any thoughts on swapping a B58B30M0

[bmwfan52]

there's a 2017 740i with the b58 engine at auction.
Is it ridiculously complicated electronics wise is the work worth the 322hp?
my max bid would be 1200.
The car is smashed, I am not sure about the engine I am thinking there is plenty of space between the radiator support and the engine since its a 6 cylinder.
Is it worth swapping into an e30? I know the 2019s are the performance versions of this engine, would i regret not waiting around for a 2019 engine to come around?

[McGyver]

That sounds like a very very very complicated swap if you're trying to run it off of the factory systems. I don't know what the point would be to swab a b58 and use a standalone when going to an m54b30 turbo with standalone should be a little easier.

Does the 740 come with a manual? if not, are you trying to use an auto, or buy a manual?

for reference, here's some info about an n52 swap:

https://www.r3vlimited.com/board/forum/e30-technical-forums/24v-engine-swaps/385417-n52-swap-discussion

[bmwfan52]

we both know 740 doesn't come manual but I think the supra does.
That said the trans for a new supra is easily in the 3-4k range, twice as much as the 740i
I figured it would be similar to the n52 just newer.
I appreciate the link.
how many hp do you think you can gain just by moding the b58 dme
swap my be worth attempting if you hitting close to 500hp.

[McGyver]

how many hp do you think you can gain just by moding the b58 dme
swap my be worth attempting if you hitting close to 500hp.

Modding the b58 dme?!? Why would you mod a b58 when other options exist and are proven to hold well over 500hp?

[bmwfan52]

it might sound outlandish now but, I think its the wave of the future.
As these 7 and 6series 6cylinder behemoths get older and/or cheaper (only takes a 7 series 5 years to depreciate tens of thousands of dollars) the engines will be common and cheap aswell. maybe even cheaper than the n52.
I feel like you are suggesting that the n52 dme programming has been mastered already and it's the easier route which I agree with.
I'll email kassel and ask if its even possible to flash the b58s dme. I will let you know what they say.

[ZEKTI]

You will need a stand-alone (4-5K min) or possibly the entire chassis harness from the 7 series or applicable. These motors use body modules to run. There is no EWS delete like an M52. If you want to run previous gen n54 there is a harness made in Portugal on eBay, that will run the engine but it won’t run all the diag parts. It’s basically the cheapest way to get the motor to run. Outside of the motor yes you’d need to figure out trans and if you will need a DS made, etc. all the shifter linkage will be custom. Sent from my iPhone using Tapatalk Pro

[ZEKTI]

You will need a stand-alone (4-5K min) or possibly the entire chassis harness from the 7 series or applicable. These motors use body modules to run. There is no EWS delete like an M52. If you want to run previous gen n54 there is a harness made in Portugal on eBay, that will run the engine but it won’t run all the diag parts. It’s basically the cheapest way to get the motor to run. Outside of the motor yes you’d need to figure out trans and if you will need a DS made, etc. all the shifter linkage will be custom.

[moatilliatta]

An idea that has crossed my mind was to de turbo, Headers, Higher comp pistons, Trumped off the intake ports... Probably heavy port work. NA with live on!

[bmwfan52]

An idea that has crossed my mind was to de turbo, Headers, Higher comp pistons, Trumped off the intake ports... Probably heavy port work. NA with live on!

wouldnt that be similar to an s50 engine

[moatilliatta]

Both would be an inline 6...

But other than dual vanos, Direct injection, Valvetronic, alumium block, can bus... I would say vastly different.

[ZEKTI]

Peak would be something like a TVR speed 6. Glorious NA I6. If stayed BMW that’s what the s54 is for. OP - what you want to do is almost impossible currently. Unless you have a multitude of skill sets or a very deep pocket book Sent from my iPhone using Tapatalk Pro

[bmwfan52]

it might sound outlandish now but, I think its the wave of the future.
As these 7 and 6series 6cylinder behemoths get older and/or cheaper (only takes a 7 series 5 years to depreciate tens of thousands of dollars) the engines will be common and cheap aswell. maybe even cheaper than the n52.
I feel like you are suggesting that the n52 dme programming has been mastered already and it's the easier route which I agree with.
I'll email kassel and ask if its even possible to flash the b58s dme. I will let you know what they say.

I thought i had posted the response from kassel?
They said they could do it no problem, but who knows what the details are.

[ZEKTI]

They could do what no problem? Flash the DME to simulate certain modules so the engine can run? What about the harness? How are you going to integrate that into an e30 chassis? This is a massive undertaking. And without either deep pockets or a large skill set from yourself, it won’t happen. You should look at previous Gen n54 swaps to get an idea. This isn’t a simple turn key swap. This is one of the only products that would make it “easier” to swap previous Gen n54 into an e30. https://www.ebay.com/itm/BMW-Swap-Co...-127632-2357-0 Sent from my iPhone using Tapatalk Pro