How much power can the Boost Logic Connecting Rods for BMW B58 handle?

Manley rates Turbo Tuff rods at roughly 1,250 horsepower and up in six cylinder applications, and Boost Logic aims the Connecting Rods for BMW B58 at builds targeting 800 to 1,500 plus wheel horsepower. Boost Logic points to 2JZ engines making over 2,000 wheel horsepower on Turbo Tuff rods, but those figures come from a different engine, not the B58.

Should I upgrade to the ARP 625+ rod bolts?

The ARP 2000 bolts supplied as standard provide proven clamping force for high horsepower builds. Boost Logic offers the ARP 625+ upgrade for an extra $400 for extreme builds pushing the limits of cylinder pressure and rpm. Discuss the power target and rev limit with the engine builder before deciding, since the rest of the bottom end sets the real limit.

Are these rods worth it on a bolt-on B58?

No. Boost Logic states directly that this package is not for basic bolt-on cars or mild builds staying near stock limits. It is intended for big turbo B58 engines running high boost on ethanol or race fuel, where cylinder pressure and rpm load the factory rods well beyond what they were designed to handle.

What steel are the rods made from?

The rods are made from 4340 aircraft grade steel that is vacuum degassed for consistent material integrity. Each rod is shot peened to military specification to reduce surface stress and improve fatigue life, and every rod is individually Magnaflux inspected for structural integrity before it leaves production.

What else does a B58 build need alongside these rods?

Boost Logic lists the rods and their ARP bolts, not pistons, bearings or machine work. A build at the power levels these rods target also needs pistons, a fuel system and a turbocharger matched to the goal, plus a custom tune. Bulletproof Automotive can help match Boost Logic pistons and other parts to the plan.

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Description

Boost Logic Exclusive Manley Turbo Tuff Connecting Rods for BMW B58

Boost Logic’s Exclusive Manley Turbo Tuff Connecting Rods for BMW B58 are a rod package Boost Logic specifies for big-turbo B58 builds that run high boost, high rpm and high cylinder pressure. The rods are made from vacuum-degassed 4340 aircraft-grade steel, shot peened to military spec and individually Magnaflux inspected, and they come with ARP 2000 rod bolts as standard. Manley rates Turbo Tuff rods at roughly 1,250+ hp in six-cylinder applications; Boost Logic aims this set at 800 to 1,500+ whp targets and says plainly that it is not for bolt-on cars or mild builds near stock limits.

Construction

The Turbo Tuff design addresses the failure points of a boosted engine. A ribbed cap keeps the housing bore round under load for bearing life, large-radius cap corners and a shallow spotface improve crank-end fatigue strength at high rpm, and an undercut I-beam profile balances strength against mass. At the small end, a ribbed pin-end support holds pin bore geometry under cylinder pressure, and dual pin oiling at the 10 and 2 o’clock positions feeds the wrist pin during high rpm and endurance use.

Features

4340 aircraft-grade steel, vacuum degassed
Shot peened to military spec and individually Magnaflux inspected
Ribbed cap and ribbed pin-end support hold bore geometry under load
Undercut I-beam profile for strength without excess mass
Dual pin oiling at the 10 and 2 o’clock positions
ARP 2000 rod bolts standard, ARP 625+ available

Applications

BMW B58 Engine: 2nd Gen | 3.0L Turbo I6

Notes

The ARP 625+ rod bolt upgrade, for extreme cylinder pressure and rpm, is available through Bulletproof Automotive for $400
Boost Logic lists these rods for the second-generation B58; confirm your engine with Bulletproof Automotive before ordering
Boost Logic does not state the quantity in the package; the vendor photo shows six rods, one per cylinder of the B58
Pistons, wrist pins and rod bearings are not listed as included
The 1,250+ hp figure is Manley’s rating for Turbo Tuff rods in six-cylinder applications, and the 2,000+ whp examples Boost Logic cites are 2JZ builds, not B58 engines
The Connecting Rods for BMW B58 are an engine-build part and are fitted with the engine apart
Boost Logic also lists a Boost Logic Rod Set for A90 / A91 Toyota GR Supra (BL 03010702) and a Boost Logic Piston Set for A90 / A91 Toyota GR Supra (BL 03010701)

Frequently Asked Questions

How much power can the Boost Logic Connecting Rods for BMW B58 handle? Manley rates Turbo Tuff rods at roughly 1,250 horsepower and up in six cylinder applications, and Boost Logic aims the Connecting Rods for BMW B58 at builds targeting 800 to 1,500 plus wheel horsepower. Boost Logic points to 2JZ engines making over 2,000 wheel horsepower on Turbo Tuff rods, but those figures come from a different engine, not the B58.
Should I upgrade to the ARP 625+ rod bolts? The ARP 2000 bolts supplied as standard provide proven clamping force for high horsepower builds. Boost Logic offers the ARP 625+ upgrade for an extra $400 for extreme builds pushing the limits of cylinder pressure and rpm. Discuss the power target and rev limit with the engine builder before deciding, since the rest of the bottom end sets the real limit.
Are these rods worth it on a bolt-on B58? No. Boost Logic states directly that this package is not for basic bolt-on cars or mild builds staying near stock limits. It is intended for big turbo B58 engines running high boost on ethanol or race fuel, where cylinder pressure and rpm load the factory rods well beyond what they were designed to handle.
What steel are the rods made from? The rods are made from 4340 aircraft grade steel that is vacuum degassed for consistent material integrity. Each rod is shot peened to military specification to reduce surface stress and improve fatigue life, and every rod is individually Magnaflux inspected for structural integrity before it leaves production.
What else does a B58 build need alongside these rods? Boost Logic lists the rods and their ARP bolts, not pistons, bearings or machine work. A build at the power levels these rods target also needs pistons, a fuel system and a turbocharger matched to the goal, plus a custom tune. Bulletproof Automotive can help match Boost Logic pistons and other parts to the plan.

About Boost Logic

Boost Logic was founded in Austin, Texas in 2003 and made its name with Toyota Supra turbo kits, setting street car records at 6speed record days and the Texas Mile that stood long after the company stopped racing Supras competitively. It designs turbo systems, titanium exhausts, intercoolers and engine components for the Toyota Supra, Porsche 911 Turbo, Nissan GT-R, Ferrari and Lamborghini, and its R35 GT-R builds have trapped over 180 mph in the quarter mile and over 200 mph in the half mile.

Additional Information

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Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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