If it only has the vac switch it will be ugly when the engine is cold >and under braking. If it has a low gear lockout that all gets better - >(Some early TH350s with locking converter used the simple setup but >even THEY worked better cold with a thermo lockout - and I believe >they still had a speed lockout (built into the trans) operated by >governor pressure. The newer stuff does it all with the TCM reading >VSS and CTS as well as brake - allowing better compression braking as >well as transparent engagement and cold operation. Your transmission MAY also have a temperature switch inside which will prevent lockup on a colt transmission - and if defective COULD prevent lockup - perios. SOME 700R4 traanys ahve the switch, some don't. SOME have the 3/4 switch, some do not. Only way to know is to drop the pan. Also, some have one wire (self grounded) solenoid, others have 2 wire. One wire solenoid USUALLY has external 4th gear pressure switch and will require a relay to enable it or you risk cooking the switch (if it is not a heavy enough switch)