BMW N57 8hp to TD5 Auto adapter kit

**rick130** · 26th January 2025, 09:00 PM

Originally Posted by d2dave

An observation of this. He removes the seal from the transfer box and moves it to the adapter.

What is the point of doing this? And by doing this the transfer box will leak between it and the adapter as there was no sealing done on this join.

If the ring on the adapter fits neatly inside the t/case, (and it looks like it does) some Hylomar or better, Loctite 515 flange sealant would work well to seal the housings so no need for 2x seals

**DiscoDiscoMan** · 26th February 2025, 02:17 PM

Hi RRT, anymore progress… been a fascinating journey so far.

We are with you!!!!

**d2dave** · 21st March 2025, 10:58 PM

Been quite a while now since we have head any progress.

Has there been any?

**Slunnie** · 11th May 2025, 09:40 AM

It looks like industry are pushing forwards on this opportunity.

Seems like Will from House of Torque has asked Lawrance (and the machine) to push forward on the development of solutions for this conversion.

It sounds like the parts required for this conversion will be sold by House of Torque.

1st episode of the Td5/8HP conversion dropped today from Lawrance and the machine - this will be exciting stuff for those wanting a Td5 auto and proper HP!

**loanrangie** · 12th May 2025, 08:57 PM

Originally Posted by Slunnie

It looks like industry are pushing forwards on this opportunity.

Seems like Will from House of Torque has asked Lawrance (and the machine) to push forward on the development of solutions for this conversion.

It sounds like the parts required for this conversion will be sold by House of Torque.

1st episode of the Td5/8HP conversion dropped today from Lawrance and the machine - this will be exciting stuff for those wanting a Td5 auto and proper HP!

I was just about to post that video, watched it over dinner.

**d2dave** · 15th May 2025, 07:20 PM

Having watched that video, I have concerns about not having locating dowels on the adapter plate to engine.

He even mentions in the vid that you can't be sure that there is perfect alignment between adapter and crank.

**loanrangie** · 16th May 2025, 09:20 AM

Originally Posted by d2dave

Having watched that video, I have concerns about not having locating dowels on the adapter plate to engine.

He even mentions in the vid that you can't be sure that there is perfect alignment between adapter and crank.

You'd think with all the work it takes to make the adapters that it would be easy to add dowels.

**Slunnie** · 17th May 2025, 09:16 AM

It drives! Here is part 2 of the Td5/8HP conversion

and the extras on the gearbox mounts and the shifter mount.

**loanrangie** · 18th May 2025, 09:39 AM

I wonder how much it affects fuel economy ? The locking up in every gear has to help a lot with low speed running i would think.

**Slunnie** · 18th May 2025, 10:27 AM

Originally Posted by loanrangie

I wonder how much it affects fuel economy ? The locking up in every gear has to help a lot with low speed running i would think.

My guess is a lot. I think the 4HP is also a pretty inefficient transmission, made worse by the torque converter used with it when mated to the Td5. Where the 8HP I thought was always locked up except when shifting.

My question also was how much cost difference is there between installing an N57/8HP compared to a Td5/8HP.

Thread: BMW N57 8hp to TD5 Auto adapter kit

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