Date sent: Thu, 10 Feb 2000 10:12:56 -0600 (CST) From: Jon Pace Subject: [80] Transmission differences? To: 80_series@sgiblab.sgi.com Send reply to: 80_series@sgiblab.sgi.com What's the difference between the A442F and A343F transmissions? While looking for the transmission manual for my truck, I noticed a book covering 94-97 for the A442F and one covering 96-00 for the A343F, meaning both were offered in 96-97. I've got the A343F per my door tag, anyone know where the differences are. Strengths/weeknesses between them? Jon From: "Scott Tate" To: <80_series@sgiblab.sgi.com> Subject: Re: [80] Transmission differences? Date sent: Thu, 10 Feb 2000 22:58:40 -0600 Send reply to: 80_series@sgiblab.sgi.com From: "Jon Pace" > What's the difference between the A442F and A343F transmissions? > While looking for the transmission manual for my truck, I noticed > a book covering 94-97 for the A442F and one covering 96-00 for the > A343F, meaning both were offered in 96-97. > > I've got the A343F per my door tag, anyone know where the > differences are. Strengths/weeknesses between them? > > Jon The A442F trans was overbuilt according to the man that designed the LX470 & RX300 Lexus drivetrains. The A343F was introduced because of that, and the weight reduction. I never sell parts for an A442F..................... Ok well ONCE in the last 9 years, I priced a few parts on one. The price left him with one option...............replace the entire unit. HTH Scott From: "Willem-Jan Markerink" To: 80_series@sgiblab.sgi.com Date sent: Sun, 26 Mar 2000 15:10:08 +0100 Subject: Re: [80] AUTOMATIC TRANSMISSION types on 80's? Send reply to: 80_series@sgiblab.sgi.com On 23 Mar 00 at 21:50, mersa wrote: > Hi all, > > What types of Automatic Gearboxes are there on your 80's? > -L-2-D +overdrive > or > -L-2-3-D > > Mine has the second type(L-2-3-D which is commonly called D4 type)''I think it > depends on manufacture date!!!'' Yep, early ones are L23D, later ones miss the 3 option....I *think* this was done at the 92->93 changeover. > Also what are the advantages/disadvantages of both? > (some says that Overdrived types are more economic in fuel consumption-is > it?????) Don't think there is a difference between the two at cruising speed, onroad....both are 4sp transmissions. > But I experienced that my D4 type is more powerfull than the overdrived > types on long mountain roads. Same engine, 1HD-T? Or 1HD-FT? The FT can be a bit strangled at lower rev's (prudent factory settings, can be cured). > Any more experienced and good ideas???? PS: how's the communication with AAI on your intercooler going? I just read a neat story in a Dutch 4x4 mag, where two brothers, one with a HZJ-73, the other with a BJ-71, slowly upgraded their engines with the help of AAI....the HZJ now features a 1HD-FT with aftermarket intercooler and aftermarket turbo, 291hp @ 3600rpm and 660Nm(!) @ 2400rpm....part-time gearbox couldn't handle it, started sweating on the rear, so he also threw in a full-time box....now *that's* an upgrade I wouldn't mind for my HJ-60 either....;-)) (no way I want to triple power with rear wheel drive only!) The 13B-T in the BJ-71 was tweaked to 170hp @ 3400rpm and 420Nm @ 1500rpm....nice & low....:-)) -- Bye, Willem-Jan Markerink The desire to understand is sometimes far less intelligent than the inability to understand [note: 'a-one' & 'en-el'!] Date sent: Mon, 27 Mar 2000 06:53:53 +0000 From: "Robert B Antonson Jr." To: 80_series@sgiblab.sgi.com Subject: Re: [80] AUTOMATIC TRANSMISSION types on 80's? Send reply to: 80_series@sgiblab.sgi.com Willem-Jan Markerink wrote: > On 23 Mar 00 at 21:50, mersa wrote: > > > Hi all, > > > > What types of Automatic Gearboxes are there on your 80's? > > -L-2-D +overdrive > > or > > -L-2-3-D > > > > Mine has the second type(L-2-3-D which is commonly called D4 type)''I think > > it depends on manufacture date!!!'' > > Yep, early ones are L23D, later ones miss the 3 option....I *think* > this was done at the 92->93 changeover. > > > Also what are the advantages/disadvantages of both? > > (some says that Overdrived types are more economic in fuel consumption-is > > it?????) > > Don't think there is a difference between the two at cruising speed, > onroad....both are 4sp transmissions. Hello: The earlier transmissions the 440F were all manual shift with the L23D positions, the newer ones the 442F was basically the same except that they went electronic and the shifter was L2D with a electric shift button for the over drive. Still manual detent for the shifter to the drive position and the button to engage the overdrive. this happen in the 91-95 models. In 96 they changed to the 343F smaller transmission and same shift pattern. I hope this helps later Robear 94 FJZ80, New to me soon to have many goodies 88 FJ60, 85 4X4 mini truck (daily driver work truck) Date sent: Fri, 17 May 2002 03:33:12 -0700 To: dtlc@helios.net, landcruisers@tlca.org From: Drexx Laggui Subject: [DTLC] A440F or A442F? Send reply to: dtlc@helios.net May 17, 2002 (UTC -7) Ye Cruiser Dieties, When mating a powerful, non-Toyota diesel engine to a 80series auto tranny, which is better, in your opinion? A440F - 4 speed hydraulic transmission ? or A442F - 4 speed electronic transmission ? I'm researching for something that would hold up to high-torque but not easily get damaged... anybody know what is commonly mated to the Toyota 15BT-FT ? clueless, Drexx Laggui TLCA #11841 San Jose, CA, USA From: "HZJ80" To: Subject: Re: [DTLC] A440F or A442F? Date sent: Sat, 18 May 2002 10:14:43 +0930 Send reply to: dtlc@helios.net From: Drexx Laggui > May 17, 2002 (UTC -7) > > Ye Cruiser Dieties, > > When mating a powerful, non-Toyota diesel engine to a 80series > auto tranny, which is better, in your opinion? > > A440F - 4 speed hydraulic transmission ? or > A442F - 4 speed electronic transmission ? > > I'm researching for something that would hold up to high-torque > but not easily get damaged... anybody know what is commonly > mated to the Toyota 15BT-FT ? > > clueless, > > Drexx Laggui > TLCA #11841 > San Jose, CA, USA The differences are: Stall torque ratio: 1.88 Vs 2.0 Overdrive gear: 0.717 Vs 0.765 2nd brake: 4 Vs 5 The A440 was used for the 60 series, HZJ80 and FJ80. The HDJ80's (and later the FZJ80's) used the A442. Electronics wise, I failed to see any difference in the manual. Ian B To: "80scool_aus@yahoogroups.com" <80scool_aus@yahoogroups.com> From: "kev" Date: Mon, 31 May 2004 19:33:26 +1000 (AUS Eastern Standard Time) Subject: [80_aus] automagic ? Reply-To: 80scool_aus@yahoogroups.com Guys, looking for possible solutions to a problem with the auto on my 92 1hdt, 262,000kms...selector to D, takes off but won't change into 2nd however if you take off in 2nd and manually change to 3rd then D there is no hassle,cruises along hwy no probs,called into Fluiddrive Bendigo this arvo for test drive, they're not sure,put it on the hoist,no sign of fluid leak,tranny oil doesn't smell burnt....understand the auto is elec controlled?,it goes into fluiddrive next Monday,they want to drop the auto to look for metal mashing then look for elec problems if the guts is ok. Any comments most welc0me castlemaine kev 92 t/d offwhite To: 80scool_aus@yahoogroups.com From: "extreme_trans" Date: Mon, 31 May 2004 22:43:26 -0000 Subject: [80_aus] Re: automagic ? Reply-To: 80scool_aus@yahoogroups.com --- In 80scool_aus@yahoogroups.com, "kev" wrote: > Guys, > looking for possible solutions to a problem with the auto on my 92 > 1hdt, 262,000kms...selector to D, takes off but won't change into 2nd > however if you take off in 2nd and manually change to 3rd then D there is > no hassle,cruises along hwy no probs,called into Fluiddrive Bendigo this > arvo for test drive, they're not sure,put it on the hoist,no sign of fluid > leak,tranny oil doesn't smell burnt....understand the auto is elec > controlled?,it goes into fluiddrive next Monday,they want to drop the auto > to look for metal mashing then look for elec problems if the guts is ok. Any > comments most welc0me > > castlemaine kev > 92 t/d > offwhite Hi Kev it's Rodney here from Wholesale Automatics. I'm of the Strong belief that your transmission is in fact the Hydrolic version even though your I.D plate claims that it is a A442F. Toyota changed the design of the A440F transmission for the 91-92 model T/D and called them the first of the A442F's but thay are infact the A440F Hydrolic transmission. I beleave that the change from A440F to A442F was in 10/1992. Given your explination of what is going on you have a stuck govenor valve and when you manuely shift the transmission it over rides the govenor in second and then forces it to move when the change is done, this in some cases is all it needs to free the valve up for the rest of the day. You can tell that this is the case if it only does it when the transmission is stone cold but after it has warmed up it will change fine. If it was electonic transmission manuely shifting the transmission wouldn't make any differance as the transmission is Computer controled. If it is an electronic transmission as worst it would be the inhibitor switch but I beleave that you have a non electronic transmission. In this case something has to be sticking the govenor valve and this would be consided the real problem with the fix being an Over Haul. If you would like to contact me by all means give me a ring. Regards Rodney 03-97628004 or 0415393755 Wholesale Automatic Transmissions To: 80scool_aus@yahoogroups.com From: "danamotors" Date: Tue, 01 Jun 2004 00:03:14 -0000 Subject: [80_aus] re: automagic ? Reply-To: 80scool_aus@yahoogroups.com Hi Kev. I'm in the USA, I have a petrol converted over to a diesel, it is a 1991 truck with a 1990 1HD-T motor and the trans is the one that came with the diesel. It's the A440F hydraulic box. The eng/trans has about 250,000 miles on it. I bought it with about 240,000 miles, it had been well-maintained with only synthetics its whole life, and mostly used on the highway very little offroad, and even then fairly light offroading. Everything was fine until about 6 months ago. The trans started doing exactly what you described, it wouldn't take 2nd gear (or 3rd, etc) unless I manually shifted it, then it would shift OK for the rest of the day. When warmed up, or not allowed to cool down all the way, it was OK too. I was all ready to spend the big money to do an overhaul, I was going to go for the Wholesale Automatic Transmission Extreme unit (Rodney replied to your plea), as they come highly recommended, and I didn't want any further problems. When I eventually do need the transmission replaced, I will buy from him. Somehow, I found my way to a website that discusses oil and engine and transmission additives, so I decided to do some reading. the site is: http://theoildrop.server101.com/ubb/ultimatebb.php There's a number of forums, but I went to the one on Additives. I found that there were a number of listers who were raving about how this product, Auto-RX was doing wonders for their engines and transmissions. So I decided to try it. their website: http://auto-rx.net/ for the transmission additive. (they also have an engine oil additive, same as above except ".com" instead. I have no experience with the oil additive, only the transmission additive.) It's been about 1500 miles and about 2 months since I added the stuff. It took approximately 500 miles for anything to happen, but once it did, the improvement came quickly. After 1000 miles, the transmission is behaving perfectly. Now, I have no idea why. The manufacturer claims the product removes all traces of varnish, gunk, dirt, etc, from everywhere inside the autobox and torque converter, and dissolves it. After 1500 miles you're supposed to do a complete fluid-exchange. I am about to that stage, but the additive is still in the transmission right now. Maybe the stuff simply causes the seals to swell. If that's the case, I would expect them to return to their normal size once the chemical is removed by flushing, and hence I would expect the problem to return. But, from reading the forums I mentioned above, that doesn't occur. I will see what happens when I drain/flush the fluid next week. I am NOT a commercial for this stuff, I have no connection to any company that sells it, but I thought I'd pass along my first-hand experiences. I've tried many products for different problems over the years. Most are a waste of money, but every once in awhile something actually works. I tend to be more than a little skeptical of most additives and I am pretty surprised with this. I hope it actually does what it says it does. So far, so good. Dana To: 80scool_aus@yahoogroups.com From: "danamotors" Date: Tue, 01 Jun 2004 00:03:14 -0000 Subject: [80_aus] re: automagic ? Reply-To: 80scool_aus@yahoogroups.com Hi Kev. I'm in the USA, I have a petrol converted over to a diesel, it is a 1991 truck with a 1990 1HD-T motor and the trans is the one that came with the diesel. It's the A440F hydraulic box. The eng/trans has about 250,000 miles on it. I bought it with about 240,000 miles, it had been well-maintained with only synthetics its whole life, and mostly used on the highway very little offroad, and even then fairly light offroading. Everything was fine until about 6 months ago. The trans started doing exactly what you described, it wouldn't take 2nd gear (or 3rd, etc) unless I manually shifted it, then it would shift OK for the rest of the day. When warmed up, or not allowed to cool down all the way, it was OK too. I was all ready to spend the big money to do an overhaul, I was going to go for the Wholesale Automatic Transmission Extreme unit (Rodney replied to your plea), as they come highly recommended, and I didn't want any further problems. When I eventually do need the transmission replaced, I will buy from him. Somehow, I found my way to a website that discusses oil and engine and transmission additives, so I decided to do some reading. the site is: http://theoildrop.server101.com/ubb/ultimatebb.php There's a number of forums, but I went to the one on Additives. I found that there were a number of listers who were raving about how this product, Auto-RX was doing wonders for their engines and transmissions. So I decided to try it. their website: http://auto-rx.net/ for the transmission additive. (they also have an engine oil additive, same as above except ".com" instead. I have no experience with the oil additive, only the transmission additive.) It's been about 1500 miles and about 2 months since I added the stuff. It took approximately 500 miles for anything to happen, but once it did, the improvement came quickly. After 1000 miles, the transmission is behaving perfectly. Now, I have no idea why. The manufacturer claims the product removes all traces of varnish, gunk, dirt, etc, from everywhere inside the autobox and torque converter, and dissolves it. After 1500 miles you're supposed to do a complete fluid-exchange. I am about to that stage, but the additive is still in the transmission right now. Maybe the stuff simply causes the seals to swell. If that's the case, I would expect them to return to their normal size once the chemical is removed by flushing, and hence I would expect the problem to return. But, from reading the forums I mentioned above, that doesn't occur. I will see what happens when I drain/flush the fluid next week. I am NOT a commercial for this stuff, I have no connection to any company that sells it, but I thought I'd pass along my first-hand experiences. I've tried many products for different problems over the years. Most are a waste of money, but every once in awhile something actually works. I tend to be more than a little skeptical of most additives and I am pretty surprised with this. I hope it actually does what it says it does. So far, so good. Dana To: 80scool_aus@yahoogroups.com From: andrew lukies Date: Mon, 31 May 2004 22:08:05 -0700 (PDT) Subject: Re: [80_aus] re: automagic ? Reply-To: 80scool_aus@yahoogroups.com Gday Dana Thanks for that info, i can see how varnish would assist a governor to stick, and when it is disolved, the governor work properly again. Keep that oil changed regularly. Andrew