6 speed shenanigans. RA60F swap to RC62F

It's the Shaft, sorry missed the spline part & just got around to it. I'm very relieved ...

so a 3rd gen 6MT DriveShaft DCSB, would fit a 2nd gen with the RC?

If I get the factory shaft for my rig, I would need to send it out to another province, to get cut & balanced..

Edit: 3rd gen driveshaft isn't a bolt-up with a 2nd Gen with an RC62 of the same body config. Center carrier bearing is wider and bigger.. .

 

Just wanted to bump this thread and thank @BillDaCat8 once again for all the info here.

Just purchased a 2019 RC62F and have plans to swap it in to my auto DCLB so using all the info I can find. Thanks again!

 

This is what I'm looking to do in my DCLB. This seems like the easiest route for an MT swap since you don't need to change the lengths of the driveshafts.

 

https://www.tacomaworld.com/threads/core-short-shifter.799611/#post-28653212

 

Kasbien's kit showed up today from the Great White North along with some Canuckistani candy I've never seen in the States. I'm stoked! This guy is the real deal!! Thanks bud.

 

So are you saying that we can't get an RC62 and just throw a 3rd gen rear drive shaft for the same model/configuration? I thought that in earlier posts it had been determined that this would work as well as the front drive shaft.

 

Length wise works perfect, but The center carrier bearing on the 3rd gen is an inch wider than the 2nd gen, each mounting hole is 1/2" pushed out on the 3rd gen DS. I bought one anyways, and I plan on cutting the welds on the drop-down brakes, that hold the carrier bearing, and re-weld them an inch wider overall.. should be fine, just gotta make sure angle don't change, and pray for no vibes..

I figured this is better than getting a 2nd gen DS and cutting down. 3rd gen DS would be a bolt-up after this adjustment..

I think the Automatic 2nd Gen DS, would work for an RC trans, since the Auto trans is an inch longer then than RA transmission.. but might wanna double check that.
I want The 3rd gen DS because it's beafier

 

Why not just keep and use your 2nd gen shafts? The RA and RC trannys are the same length.

 

RC is an inch longer than an RA

 

Oh wow... that's the first I've heard of that... hhhmmm.... don't have access to a welder, but may need to look into that and solutions for it... well damn I was about to bite the bullet on all the parts for my dcsb conversion to the rc62 , but that may put a small damper on that.

 

My bad. Re-reading the thread, you're right: the RA is 27", RC is 28". I'm doing the swap in my auto DCLB and the outgoing A750f is the same length as the RC so had it cataloged in my head that all the trannys were the same length but stand corrected.

Just have the driveshafts modified by a competent shop. They need to be removed anyway. Or find some 2nd gen automatic trans shafts for your cab configuration. You'll be scouring car-part to find an RC tranny so just add driveshafts to the search.

 

I need some help with this,

Short background: I installed the RC, put about 40k miles so far. Since day one of the install, There was a vibration that was not of the driveline angle type. Under 1/2 throttle or more load, it goes away. if the gears are floating its not there. It's only when there is a partial load with throttle, especially 3rd gear and up.
I replaced the driveshaft since the spline was loose and center bearing rubber was falling apart, much better but still there. It doesn't happen all the time, but when it does, if I engage the clutch and disengage, it smoothest out quite a bit.
The new shaft is new from a 3rd Gen, much beefier at the splines, the angles are all good now, those vibes are gone post a new leaf-pack install.

My main focus now is the clutch/throw-out bearing/pressure plate combo, attached to a URD heavy flywheel. since the Vibes smooth out when the clutch pedal is cycled, could it be the friction plate is off center? or the throw out bearing being loud, quiets down when pedal is cycled.

per this thread's info, clutch assembly is 2nd Gen flywheel & friction plate, 3rd gen TOB & pressure plate... But any info on whether or not a 3rd gen friction disk would work? I would like to replace the TOB for the noise, and while apart address maybe the source of the strange vibe...
it could be also something internal in the transmission, but it had 10k miles on it when purchased ...

so the main questions: would a complete 3rd gen clutch kit bolt up to the 2nd gen FLywheel? has anyone experienced those kind of vibes?

 

Yes, the 3rd gen clutch kit will work. the disks are the same size and spline. The pressure plate has the same bolt pattern and diameter. The fingers on the3rd gen pressure plate have a smaller diameter where the throw out bearing rides. the 3rd gen throw out bearing is different along with the factory release fork.
The only thing I can think of for the vibration would be trans or flywheel clutch assembly. If you're going to pull the trans and replaced the TOB, I would suggest sending the flywheel to a machine shop to check balance and trueness. Then the only thing left is the trans.
Also, make sure you have both dowel pins for the trans. I lost one and had so issues with vibration and TOB releasing.

 

Thanks for that info.. the flywheel was checked before install when it was machined, I feel like that would be a constant vibe, this stuff comes 'n goes... I'll double check the dowel pins, now I'm thinking, there was only one there...

 

For all those that swap to the RC62 while converting to 4wd in a pre-runner access cab and use the auto trans mount instead of the manual trans mount.

I suggest you put a little drop into the cross member you build. This allows the trans and t-case to sit a little below the cab instead of almost touching it.

 

seems like a good idea to have Tilton hydroTOB on both RA60F or RC62F
More work for the latter requiring changing to different trans
considering that changes the sleeve

is it super needed to switch at that point, aside minor differences like ratios

as in worth the high amount of work and cost, seeing RC62’s around $1900 to replace a trans that otherwise isn’t broken in half or anything
Don’t know why that is. Bought a 6spd Audi trans for a couple hundred bucks, same year. Not like there’s a market demand for them.

downing the truck for weeks becoming a project car sounds hell

price seems to creep into the territory of what one can probably get a whole LS GM V8 kit with manual trans that’s more power, but likely more work to make run

Toyota parts site calls RC62 sleeve “Land Cruiser” - I wonder if the same is used in 70 series 5speed.

would make sense to take from that.
statement from Toyota chief truck engineer “70 series LC sets global standard for reliability reputation designed for roughest use scenario”

Searched parts catalog
70 LC
sleeve shows same PN 33131

 

Really not much more work... a few things here and there such as the drive shafts, but you'll have to take the driveline from trans back to add the hydro tob to either transmission. The RC62F just has different gearing a double overdrive and better bellhousing/ shaft vs the all aluminum RA60F. Only big difference is that the front and rear drivelines are slightly different and you have to trim the area where gear shifter comes up through tunnel. But all that is mentioned through the thread if read in its entirety.

 

Why does this seem like a good idea for the RC62F?

If you exclude the actual swap from one transmission to the other, I don't think the work to swap the TOB is any different between the two, in fact it might be easier on the RC62F, depending on how you mount it.

I'm not sure who is swapping for which reasons (gearing vs. TOB design change), but if it was between replacing the RA60F's bellhousing and swapping in an RC62F, I'd seriously consider the RC62F. Personally, I'm not sure I'd consider a different TOB unless it seemed to be a well-validated design. I haven't seen a well-validated design for the RA60F. Tilton might be, but how many people have actually used them?

Yeah, I don't think I'd spend ~$2000 for a used RC62F when a new one can be had for $3000, that's for sure. Not sure what the deal is on the used pricing for these things.

Not entirely sure why/how the Toyota site listed anything from the RC62F as LC70-related, also you've missed a few things in your attempt to cross reference these parts, but no, the RC62F part is not Land Cruiser 70-related. If for some reason you were looking at the Tacoma 2.7L R156F part (33131-35031), it was used in some LC70 Prado models back in the early/mid-90's. Current LC70's use the R15xF or H15xF 5-speed transmission. Again, the R15xF is similar to the Tacoma 2.7L transmission, but not the RC62F.

The RC62F part number is 33108-04010 and is only shared by the Tacoma RC60F (2024 2.4L Turbo).

FWIW, the number you see in Toyota's parts illustrations is typically the PNC (Part Name Code), a 5- or 6-digit part identifier, not the part number. It's only a part number if it's 10- or 12-digits. Typically you use the PNC (e.g., 33131) to find the 10- or 12-digit part number (e.g., 33131-35031). Almost all Toyota manual transmissions will have 33131 in their diagram, but they're not all the same part, obviously.

Jeff

 

follow-up: yes, one dowel pin was missing, installed... It's so smooth now, even the TOB is quiet at idle, shifts so good, thanks again!

 

I am glad to hear this!!!! great news and such a relief. I hope you enjoy the truck and many miles of driving.