Stock FAQs

how much hp can a stock b58 handle

by Miss Antonette Hahn Published 3 years ago Updated 2 years ago
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B58 Engine Limits - Simple Answer. The BMW B58 engine can handle around 600-650whp and 550-600wtq on the stock block and internals.Oct 1, 2021

Full Answer

How much HP can a B58 motor run?

In summary, the B58 is good for about 550-600wtq which normally equates to about 600-700whp. The pistons, rods, and bearings are a few of the main limiting factors. We'll circle back to this topic once again after these coming sections.

What's wrong with the B58 rods?

As with most BMW engines, the B58 rods and rod bearings are one of the biggest limiting factors. At 550+wtq they're usually one of the first parts to let go. One bad engine knock can quickly bend the B58 rods or even send one out the block.

What is the turbocharger pressure on a BMW B58?

The B58 has a highly capable and reliable turbocharger. The maximum we've seen to stock turbo run is 23-24psi at the time of this writing. There appears to be a fuel cap that is preventing the turbo from being pushed further at this time.

What are the upper limits of the BMW B58 block?

In this article, we discuss the upper limits of the B58 block and internals. The BMW B58 engine can handle around 600-650whp and 550-600wtq on the stock block and internals. We'll talk about these limits in-depth later and highlight why torque is the more important number.

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How much HP does the B58 make?

BMW B58OutputPower output240–285 kW (322–382 hp)Torque output450–500 N⋅m (332–369 lb⋅ft)Dimensions27 more rows

How good is BMW B58 engine?

Its pulling power is immense, capable of making even heavy SUVs properly fast. But it's not just the power itself but its delivery. There's torque everywhere in the rev range and virtually no turbo lag. Stomp the go-pedal in any gear, at any rpm, and the B58 explodes, with a seemingly endless surge of power.

How much HP can the 2020 Supra handle?

The Supra's engine is only rated at 335 horsepower (although dyno testing has shown that figure is actually closer to 400 hp), but Papadakis found the engine to be far more stout than its factory rating would suggest.

How long do B58 engines last?

How long an engine will last is always a tough topic. There's no right answer, but in general the B58 should last as long as you're willing to continue repairs and standard maintenance. The internals and design are plenty strong to surpass 200,000 miles.

Is the B58 better than the N54?

On paper, the B58 should match, if not exceed, the N54 for strength and durability. Although, the single turbo will likely limit its capabilities without upgraded turbo(s).

How much power can a B58 handle reliably?

B58 Engine Limits - Simple Answer. The BMW B58 engine can handle around 600-650whp and 550-600wtq on the stock block and internals.

How much HP can a 2JZ block handle?

2,000 hpCapable of 2,000 hp. Tightly-packaged, inline configuration.

How much horsepower can you get out of the new Supra?

This engine can deliver up to 382 horsepower at 5,800 to 6,500 RPM and 368 lb-ft of torque at 1,800 to 5,000 RP,. When equipped with this engine, the Supra can reach a top speed of 155 mpg and accelerate from 0-60 mph in about 3.9 seconds.

How reliable is the B58 turbo?

The B58 has a highly capable and reliable turbocharger. The maximum we've seen to stock turbo run is 23-24psi at the time of this writing. There appears to be a fuel cap that is preventing the turbo from being pushed further at this time. The reliability threshold is going to be around 20-21psi, although you are likely still deteriorating your longevity a meaningful amount at these levels.

How much boost does a N55 have?

While the max boost on an N55 is in the 24-26psi range, the B58 seems to be capped due to fueling. Given the engine is a few years younger, there might be a few more psi to come in the future once the fueling piece gets figured out.

How long does a stock turbo last?

It's hard to say exactly how long the stock turbo will last at 20psi or more . The one thing that is certain is that the engine internals are certainly capable of holding these boost levels. We've heard reports from people running 20-21psi for 20,000+ miles without any issues, with one report from a forum member saying he has been running 20psi for 50,00 miles.

What happens if you run a turbo above 20 psi?

Running above the 20psi mark will create a flattened benefit curve, as turbo efficiency will decrease. Ultimately, you are pushing the turbo a lot harder for a smaller amount of performance gain.

What is the safest max boost?

20-21 psi is what we consider the safe max boost, but have heard of a few folks running 21-22psi reliably.

Does BMW B58 have turbo boost?

Max Boost on Stock Turbo BMW B58. While the phrase that something is “an art, not science” is used frequently, it does not hold true with turbo boost and tuning. Turbochargers, engine internals, and ancillarily engine support systems can only hold so much boost before they give in.

Is the turbo on a B58 a good thing?

From what we've been able to gather, it appears the turbocharger on the B58 is very strong. With that being said, there is obviously a significantly elevated risk of blowing a turbo at these boost levels. Just because one individual has made it 50k miles, doesn't mean yours won't die at 5,000 miles.

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