K or BP Engine to BMW E36/E46 Transmission Upgrade
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Sorry for the shameless plug, but this is super exciting, and it makes me miss my old e30. I had used the MZ3 shifter, it's taller but the pivot arm is a bit longer reducing throw. This is making me nostalgic for my s50 e30 days where I fashioned a plate with the UUC ERK:
GPS based speed adapter?
On one hand, that's incredibly cool and means that you should theoretically have more accurate speedometer readouts, but I do kinda worry about not having a direct mechanical or electrical input from the transmission. What happens when you go through tunnels? (about .00001 of my driving time). How fast does it respond to changes in speed? Much slower than a direct wired connection I am sure.
I hope they can find a way to give options on that.
On one hand, that's incredibly cool and means that you should theoretically have more accurate speedometer readouts, but I do kinda worry about not having a direct mechanical or electrical input from the transmission. What happens when you go through tunnels? (about .00001 of my driving time). How fast does it respond to changes in speed? Much slower than a direct wired connection I am sure.
I hope they can find a way to give options on that.
Stock Miata exhaust fit comfortably back on the car without issue, with both 5 and 6 speeds. There is actually quite a bit of clearance, and it definitely will fit a 3" K series exhaust. If anyone wants to ship me parts to test fit on this car and return, I'm happy to do so.
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Nothing worth cutting off the trans. I can get under the car and take some pictures with the stock header and exhaust though. I don't envision it being a big issue, the trans is really not that large. The only place clearance gets tight is on top of the tunnel.
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Stock Miata exhaust fit comfortably back on the car without issue, with both 5 and 6 speeds. There is actually quite a bit of clearance, and it definitely will fit a 3" K series exhaust. If anyone wants to ship me parts to test fit on this car and return, I'm happy to do so.
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Do you expect to offer individual components of the kit? Or all in one package. I assume it will be like the k swap, where you can buy individual components. If so, awesome
Yeah, we'll make separate parts available, shouldn't be an issue.
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We'll take some video. It's just not that exciting with the stock engine. But I've been doing non-stop burnouts and donuts with it so far. Oh, and commuting like a normal person too. I'm getting a couple track days on the calendar right now too.
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Yup, probably 2 or 3 of them actually. Come on by and we'll take you for a ride. If all goes according to plan, the white turbo car will be there to make cool noises.
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Yes, same idea. I actually have a Z4 3.0 shifter on my desk and I'm about to put it in the car. I think it's going to feel better than the M5 shifter in there right now.
We had the same thoughts. Dead nuts accurate and super simple to install. Plus you can change ratios, wheel size, or anything at all and it will be accurate. It's a really common thing in the hot rod community. The trade-off is possibly losing GPS signal. The module we're using has really good reviews. I should have it this week and we'll install and test drive. It seems like the gauge action is like stock. The other option is adding an ABS wheel speed sensor and developing a processor to send that signal to the ECU and cluster. We can do it, but the GPS setup will be cheaper and simpler, and won't require people to hunt for spare ABS knuckles, sensors, and rings.
Stock Miata exhaust fit comfortably back on the car without issue, with both 5 and 6 speeds. There is actually quite a bit of clearance, and it definitely will fit a 3" K series exhaust. If anyone wants to ship me parts to test fit on this car and return, I'm happy to do so.
We had the same thoughts. Dead nuts accurate and super simple to install. Plus you can change ratios, wheel size, or anything at all and it will be accurate. It's a really common thing in the hot rod community. The trade-off is possibly losing GPS signal. The module we're using has really good reviews. I should have it this week and we'll install and test drive. It seems like the gauge action is like stock. The other option is adding an ABS wheel speed sensor and developing a processor to send that signal to the ECU and cluster. We can do it, but the GPS setup will be cheaper and simpler, and won't require people to hunt for spare ABS knuckles, sensors, and rings.
Stock Miata exhaust fit comfortably back on the car without issue, with both 5 and 6 speeds. There is actually quite a bit of clearance, and it definitely will fit a 3" K series exhaust. If anyone wants to ship me parts to test fit on this car and return, I'm happy to do so.
Joined: Apr 2014
Posts: 18,643
Total Cats: 1,870
From: Beaverton, USA
Or install in the parking lot friday night
Yes it should. They are physically on the outside the same case. It's just the SMG pump and a few other things internally. If you do a little bit of searching, there are even instructions on how to convert the SMG transmission to a regular manual with some mods.
A customer of mine on a high power 1.6L (530hp/390tq) had the FD gearbox and installed an M3 E46 gearbox - 3" DP and exhaust, no clearances issues. Custom fabrication (not a Kmiata kit or anything) but it goes on to show that there should be no clearances issues with a 3" exhaust.
Yes, same idea. I actually have a Z4 3.0 shifter on my desk and I'm about to put it in the car. I think it's going to feel better than the M5 shifter in there right now.
We had the same thoughts. Dead nuts accurate and super simple to install. Plus you can change ratios, wheel size, or anything at all and it will be accurate. It's a really common thing in the hot rod community. The trade-off is possibly losing GPS signal. The module we're using has really good reviews. I should have it this week and we'll install and test drive. It seems like the gauge action is like stock. The other option is adding an ABS wheel speed sensor and developing a processor to send that signal to the ECU and cluster. We can do it, but the GPS setup will be cheaper and simpler, and won't require people to hunt for spare ABS knuckles, sensors, and rings.
Stock Miata exhaust fit comfortably back on the car without issue, with both 5 and 6 speeds. There is actually quite a bit of clearance, and it definitely will fit a 3" K series exhaust. If anyone wants to ship me parts to test fit on this car and return, I'm happy to do so.
We had the same thoughts. Dead nuts accurate and super simple to install. Plus you can change ratios, wheel size, or anything at all and it will be accurate. It's a really common thing in the hot rod community. The trade-off is possibly losing GPS signal. The module we're using has really good reviews. I should have it this week and we'll install and test drive. It seems like the gauge action is like stock. The other option is adding an ABS wheel speed sensor and developing a processor to send that signal to the ECU and cluster. We can do it, but the GPS setup will be cheaper and simpler, and won't require people to hunt for spare ABS knuckles, sensors, and rings.
Stock Miata exhaust fit comfortably back on the car without issue, with both 5 and 6 speeds. There is actually quite a bit of clearance, and it definitely will fit a 3" K series exhaust. If anyone wants to ship me parts to test fit on this car and return, I'm happy to do so.
Yes, Lars and I will see what we can come up with for some test fitting.
Good idea on the Xenocron speedo setup, I'll check it out.
Allen, sure we can talk anytime for parts for your NB, just let me know.
Good idea on the Xenocron speedo setup, I'll check it out.
Allen, sure we can talk anytime for parts for your NB, just let me know.
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Swapped in the Z4 shifter and I'm quite pleased. Size, shape, and throw is similar to stock. When you shift it, you can tell there is something a lot more stout down there.

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