Broc Luno

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About Broc Luno

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    Broc

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  • Lexus Model
    RX 350 2009
  • Lexus Year
    2009

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  1. OK, I been digging and digging. Been to all sorts of off-road after market and race after market vendors, and no Posi's available ... It is believed that this is the Toyota 6.7" ring gear diff ... But Toyota made lots of OEM Posi's it seems. The RX uses a differential carrier and gear selection designated -02A as shown at the bottom of the build plate in the door jam. This rear carrier and differential were available with a Posi (Torsen), all gear - no clutch, center section in RX's from 99 to 00. Then Lexus dropped the option. The same rear end was used in RAV4's, Highlanders, and RX's for many years. Any independent suspended vehicle that shows -02A can prolly use this rear end ... If you put this phrase into the search block in eBay, you will come up with a selection of used OEM LSD differential carriers. The wrecking yard interchnage number is 440-58865A Carrier Rear 2.928 Ratio Locking Fits 01-03 HIGHLANDER
  2. What look? Something like this?
  3. I know it's a small audience, but I'd like thread for Off-Road. Most members do not go on dirt, but some do. Some even modify their vehicles. As the Gen I and Gen II vehicles age, they become candidates for younger buyers who want to go to the beach (Sand & Dunes), some do deeper forest drives, etc. I go off the paved way in many forms. I personally don't try hard core stuff, but a few folks have tried parts of MOAB in an RX ... If a bone stock Kia Sorento can go places, a mildly modded RX certainly can. And it can do it in more comfort and style 😄 I think one thread where we could look stuff up (part numbers or after market options), get ideas, see others adventures, would be a good thing 🙂 Example, not mine ...
  4. OK, more Posi Diff info (from a Rav4 forum): This is what I found on toyodiy: 41110 carrier assy, differential, rear 41110-42011 final gear ratio=41:14=2.928 (open) 1 € 2,110.35 41110-42031 final gear ratio=41:14=2.928, w(lsd) 1 € 3,461.99 41309a shaft sub-assy, rear differential side gear 41309-32020 2 € 120.94 41309-42010 w(lsd) 2 € 178.48 41334d ring, shaft snap (for rear differential side gear shaft) 90520-22012 2 € 2.37 90521-28004 w(lsd) 2 € 0.99 As far as I can see, these three parts are the only ones that differ between the open differential and the LSD. The pictures posted by toyodiy don't show any visual difference. On another forum, one member claimed that recently (2010, February) he was quoted by Toyota "only" 2500 pounds in order to have an LSD fitted. So I went over to Concelli Toyota parts and looked it up: SKU: 41110-42031 (But listed as discontinued) Other Names: Carrier, Carrier Assembly Differ Description:4 wheel drive, with limited slip. 4wd, with limited slip. RAV4. From 4/96. Replaces: 41110-42030 (But listed as discontinued) Not conclusive, but RX's use the 41110 Carrier Assembly too ... So I jumped over to Highlander first year (USA 2001) and started to look at rear diffs. Came up with this: SKU: 41301-48020 Other Names: Case Sub-Assembly Diffe Description:HIGHLANDER; W/LIMITED SLIP Which confirms the Unicorn part numbers - Yeah It's also still available as a Toyota part in the system. This is the Torsen center section that Toyota calls the differential vs the whole rear carrier which we might typically call the differential in used parts speak. But as shown in the RAV4 comments above - it does require side gears (spider gears) and snap rings. But I think it can still be built with OEM parts - yeah !!
  5. As far as tires go on stock rims, I'm thinking 235/R65x17 which are 29" tall (0.5 over stock), or 255/R60x17 which are also 29" tall, but have almost a full inch more thread width 😄 I've been thinking wheels all wrong. Double checked "positive offset" and that moves the wheel hub out away from the the rim center line. Backwards of what we want to get tire clearance. We want the rim to move out away from the hub and suspension. So we need to reduce positive offset ... So now thinking wheels with maybe 25mm positive offset to move the rim out w/o spacers ... Or stock wheels (35mm positive offset) and 1" spacers so you end up at 10mm positive overall 🙂
  6. I'm posting in the Gen II Forum also in case those folks don't look in the Gen I Forum. It seems there was/is a mythical Unicorn among RX's. In the early model years there was an optional Torsen posi-traction rear differential. I'm very keen on finding the parts to make that happen in a 2009 RX 350. So I went looking in the Toyota parts stream. I was searching the parts at a web site called Toyota Parts Overstock, or something similar. I was looking to see if some, or all, of the internals from an earlier rear diff would fit in a latter one? So I concentrated on the center section (the casting that carries the ring gear) P/N 41311J in the diagram. As I honed in on that part, I got a parts diagram with notes that that listed the years and models. The internals seem to be an 8" 2-pinion (spider gear) "V-6" diff that was commonly used on most everything: TOYOTA: 7 models, 305 variants between 1982 and 2010. Fits CAMRY, CELICA, HIGHLANDER, PREVIA, RAV 4, SIENNA, VAN And on page 1 at the bottom are some variation notes about the shape of the spider gears. And under that is a note about the model RX300 ... The rear end in a Lexus RX might be designated as an MCU15 ... Tthis is not conclusive proof of course, but aken all together, it seems to indicate that minus some variations in attachment, rubber isolation supports, and spider gears; this same rear end (internals) have been used in RX's from day one through some time in 2010. So the idea of finding a rare early RX 300 posi rear diff is possibly a good one. And with changing the external bits that make up the year model mounting variations, might actually fit a Gen II RX 350 ... I have to do more research, and prolly digging at Pick-&-Pull looking at Highlander and RX models from various years. But if what I'm reading is true (?), we could use the RX 300 Torsen posi in later models ... The trick will be to get a VIN number from an early vehicle with a Torsen factory installed. And use that VIN number to order the internal parts through Toyota's various web sites to build up a modern version (housing & mounts) to fit the vehicle of interest. Or rebuild the one we have with selected new internals. See attached for info: Lexus RX Rear Axle Housing.pdf
  7. Ot seems there was/is a mythical Unicorn among RX's. In the early model years there was an optional Torsen posi-traction rear differential. I'm very keen on finding the parts to make that happen in a 2009 RX 350. So I went looking in the Toyota parts stream. I was searching the parts at a web site called Toyota Parts Overstock, or something similar. I was looking to see if some, or all, of the internals from an earlier rear diff would fit in a latter one? So I concentrated on the center section (the casting that carries the ring gear) P/N 41311J in the diagram. As I honed in on that part, I got a parts diagram with notes that that listed the years and models. The internals seem to be an 8" 2-pinion (spider gear) "V-6" diff that was commonly used on most everything: TOYOTA: 7 models, 305 variants between 1982 and 2010. Fits CAMRY, CELICA, HIGHLANDER, PREVIA, RAV 4, SIENNA, VAN And on page 1 at the bottom are some variation notes about the shape of the spider gears. And under that is a note about the model RX300 ... The rear end in a Lexus RX might be designated as an MCU15 ... [Nope - MCU15 is the designation for the Lexus Service Manual for the RX 300. I can be found on-line by Googling in MCU15 and Manual] Tthis is not conclusive proof of course, but aken all together, it seems to indicate that minus some variations in attachment, rubber isolation supports, and spider gears; this same rear end (internals) have been used in RX's from day one through some time in 2010. So the idea of finding a rare early RX 300 posi rear diff is possibly a good one. And with changing the external bits that make up the year model mounting variations, might actually fit a Gen II RX 350 ... I have to do more research, and prolly digging at Pick-&-Pull looking at Highlander and RX models from various years. But if what I'm reading is true (?), we could use the RX 300 Torsen posi in later models ... The trick will be to get a VIN number from an early vehicle with a Torsen factory installed. And use that VIN number to order the internal parts through Toyota's various web sites to build up a modern version (housing & mounts) to fit the vehicle of interest. Or rebuild the one we have with selected new internals. See attached for info: Lexus RX Rear Axle Housing.pdf
  8. Thanks for the tips. I will reach out. I have an inquiry to Australia to see if the option was available there. If the guts of the 99~00 diff will fit the Gen II carrier, I might go that route ? I don't mind building a diff on the bench from a salvage carrier assembly, then swapping when it's in for service ... I don't know anyone who speaks/reads Russian to help find the parts and arrange the shipping. I might look around at the JC or somewhere for a Russian language person ... I'll check out PartsouQ and see if they can help 🙂
  9. But still true. Many unique features and discussions about them ... I don't mind being segregated 😎
  10. Thanks, but I was referring to the rear diff. I want to install a Torsen center section in the rear diff 😈
  11. OK, more info. Apparently the Toyota Highlander was available in Russia in the same model years as the RX 350 with a Torsen posi-trac rear differential. There are lots of used ones for sale on Russian dismantlers web sites. The Toyota part number for a complete rear diff carrier assembly is 41110-21071. If you enter this with the word Torsen you'll get a slug of images of the diff on display and for sale. So what is the differential center section P/N from Toyota with the Torsen set-up ??
  12. Excellent thread on installing nice hitches on RX models 🤠
  13. Yes, because the topology is different. The power to the rear axle is different. There is no center differential. Modifications are different. Owners primary rational is different. And maintenance is different ...
  14. OK, more info. Looked on RockAuto's web site and compared brake rotors between 3.5 Camry and RX 350. 11" rotor on Camry, 12.5" rotor on Lexus. So 17" is minimum wheel size. All 16"ers are out ... Now, what's the biggest 17 tire that will fit stock suspension ??? And since my preferred vintage is 2009, the limiting factor is clearance around rear strut assembly. But, we can play games with wheels to get a bit more positive off-set. RAV4 wheels have 45mm off-set, so they move out a bit and can more easily handle a wider section tire. Same hub center and lug bolt pattern. There are decent used steel wheels available for the RAV4 in 17" & 7" width that would be ideal for work on desert roads and trails where you have to worry about rocks cracking the bead of an alloy wheel. They'll just bend a steel wheel slightly, but you'll keep your air and get home ... So far, tire choice is: Cordovan Wild Trail Touring Cuv - 235x65r17 $81 and free shipping on eBay. "Excellent value, quality and performance for Crossovers, SUVs and Light Trucks. The Wild Trail Touring CUV provides a smooth, comfortable ride,all-season traction performance and superior durability " all packaged in a stylish design that promotes even wear, enhanced steering stability and handling responsiveness." Product Specifications Tire Size: 235x65R17 Part#: CO-WTX82 Serv Desc:108 H UTQG: 480AA Sidewall: BW Treadlife Warranty: miles Max Load: 2,205 lbs Inflation Pressure: 2,205 psi Tire Size: 10/32 Tire Weight: 34 lbs Rim Width Range: 7" Sect. Width: 9" Overall Diameter: 29" Features & Benefits All-season, on-highway performance at an economical price Five-rib tread design for a quiet, comfortable ride Wide circumferential channel design delivers excellent wet-road performance Progressive size lineup covers many popular SUV, CUV and Minivan fitments In the desert you want cheap strong tires. Rocks are your worst enemy. Goodyear Wranglers will last about a day ... These tires are only 1/2" taller than OEM and the added offset of the RAV4 wheel ought to make it clear the struts on the inside ... Anyone try this combo ??
  15. Well I'll be contrary. There are members here with 400K on the RX's. Not everyone will go that far. But a well maintained one should go a lot further than 100K ... But Judy is right about it needing stuff. Just factor that into your purchase. In the next month or two, I'll be buying a fully loaded 09 RX 350. I assume it'll need around $4K worth of service, unless I get very, very lucky. But I have not bought a used vehicle with less than 85K in 40 years. Most with over a 100K. That's where the price break is. Low mile RX's go for $14K and up. Ones with warranty's go for $16K and up ...