Forced Induction & 7AT 370z Info

SG4247

I wouldn’t pay that for something that looks like it was built at a high school welding class.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

Tractionless

Just modify your own, it's simple.

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Toys Not Tots

Tractionless

You're install is looking good. I did mine on jack stands with the engine in and deleted so many silly brackets holding wires and connectors as they're nearly impossible to reinstall, especially the one at the top of the trans bell housing.

I simply zip tied my O2 wires to others on the sides of the trans. Nissan is guilty of bracket pollution on the transmission!

Curious as to why you shortened the shaft by 3/4" what it calls for 1/2" everywhere.

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Toys Not Tots

SG4247

On the driveshaft length…

I measured the original driveshaft and just shortening it by 1/2” would be a really tight install on my car. The drive flange was very close to the pinion shaft threads.

Then, after measuring the two transmissions side by side several times it looked like 3/4” shorter would be a little better choice for my 2010 model touring.

I have a 2016 3.69 mt rear diff, with a different than stock pinion angle also. That may be part of it.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

SG4247

Just an update on this transmission swap. Pretty happy with it overall, but it has some quirks that are frustrating, much like the VQ version.

The biggest one is:
I occasionally get a rough 4-3 down shift when stopping hard in D.

So, I will be researching this issue and report my progress.

Odds are good it’s a VB shift valve or solenoid issue, but not sure yet.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

DarkJak

Godzilla raceworks has the brace and aluminum driveshaft cheaper.

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Tractionless

Godzilla sent me an unbalanced shaft then ignored my evidenced filled email when requesting a measly $75 refund for the rebalance labor which fixed the vibration issues. Of course this request did not include 6 hours of my time to index their shaft in the 4 available positions on the flange, test drives, and round trips to the closest driveshaft shop to me.

They laid blame on everything and anything but their product which wound up being the problem as noted above.

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Toys Not Tots

Tractionless

I swapped over the entire VR valve body with solenoids and employed the Z's TCM. My 3-4 shift is still harsh (had this problem with the OE Z trans) and now so is the 4-5. I'm leaning toward needing a new Z TCM as stated above the valves were swapped from the VR.

All downshifts are much tighter and no more driveline "slop" that felt like a blown mount or bushings.

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Toys Not Tots

SG4247

That would have to be either your original Z TCM or the tune (either factory or aftermarket tune) on the ECM.

So a re flash at the dealer or your tuner should fix it.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

Tractionless

From what I've read only the line pressure can be controlled by a Tuner via manipulating the torque the ECM sees. Nothing's changed there and the trans behaves the same 3-4 but I picked up a 4-5 issue as well.

The TCM has been updated via TSB at Nissan so they say there's nothing else they can do. At this point I'm thinking failing TCM.

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Toys Not Tots

SG4247

Hmm okay so two questions.

Do you have to buy a “service TCM” 2010 compatible from Nissan and have it flashed with the latest software revision, or will a used TCM from a salvage 2010 trans part number be able to be reflashed at the dealer?

I am surprised they were willing to update a VQ TCM in a VR transmission. My dealer said it’s all modified now, and didn’t act like they wanted to update my TCU which is still on the original 2010 flash program. Guess I could call another dealer.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

Tractionless

The update was done prior to the VR install; however, how would they know I have a VR trans. anyway if I don't tell them? I HIGHLY doubt they're going to poke around under the car to determine whether or not the trans. is OE when they are getting paid to perform and update or marriage to ECU. None of the electronics change in the swap just "dumb" hard parts so in that regard it's not modified.

Don't tell any dealer you swapped trans.' and just have them update.

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Toys Not Tots

Tractionless

Removed the crap Godzilla Racing driveshaft for VR60 trans. swap as it threw the weight the local driveshaft shop had to swap in due to receiving it from Godzilla out of balance and with much vibration.

Only a few thousand street miles on it and a U-joint was already shot! Shop installed new non-serviceable joints and it balanced within spec. without needing additional weight.

None too happy about the serviceable joints slinging grease all over the undercarriage.

Contacted Godzilla the 2nd time about the balance issue (they ignored me the first) and told me because I altered it (1st go when replacing the balance weight), I'm out of warranty. I hardly consider that altering, it's the same as replacing wheel weights IMO. They've had every excuse in the book including adjusting non adjustable (per FSM) driveline angle.

Even if I were in warranty, the process is to ship it back to them, which would cost more roundtrip than if they simply reimbursed me for the original balance of $75 which I provided an invoice and before and after balance weight pics. Not to mention downtime. No wonder so many small businesses crumble!!

Also, they did mention other customers are having the same issues.

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Toys Not Tots