... But the car will not move , IMMO is activated I believe with an error.
21E921 electronic Immobilizer: non authentic response received.
what to do in order to get the ISN (I presume) in the EME changed to match the request from the BDC?

Or what do we need to do in order to remedy this?
thank ...

Do you have a picture of what the rear axle looks like currently?
I can't really see it in the picture of the back. May help think of different ideas. I was thinking 2 motors if it's split..

What about looking at truck e-axles? I'm not sure theres much of a market yet but i think this may be your best bet to having something strong and reliable. The LDUs are powerful but not what I'd consider to be reliable. You may be able to adapt their inverter or another inverter to the eaxle.

some can, others can't?

https://openinverter.org/forum/viewtopic.php?t=6047



This is a forum for EVs and stretches to people attempting to do hybrids. The knowledge base here is around EVs. It's a bit like going to a sewing forum to ask about plastic surgery.

Understood you found a controller ...

This is the wrong forum for things like this. Check out:
- the megasquirt transmission controller
- diy efi
- speeduino transmission controller

There are others too.

That's the thing, quite a lot. Not so much off-throttle but brake blending regen up to 40% of acceleration torque.


This is my second best guess as to what may have caused this. Any idea how much 40% regen deceleration is vs the ice engine braking? Seems like it would be maybe 2x or more.

Is 25 ...

I'd expect 5krpm would be ok.

How much regen do you run?

Synchros are very likely bronze, / brass, so a bronze / gold color. Some glitter is normal on a high mileage transmission.
Bearing bits are chrome / shiny / dark. Gears are too.

What rpm are you spinning the motor to normally? It's still my guess that the input rpms were run too high and one or ...

You may be able to find one of those plastic clutch disc alignment tools for the gs450h / 600 that has the splines in it and work backwards from what that fits to find clutch discs that could work.

I turned my own adapter from a Toyota 3B clutch disc (same splines) with intent to weld it to the bellhousing plate.
PXL_20251102_161919756.jpg



I actually plan on using eight M10 bolts to hold my star down, 4 in the stock OEM closer to center holes that are already there, and 4 on the ...

Here's the 3d scan of the LS600H. Not the best quality but may be good enough to work from.

https://drive.google.com/drive/folders/1YLqGP73LcCMjsH2AuqYJNAFjcGjirnsh?usp=drive_link


I downloaded the files, thanks for sharing them. Bellhousing looks pretty good, thats all i've opened so far ...

The subscribe to topic visual is opposite my expectations, checked means not watching, unchecked means watching.

Could potentially use a logic gate to be controlled by a few inputs and not have to worry about software as much or maybe at all.

Honestly getting the right rubber profile is the much harder problem as I want a few pieces to test but last time I looked it was quite pricey online and nowhere around me sells it.


Worth doing a 2 / multi piece bolt together 3D printed mold with uv stable mix and pour silicone and a pressure ...

That's a massive amount of weight to move compared to the donor vehicle, 4x without a load. I'd expect keeping the motor cool will be a big issue. It's a lot of long term stress on the drivetrain too. Just things to consider while planning.

It will be an excellent stress test for people using these ...

Just curious if you ever created an updated DXF? I was just about to send one of these off for mfg.


It's been a while since I looked at and worked on this. If I remember right I drew most of this up but there were some missing dimensions to finish it.

If there's interest in this and you can ...

A few steady throttle position step logs might also help see what's going on. Like 5, 10, 15, 25, 35, 50% etc. But hold each for 1/4 second or so.

And to uhi's point, are connections good? Bad crimps can be easy to miss.

Edited

Looks like maybe some capacitance difference between channels for some reason.

You also need a way to achieve a decent gear ratio. Getting the power to the wheels means some differential and possibly a secondary reduction to get closer to 8:1 (if that's ideal for your setup and goals.)

Greg, you have the pads on the floor, right?

Your garage floor isn't likely perfectly flat to be able to see / determine a high diagonal. Just total weights and front / rear balance for the balance questions.

And it's surprising how hard it is to actually get weight to shift around when you're ...

Is it possible there isn't enough plunge in the halfshafts and they're binding the differential bearings?
Seems like the differential bearings are shot. Likely something else caused their failure.
Can you drain the diff oil through a paint filter to see if metal chunks come out?

Is there a slack channel, Trello board, etc. that helps organize what's needed / what projects are being worked on and who is doing work / available to help?
If not, this is likely a good place to start.

Why not swap in a newer, high kwh leaf battery?

So is it an overvoltage event that triggers igbt failure which gives the overcurrent error?
Some of the newer Tesla induction motors look to have a gas discharge tube between 2 phases (a guess on my part). I'm wondering if they added this to help with inductive collapse energy / regen transitions ...

marcucci wrote: ↑Sat Oct 11, 2025 7:42 pm dala glosses over this in his github. Searching here and elsewhere on the web I get different results on whether or not it will be happy with nothing connected.

I think dala covers it quick in his YouTube video of the conversation.
I can't imagine it's happy without the sensor.