World's First 2JZ with M4 DCT Swapped E30

[SLEEPYDUB]

Update:
Swapped to a PHR S23, Next Gen 6870, Deepmotor Intake Manifold, 90mm TB, and R35 Coils.
Dyno'd at 940whp @ 31psi. Going to swap in a Forged Billet Main bottom end and some headwork and shoot for more next.
Entering Street Car Takeover Dallas in August, and Rocky Mountain Raceweek 2.0 in September.

[SLEEPYDUB]

Some seriously impressive numbers!

How has the clutch pedal been working?

Thank you. Seems like the clutch pedal is fine, though I'd like to get a stiff spring in there to mimic a hydraulic clutch feel.

Were have the new exhaust completed with the PHR S23 equal length manifold, and 4" downpipe to 4" Oval mid pipe, to 4" round exit. It's sounds insane now, very iconic supra like. Should have picked up some power as well. Hoping to get low 4s out of it this weekend.

Overall goal is a 3.90 as the record on Dragy right now is a 3.91, but that's overseas. We currently have the fastest in the states for 60-130 posted on dragy.

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[SLEEPYDUB]

Very fast. What's the size of that intercooler core?

Thanks. We should be going to the track next week for some 1/4 miles times and see if the 60-130 will improve with a peppered surface.

The Core size is 12.5" X 22" X 3.5

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[Panici]

Some seriously impressive numbers!

How has the clutch pedal been working?

[varg]

Very fast. What's the size of that intercooler core?

[SLEEPYDUB]

OK small update.
Car made 411whp on 10psi, 595whp on 19psi, 755whp on 29psi, and 772whp on 31psi.

Ran a 60-130 on 19psi in 5.87s
Ran a 60-130 in 28psi in 4.62s

Currently swapping out may exhaust manifold from the log style to a PHR S23 manifold and going to 4" downpipe back exhaust. We're going to try to squeeze out a few more psi and go for 800-850whp.

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[SLEEPYDUB]

30psi on a stock bottom end is outrageous to me, hopefully you get those traction issues sorted soon. Glad to see this back on the road!

p.s. This is Zach with the beat up black E30 w/M20 turbo you tuned a while back, head is built now and the engine is still going strong!

Zach what's up man! Glad to hear it's doing well! I've got my built 2.9L stroker for sale if you want to throw some big power at it!

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[zwill23]

30psi on a stock bottom end is outrageous to me, hopefully you get those traction issues sorted soon. Glad to see this back on the road!

p.s. This is Zach with the beat up black E30 w/M20 turbo you tuned a while back, head is built now and the engine is still going strong!

[SLEEPYDUB]

Couple updates.

Traction is an issue, but have some 60-130 times for it.

10psi on 93 went 9.40
20psi on 93 went 6.65

I am now on E85 and haven't had a chance to run any times yet, but im tuned up to 30psi and its mental.
Should have some times soon

[SLEEPYDUB]

I recently put a draggy on it.

On this pass I was only running 1psi of boost.
93 octane, no VVTi enabled yet, street tires, full weight, left off the brake.
13.50 @ 107.64mph and let off just before the end.



Next run was on 9-10psi, just swapped in a 9psi wastegate spring and it made between 9-10psi during the pulls.
93 octane, VVTi enabled, spinning all of 1st and 2nd hard, street tires, full weight left off the brake, and you can see very clearly at the end of the run where i let off again misjudging the 1/4 mile.
11.74 @ 121.51mph



Here is the YouTube video on the 1psi pass. I didn't record the 10psi run yet. I'm going to put my drag pack on it soon and see if I can accomplish two goals. First being that I want to go 10s on 93 octane, I think it will only take 13psi to do that. Next goal will be to go 10s on 10psi and E85. That will be a little harder, but with the drag pack and the extra power from Ethanol, I may stand a chance. We will see. After that, it's 9s on 4lug 😜.

Part 16 - 1/4 Mile Test on 1psi of BOOST

https://youtu.be/g6fIS7ieRq0

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[SLEEPYDUB]

Updates via YouTube

Part 12

https://youtu.be/OVDMfBaU5CA

Part 13

https://youtu.be/T96DJvCf9vg

Part 14

https://youtu.be/7c7PangWt0U

Part 15
https://youtu.be/cz1Lx15bMZQ

[SLEEPYDUB]

I have those same CATuned axles, but no motor in yet to test if they are any good. Crazy that you had stock axes going10.9! That gives me hope. What's the secret to keeping them alive, just don't do anything stupid? All new suspension/bushings?

I just didnt launch it hard and backed halfed the rest of the track. 60ft was only a 1.9 so nothing crazy.

So you're slipping the clutch packs every time you use the pedal?

I'd be concerned with long-term reliability, seems like a clutch pack will be a lot less tolerant to clutch kicks, launching, general abuse compared to a traditional flywheel and clutch setup. Harder to service as well.

Only very briefly, just like a regular clutch. This is only really for clutch kick scenarios. The clutches dont wear the same as a traditional clutch pack, and it uses fluid pressure to apply the clutches, not a pressure plate, so it has a super high clamping force. Also, changing clutches in a DCT is not hard. Just remove the basket and replace them. Pretty simple actually.

Are you planning on 245/45 up front or just the rears? Are you currently running spacers with the ESR 16x9 wheels?

Front for the street will keep a 205/45/16. I do have a new drag pack for the car for the drag strip using a 23x5x15 Hoosier skinny and a 24.5x8x15 ET Drag for the rear.

I mean I don't know how it will resist abuse compared to normal clutch and flywheel. I dunno what materials they're using.

My mind goes to wet clutch packs like in differentials.
I also saw a video about some drag racers using wet clutch packs inside automatic transmissions so that you get that locked on acceleration like a manual, but the smooth shifts of an automatic.
It was on High Performance Academy's channel.

But you can bet that servicing that thing will be a pain for sure.

Servicing the trans is actually quite easy. Doesn't take much time to pull it, i think we've got it down to 45 minutes now.
Once out, its just a few bolts and a large snap ring to get the front cover off, and pull the clutch baskets.
Once clutch basket is out, its just like stacking leggo blocks. Nothing to it.

[hozzziii]

So you're slipping the clutch packs every time you use the pedal?

I'd be concerned with long-term reliability, seems like a clutch pack will be a lot less tolerant to clutch kicks, launching, general abuse compared to a traditional flywheel and clutch setup. Harder to service as well.

I mean I don't know how it will resist abuse compared to normal clutch and flywheel. I dunno what materials they're using.

My mind goes to wet clutch packs like in differentials.
I also saw a video about some drag racers using wet clutch packs inside automatic transmissions so that you get that locked on acceleration like a manual, but the smooth shifts of an automatic.
It was on High Performance Academy's channel.

But you can bet that servicing that thing will be a pain for sure.

[Drewdat]

ESR 16x9 Mesh Wheels (Soon to be 16x9.5 -20et Work VSKF)
225/45/16 R888R (probably going to 245 soon)

Are you planning on 245/45 up front or just the rears? Are you currently running spacers with the ESR 16x9 wheels?

[Panici]

So as you push the shifter the first of the two clutch packs engages but it waits for you to drop the clutch pedal to release the second clutch pack and then you're in gear and driving!

So you're slipping the clutch packs every time you use the pedal?

I'd be concerned with long-term reliability, seems like a clutch pack will be a lot less tolerant to clutch kicks, launching, general abuse compared to a traditional flywheel and clutch setup. Harder to service as well.