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      08-13-2019, 10:33 AM   #1
Ifellapart
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B58 teardown video ~ any idea how close this is to the b58 found in the 2016-2019 340

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      08-13-2019, 11:17 AM   #2
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I know the integrated exhaust header (turbo feeder) is new for the Supra version of the B58 (B58B30M1). It is water-cooled and supposed to improve efficiency and warm-up times (hopefully we won't see people fitting in "performance" thermostats to watch their temp needle sit lower).

The F30 340i has a conventional header not water-cooled. Other than that, I'm not sure there really are many differences. The Supra B58 has a forged crank though I think all B58s have that. All B58s have very good potential for tuning, IMO. Some are saying the integrated exhaust manifold might hinder tuning, but I'm not so sure. It should theoretically be easier/cheaper to install a larger turbocharger. BMW already has quite a few versions of the B58, even with the same rated power outputs.
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      08-13-2019, 01:39 PM   #3
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Originally Posted by upsidedownfunnel View Post
I know the integrated exhaust header (turbo feeder) is new for the Supra version of the B58 (B58B30M1). It is water-cooled and supposed to improve efficiency and warm-up times (hopefully we won't see people fitting in "performance" thermostats to watch their temp needle sit lower).

The F30 340i has a conventional header not water-cooled. Other than that, I'm not sure there really are many differences. The Supra B58 has a forged crank though I think all B58s have that. All B58s have very good potential for tuning, IMO. Some are saying the integrated exhaust manifold might hinder tuning, but I'm not so sure. It should theoretically be easier/cheaper to install a larger turbocharger. BMW already has quite a few versions of the B58, even with the same rated power outputs.

That's some interesting stuff! A water cooled exhaust header?? That seems not very beneficial
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      08-13-2019, 02:15 PM   #4
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Quote:
Originally Posted by Ifellapart View Post
That's some interesting stuff! A water cooled exhaust header?? That seems not very beneficial
Makes a lot of sense to speed the warm up phase from wasted heat. Getting oil and coolant to temperature as fast as possible, helps both efficiency (less frictional losses) and emissions. With the latest heat management, using heat from the exhaust is another tool towards more efficient control.
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      08-13-2019, 02:45 PM   #5
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I know alot of people myself included were like "This is not a real Supra" its just a BMW and obviously im here because Im a big BMW fan. I feel this is only gonna bring out more tuners for BMW's, More Parts and better options for us as BMW Fans.. If anything the Toyota guys are the ones ticked off, Steph Papadakis is a legendary & phenominal engineer / racer / engine builder.
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      08-13-2019, 02:58 PM   #6
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Does the Supra version have valvetronic? I know BMWs have a traditional throttle body but I thought it was at WOT in normal driving conditions is that the case here since he talked about throttle by wire being faster than your foot suggesting the throttle body opens and closes like a normal drive by wire system. I want to see if he can make the worlds first 1000 HP B58. Doesn't seem impossible since I believe there are M55 and S55 or maybe B58 upwards of 700 HP. The S58 is already north of 500 HP stock.
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      08-13-2019, 04:01 PM   #7
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Originally Posted by HighlandPete View Post
Makes a lot of sense to speed the warm up phase from wasted heat. Getting oil and coolant to temperature as fast as possible, helps both efficiency (less frictional losses) and emissions. With the latest heat management, using heat from the exhaust is another tool towards more efficient control.
Ah I didn't even think about it that way! I was thinking it would cool the exhaust and as far as I know, you want your exhaust to stay fairly hot for better flow (and emissions or whatever ) i believe this system is a part of the bmw version as well? I remember reading about a heat management module with the b58 would that be it?
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      08-13-2019, 08:22 PM   #8
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Great video! It doesn’t look like there’s a tappet between the cam lobe and the fuel pump. It also doesn’t look like a roller system. I’m already getting cam follower flash backs from my 2.0t FSI Passat! The design on the rod bearing caps is really cool how they’re “broken” so they get an exact fit. Really looking forward to the rest of his series on building the B58.
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      08-14-2019, 12:23 AM   #9
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Quote:
Originally Posted by bimmer456 View Post
Does the Supra version have valvetronic? I know BMWs have a traditional throttle body but I thought it was at WOT in normal driving conditions is that the case here since he talked about throttle by wire being faster than your foot suggesting the throttle body opens and closes like a normal drive by wire system. I want to see if he can make the worlds first 1000 HP B58. Doesn't seem impossible since I believe there are M55 and S55 or maybe B58 upwards of 700 HP. The S58 is already north of 500 HP stock.
Um... Its the same B58 thats in every BMW, Nothing different..
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      08-14-2019, 04:01 AM   #10
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Quote:
Originally Posted by bimmer456 View Post
Does the Supra version have valvetronic? I know BMWs have a traditional throttle body but I thought it was at WOT in normal driving conditions is that the case here since he talked about throttle by wire being faster than your foot suggesting the throttle body opens and closes like a normal drive by wire system.
It's not used as a traditional throttle body. It's similar to the diesels which have a throttle, but don't need a throttle plate for normal running. Part of the control and protection system. I understand such functions as smoothing out switch off, can prevent overrevving, fall back emergency running.
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      08-14-2019, 07:30 AM   #11
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Quote:
Originally Posted by QUiKSR20 View Post
Quote:
Originally Posted by bimmer456 View Post
Does the Supra version have valvetronic? I know BMWs have a traditional throttle body but I thought it was at WOT in normal driving conditions is that the case here since he talked about throttle by wire being faster than your foot suggesting the throttle body opens and closes like a normal drive by wire system. I want to see if he can make the worlds first 1000 HP B58. Doesn't seem impossible since I believe there are M55 and S55 or maybe B58 upwards of 700 HP. The S58 is already north of 500 HP stock.
Um... Its the same B58 thats in every BMW, Nothing different..
He was saying this engine is so new they had to pull it from a brand new Supra even though it's been around since 2016. And you can pretty much order it as a crate motor from BMW to put in your hot rod. Virtually every part is sold online. He did eventually acknowledge the partnership between Toyota and BMW and how he believed the engine could handle 1000 HP. Not to mention plenty of donor 340is that could be had for way less than a new Supra and pull that engine to take apart. Maybe he is doing this for views but he could say it's a Supra engine for clickbait then say we are using a BMW donor car with the same engine. He didn't know the timing chain was on the back or pretended not to know and was stripping the engine completely blind but knew there was no gasket for the oil pan. Though it was weird he had to modify his spark plug wrench as there are tools readily available for changing spark plugs on a B58 might as well get the right tools if you plan on modding. Granted there are several variants of the B58 but they are for the most part the same with some minor changes not enough to warrant calling it a brand new engine for purposes of a tear down video. You could just highlight the differences as part of the teardown.
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      08-14-2019, 11:48 AM   #12
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Quote:
Originally Posted by QUiKSR20 View Post
Um... Its the same B58 thats in every BMW, Nothing different..
There are some distinctions here. Like the integrated exhaust manifold. The F30 version of the B58 is the B58B30M0 and the M1 is only used on the latest BMWs. The M1 is only used on the very newest refreshed BMWs. No F body cars, and even not on some older G body cars.

There's no way to know if Toyota made any modifications though until they actually remove and strip the motor down. Also, Papadakis is a legend in import tuning and 2JZ tuning. It'll be very interesting to see what he does with this motor.
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      08-15-2019, 09:30 AM   #13
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Can a B58 crate motor really be purchased from BMW directly? Would love to swap one into the F31, but knowing the cost of a new motor and all the fixings needed would snap me out of my dream.
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