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SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
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11-20-2022, 08:50 PM | #155 |
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Some images of the diff cooler. Exits out of some holes behind the original license plate area.
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Andre - 2J into a Z4 Coupe!
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03-18-2023, 09:41 PM | #156 | |
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Quote:
You did that like my wife does cooking... "It says 30 minutes at 225F, so I'll just do 15 at 450F" I go through more pans than ratchets
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'06 3.0Si
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04-10-2024, 04:28 PM | #158 |
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Just a quick recap on the GS6-37BZ transmission and how it's holding up, as well as the Z4 non-M 3.64 Diff (with a Quaife).
I have no idea how much longer these two will last, but: - I'm on my 2nd transmission. 1st one lasted ~155 20 minute HPDE sessions before it blew. I am pointing the finger at heat. I've since installed two oil coolers and a pump, keeping it below 230F. Latest transmission is at ~70 20 minute sessions and going. - I'm on my 4th? diff, this latest one is on ~49 20 minute sessions. Again, added larger oil cooler and pump. I'm not sure if the cooler fluid will extend the life of these any further, but I'm at 630+whp for all of these events. I do not launch the car. I think it's safe to say these two can handle 630whp with quite a bit of abuse. I went into this thinking the transmission would be a box of marbles but it's somehow holding the power. Perhaps don't spread this secret because I need spares to exist The diff is smaller than the Z4M, and I may upgrade the entire rear end at some point. I'm itching to bump this to 700whp soon because why not. I do wish there was someone else with evidence of power limit on this transmission. Doesn't seem to be much data out there...
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04-12-2024, 12:20 PM | #159 |
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Great data, thanks for sharing it.
I imagine that most of the race prepped cars are built for a particular class and don't have the kind of power you do. |
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