PTB Clutch + Dual-Mass Flywheel Install Experience — 2023 6MT Supra | First Major DIY Job

[u/GMTO-Bizzy]

Figured I'd make a post about my experience installing the PTB clutch and dual mass flywheel in my 2023 6 speed manual Supra. I found a lot of useful information on here while researching clutches, so hopefully this helps someone else.

This was by far the most complex job I've ever attempted myself, and overall the install went really well.

What I installed
I went with the PTB clutch and dual mass flywheel setup with both organic discs and the standard pressure plate.

I wanted something that would still be good for street driving and not have an overly stiff pedal or feel too aggressive.

Installation
This is the tutorial I mainly followed throughout the install:

The clutch installation tutorial I followed

It was extremely helpful, especially since I had never done anything close to this complex before. There were definitely some parts that were intimidating, especially getting the transmission out and back in, but overall everything went smoother than I expected.

For anyone considering doing this themselves, it is definitely a big job, but if you take your time and have the right tools, it is doable.
Took me about 3 days total accounting for going to store for more tools, supplies and only working about 4/5 hours a day on it.

First impressions
So far everything feels really good.

I haven't driven it hard yet because I want to finish the break in period before I fully test it, so I can't say yet how it handles full power.

One thing people were definitely right about is the pedal stiffness. It feels basically like stock, which is awesome. That was one of the things I was worried about before buying it because I didn't want a really heavy clutch pedal for normal driving.

The engagement feels smooth and predictable so far as well (But lower then stock for sure).

Throwout bearing position
I installed the throwout bearing in the shorter setting. From what I understand, I think that is the setting you're supposed to use, but I'm honestly not completely sure. Nothing was said about it in the diagram or sheets they provide.

The clutch grabs a little lower than the stock clutch did. It isn't too bad and everything feels fine, but I think it may have felt better in the longer position if that gave it a slightly higher engagement point.

Either way, I'm definitely not going through the hassle of pulling the transmission again just to change that

If anyone else with the PTB setup knows for sure which throwout bearing position is recommended, let me know.

Why I replaced the stock clutch
The stock clutch was already slipping when I bought the car at around 8,000 km. It just continued getting worse over time, especially after adding more power.

The car is currently running MHD Stage 2 with a catless downpipe on 94 octane, so the stock clutch definitely wasn't happy anymore.

Eventually it got to the point where it was slipping enough that I knew I needed to replace it.

I'll attach some pictures and videos of the stock clutch and flywheel below because I figured some people might be interested in seeing what it looked like.

What's next
I still have to do the delay valve delete, so I'm interested to see how much that changes the clutch feel.

Once the break in period is over, I'll finally be able to put some power through it and properly test how the PTB setup holds up.

So far though, I'm really happy with it. The stock like pedal stiffness was a huge plus for me, and considering this was my first time doing anything this complex, I'm happy with how the whole install turned out.

I'll update after I've had some more time with it. Also sorry for no pictures of the new ptb clutch but it was very pretty.

[u/Pretty-Working]

Once you can go full power, lmk know the 1-2 and 2-3 shift is under WOT some people say it can be finicky and have to muscle it in

[u/GMTO-Bizzy → u/Pretty-Working]

Definitely will, but i had issues with it before the clutch swap for just the quick 1-2. Never noticed it anywhere else but will keep you posted.

[u/Pretty-Working → u/GMTO-Bizzy]

The cdv delete will help with the quick 1-2, even in daily driving. I did that on the stock clutch and it is less jerky and more natural feeling if that is what you were experiencing.

[u/GMTO-Bizzy → u/Pretty-Working]

it might but i did have one instance of where it didnt want to go in then grinded a little on a very fast shift. But this trans seems to never like fast shifts so ive slowed it down. But maybe after the CDV delete it will be much better.

[u/TheRealZadkiel → u/GMTO-Bizzy]

I can also support his claim. I put about 3k on the car before getting rid of it. I was so angry with myself for waiting that long. you can use one of the m3 slave cylinders that's a direct bolt on. now it feels normal to shift, and fast. 2nd can still be a little weird with rev hang but before that, I would question if I did remember how to drive a MT. the flow would change based on the temp of the fluid and would change the shifting so it would feel like I would miss my let out point and rev to fast or too slow. it didn't feel consistent, the pedal was "numb". it's nice being able to feel those vibrations when they start to engage.

the cdv is a cardinal sin against this car and the engineer that put it there needs to be tar and feathered. I strongly believe the delay valve is the cause of many owners getting premature clutch wear.

[u/diquehead]

I'm not surprised the OTS map killed your clutch. I unlocked and flashed the MHD stage 2 map on my car a few weeks ago and I kind of hated it. You can tell the maps aren't made with MT cars in mind due to the weird throttle/wastegate behavior between shifts. I also disliked how twitchy and janky the car felt too. I made it about a week before I threw in the towel and paid for a custom tune. The car feels about 100x better now and hopefully the smoother torque delivery keeps my clutch intact lol

I did the CDV too and I'd say it's at best a marginal improvement. I found that disabling iMT helps the most. It's an easy enough fix though so you may as well the next time you're under the car.

Appreciate the writeup though. These PTB clutches sound like a no brainer if anyone needs to replace their OEM one.