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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: andyd] #5187033 08/14/19 02:02 PM
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BMWTurboDzl Offline
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Originally Posted by andyd
School me please. What, pray tell, is the rationale behind a rear timing chain/belt? In the factory, the cabins are dropped onto the drive train The right way to take out an engine is on the sub-frame from underneath and then split off the engine or trans to service. KA- Ching!! and difficult to bodge behind the shop. The main reason I don't have a late model Ranger 4x4 is a rear cam drive 4.0L Take a good reliable little gas hog capable of 300K with little service and turn it into a grenade at 150K miles . A century of development going into push rod V engines. Then these OHC horror shows. What is the impetus to do this for Ford or BMW or any car maker? coffee


BMW went to a modular manufacturing process for their engine blocks in order to reduce costs. Part of this process included the standardization of the location of the timing gear to the rear. B-series engines include Inline 6,4, and I think 3 cylinders. In addition these blocks are all closed deck which enables them to be used for diesel-powered variants. BMW has a history of timing chain issues and IIRC the guinea pig for this layout was the 4-cylinder diesel N47. Some N26-N20 also have timing chain issues (extended 7/70 warranty for affected models).

In the past BMW had unique blocks for the various engine types (gas/diesel, I4,I6).


Last edited by BMWTurboDzl; 08/14/19 02:12 PM.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: E365] #5187185 08/14/19 05:41 PM
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DGXR Offline
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Looks like a solid performance engine but I don't like the rear cam chain and I don't like tearing apart a brand new engine. Still enjoyed the video laugh


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: E365] #5187217 08/14/19 06:14 PM
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bdcardinal Offline
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He has a bunch of really good videos on his channel. I remember back when people were first starting to race Hondas he was the front runner in the import drag racing scene.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: E365] #5187219 08/14/19 06:16 PM
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PimTac Offline
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Interesting to say the least.

So what happens to the Supra now? These guys will slap the engine back together, reinstall and get it on the market at a discount? Sounds like a upcoming thread here on BITOG.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: atikovi] #5187452 08/14/19 11:09 PM
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edyvw Offline
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Originally Posted by atikovi
Originally Posted by edyvw
I am not big fan of chain in the back. So far it proved stout in since 2016.


That's probably what they said of Audi's S4.

That is reason why I do not like it. But, it seems that this is far less problematic (if at all). Also, on some BMW forums I read that engine actually does not have to come out using tools specific for this generation of engines. How? Have no idea.
Also, BMW brought back regular water pump. But they just could not help themselves and had to put ECU run thermostat.
Also, looking at video I noticed oil filter housing to be completely new design. Gasket on those was an issue forever on BMW's. Cheap to do it, but annoying.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: PimTac] #5187469 08/14/19 11:46 PM
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bdcardinal Offline
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Originally Posted by PimTac
Interesting to say the least.

So what happens to the Supra now? These guys will slap the engine back together, reinstall and get it on the market at a discount? Sounds like a upcoming thread here on BITOG.




I think it will be going into one of their racecars.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: E365] #5187475 08/14/19 11:51 PM
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ZeeOSix Offline
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What's the HP rating on that stock motor?

Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: ZeeOSix] #5187477 08/14/19 11:54 PM
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02SE Offline
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They're claiming 335 hp.

Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: ZeeOSix] #5187508 08/15/19 01:17 AM
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edyvw Offline
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Originally Posted by ZeeOSix
What's the HP rating on that stock motor?

335, but as it is always the case with BMW, numbers on wheels are much higher than they should be considering hp on crank. BMW has really efficient hp transfer to the wheels (that is argued). So either they undervalue hp on crank or drivetrain is really efficient.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: E365] #5187519 08/15/19 01:42 AM
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ZeeOSix Offline
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335 HP stock and they want to get 1000 HP out of it. eek The main bearing design (with the windage tray adding support) looks kind of wimpy to support that level of power and remain reliable. Should be interesting to see how they do it.

Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: ZeeOSix] #5187523 08/15/19 01:52 AM
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It all depends on what the parameters of 'reliable' are. There have been turbocharged Hayabusa engines developing 1200 hp.

Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: ZeeOSix] #5187527 08/15/19 01:59 AM
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edyvw Offline
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Originally Posted by ZeeOSix
335 HP stock and they want to get 1000 HP out of it. eek The main bearing design (with the windage tray adding support) looks kind of wimpy to support that level of power and remain reliable. Should be interesting to see how they do it.

People get 900hp out of BMW N54 regularly and for the power, they work pretty well.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: ZeeOSix] #5187570 08/15/19 06:24 AM
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BMWTurboDzl Offline
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Originally Posted by ZeeOSix
335 HP stock and they want to get 1000 HP out of it. eek The main bearing design (with the windage tray adding support) looks kind of wimpy to support that level of power and remain reliable. Should be interesting to see how they do it.


The version used in the M340i makes over 380 HP. This SUPRA version was purposely de-tuned (My N55 makes 335 hp). What I wonder is whether or not the coating on the cylinder walls can take the added load. This engine is NOT sleeved.


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: E365] #5188248 08/15/19 08:01 PM
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So much ignorance and fear of anything new. My n54 has 210,000 miles on it, original chains and turbos, and I'd be totally fine if the chains were on the back. I've had BMWs for 20 years, and had only one chain tensioner go weak on my 318is from 1991. The rest have been perfect for 250k+. I just drove to Detroit and back and loved the performance and relative efficiency, even running 5-40 Delo.

This engine looks like a simplified version of my n54 in some respects. The lack of driver engagement of modern BMWs is worthy of a lot of criticism, but not the engines.


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Re: BMW (Toyota Supra) B58 Engine Teardown Video [Re: antonmnster] #5188264 08/15/19 08:13 PM
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Skippy722 Offline
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Originally Posted by antonmnster
So much ignorance and fear of anything new. My n54 has 210,000 miles on it, original chains and turbos, and I'd be totally fine if the chains were on the back. I've had BMWs for 20 years, and had only one chain tensioner go weak on my 318is from 1991. The rest have been perfect for 250k+. I just drove to Detroit and back and loved the performance and relative efficiency, even running 5-40 Delo.

This engine looks like a simplified version of my n54 in some respects. The lack of driver engagement of modern BMWs is worthy of a lot of criticism, but not the engines.


Anything other than penalty boxes... I mean econoboxes... I mean boring appliances... er, frugal, reliable vehicles are automatically disregarded for being too expensive or referred to as “unreliable” with absolutely no real world experience. It is IMPOSSIBLE to drive a BMW 200k with no issues! wink


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