RJM isn't the only one doing transmission.

IPT https://www.importperformancetrans.com/ also do rebuild. I had Level 10 transmission and I blew it 3 times. Did my research and found IPT and he rebuild my trans. I've been beating on it whole summer since July and one full track day and still holding up well. Level 10 couldn't last a month with me. Even on 2nd week, I was having some flaring between shifting, mainly 2nd to 3rd and 3rd to 4th.

*Just a kind reminder* As a user, I'd highly suggest doing extensive research before going this route (think carefully for the so-called 7AT performance rebuilds of our Zs). PM me if you want to know my story.

I see your siggy says you ran 584whp. How much tq were you making? I've put over 4k miles on my stock 7at without issue @ 450whp/450wtq. If you stay at or below 450wtq and make sure you don't forget to downshift to 4 before giving it beans on the highway, you should be fine. Staying out of peak tq range in gears 5-7 is important. My single turbo makes peak tq around 4k rpm, so as long as I remember to downshift to 4 on the highway before a pull, I'm consistently ahead of my tq curve redline shifting into 5th gear. It's deciding to gun it from cruising speed/rpm in 5th 6th or 7th that leads to slipping.

451wtq at about 5500rpm. Have broken three transmissions so far (one is a performance rebuild). I drive my Z in AT mode for most of the time. I'm currently testing another one of performance rebuild. Both performance rebuilds are from reputed shops in the United States.

I stay in manual mode so I can control where the rpms are at, and what gear I'm in at all times. The 7at in auto mode gear hunts way too much for 450wtq

And I have trans oil cooler. I can understand the stock trans is incapable of holding up. What makes me feel solely disappointed are those so-called performance rebuilds. **Don't go/trust performance rebuilds anyway. You can go find the tread I posted recently about my user/customer experiences with IPT.

Looks like Jake's Performance has an adapter for the 4L80e

https://m.facebook.com/story.php?sto...d=281079083525

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My advice is to think it carefully for those performance rebuilds. For boosted big-power Z, the most reliable way is to have a manual Z imo if you don't have a preference for autotransmission.

But what is that?

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Embrace Google.

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Does anyone have or know anyone who has experience with a built transmission from Pure Transmission?

I only just recently heard about them, and curious to know how well they hold up with high hp/tq.

So far I know of:

1. Level 10 - stay away, lots of horror stories
2. IPT - hit and miss from what hear from customers
3. RJM - seems to have gone quiet on their trans or I haven't hear anything from their 7AT customers.
4. Fast Intentions - only build inhouse
5. Pure Drivetrain Solutions - only just heard about them

6. CJM/Specialty Z- bmw dct

Yes I know about this one too, been following it for a while.
But the setup, wiring etc sounds to be very compliacted.

I am unsure if I could trust anyone in Australia to perform such a setup, and it sounds like it is going to cost almost 2x a built 7AT setup.

Just found this blog post yesterday, and they were very responsive in getting back to me via email. They offer bellhousing modification, powder coating and they sell steel and Al driveshafts.

https://www.godzillaraceworks.com/te...ur-zg-platform

Definitely a good swap for less then $1000

It’s going to be more than that for me. I found a low mileage (37k) trans for $800 delivered, driveshaft $550, oil, then figure out what I want to do for drilling housing, and that’s if I do it myself.

Keep us updated please and/or make a DIY. :tiphat:

Here's some more info. with video but it wasn't into a Z. Seeing the Godzilla webpage is promising that the trans fits in the Z unibody with modification.

http://www.the370z.com/engine-drivet...sion-swap.html

Guess the price has gone up. The guy who first did the swap on the g37, cost him $500.

I'm looking into this swap with Godzilla. Does anyone know if the VR30 Red Sport 7AT is different than any other VR30TT 7AT? Are the internals the same? Chris at Godzilla thinks they are but couldn't positively confirm... My stock 7AT with Trans Cooler and Billet Flexplate is holding up for now but this upgrade will give me some good piece of mind...

May be going this route in lieu of the BMW DCT swap. I could sell that DCT and cover most if not all the costs of doing the Q50 7AT swap.

A part of me wants to just do the SC kit first and run it till the stock 7AT goes though, and maybe by then we get more info on the 9G Tronic in the new Z and if that might be retrofitted somehow (am not hopeful though, and certainly can't just swap controllers over.)

I have about 1000 miles on my supercharged 370Z with the stock 7AT and Billet Flexplate and trans cooler. No issues from stock trans yet but I am aware of the limitations and have not repeatedly beat on the car. I am pretty mindful of the trans temps....

Yeah, it seems to have. Mine has 37k miles and with delivery mine was easily 50% less than all others I saw advertised for the last few months. Speaking of, just got it dropped off!

Bought off Ebay? How much?

I’ve seen 2-3 posts/articles that all claim the Red Sport is the same. My only wonder now is if I need to do billet flex plate as well. I’ve heard the DOJ billet one doesn’t fit with the swap whereas the FI does.

Yup, $800 from eBay shipped from FL to MA.

I have the billet FI flex plate. I read the stock one will fail with high hp. I assume that would apply to any 7AT since that is connection of crankshaft to transmission.

Yeah, that pic looks identical to one on an eBay ad I had saved.

Flex Plate
 

I broke 2 stock flex plates. . i got the F1 flex plate, night and day difference in the plates.

Z

Looks like I may need a trans build soon.

My 7AT has started slipping. Going to try changing fluid and see if that helps.

Otherwise I will need to find a solution.

I don't know what to do. Should I get a Pure transmission, or Rjm, or IPT, or try the DCT conversion like SpecialtyZ is doing.

I am worried about the later one, because I don't know who in Australia would be capable of such a conversion.

CJM told me that it would take the most elite level auto electrician, possibly 80+ hours to do the wiring and setup for the DCT conversion on their own from scratch. Sounds a bit daunting. Not many options I have down here. Or just take a chance with a local performance trana builder.

Might really need to do something soon though.

VR30 trans swap

My VR30 Swap should be completed today. I'll post some pics once done. I ended up buying one off Ebay and a local shop is installing it. I need a lift in my garage for these type of things!!

Awesome! I have a shop doing the same in 2 weeks when my supercharger is installed. I pointed them to the videos and articles I found, but I'd be really interested in know if your shop ran into issues if they hadn't performed before.

Remind me again - are you upgrading so you can turn up your boost, or just want more long-term peace of mind?

Even though the VR30 trans is stronger than the stock Z 7sp AT, I hear they will still fail after 600whp/600tq.

So what about future proofing for people who want to make atleast 800whp, will the VR30 suffice or do we need something stronger?

SOHO claims to have a VR trans holding 572 ftlbs. For superchargers, you’d probably have near 700 whp with that amount of torque. That would be plenty for me, as you’d essentially have 3 unusable gears in WOT at that point :)

My stock vq37 7AT hasn’t failed yet but I figured I’d swap before it does.

Welp mine is in. Shop did it for me and said it wasn’t too bad. It’s a shame to hide that beautiful new Aluminum driveshaft…. Still tuning the Supercharger parts, though.

Have you logged your transmission temps? After cruising for a while on a 95 deg. day, then doing a 5.5k pull, I'm not seeing trans temps over 194 F. I don't have a trans cooler and am trying to gauge whether I might need one in the future. I'm thinking unless I do multi-lap HDPE, probably not necessary.

Any updates on DCT or VR installs and impressions? :tiphat:

This is a great thread. I’m pretty much at a crossroad with what I should do with my automatic as well. I’ve got a 2014 automatic touring Sport with all the fixings and top guns “original”air to air supercharger and I’ve been running reliably between 550 and 590 whp @14 to 15 psi for over a year . Currently I’m 570whp/ @14.4psi and 450ft-lbs torque

I attribute all of my healthy longevity to my incredible tuner, Harry @z-tuner in Bradenton and the fact that I don’t consistently abuse the car. I do drive it to work or daily drive it 3 days a week and my wife drives it occasionally around town. Car runs only on e85 which probably helps greatly.

Car has stock engine, stock transmission and the headers are stock, everything else is upgraded with all supporting coolers.

Having said all of this I assume it’s only a matter of time before the transmission fails and I would love more power for the occasional street race or track day.

I’ve been leaning more toward ipt transmission rebuild and then a new differential and 3.9 gears with new fly wheel. Would love to hear suggestions from anyone.

I have a 25 row cooler that bypasses the stock cooler and uses -6AN lines all the way back to the transmission. So far this summer I have not seen over 175 degrees in any situation while driving the car and it's hot in DFW Texas.