What does the core option mean on the Boost Logic Stroker Short Block for R35?

The Stroker Short Block for R35 is built on a VR38 block. Send In Your Core means you ship your existing engine core to Boost Logic and it is built into the stroker short block. Brand New OEM Core means Boost Logic builds the short block on a new factory core instead, which costs more and means no core needs to be sent in.

What displacement and stroke does the short block have?

Boost Logic uses a custom billet 4340 steel crankshaft with a 94 millimeter stroke, which raises the VR38DETT from its factory 3.8 liters to 4.1 liters. The added stroke is what Boost Logic credits for improved spool and torque, alongside the strength needed to handle big power in drag and endurance road racing.

Which rods and pistons are used?

The short block uses Manley Turbo Tuff VR38 connecting rods and Manley Platinum Series VR38 lightweight forged pistons, both specified by Boost Logic for this build. Boost Logic adds its own special coated engine bearings and completes the precision assembly, so the bottom end arrives as a finished unit rather than a box of parts.

Are cylinder heads included?

No. This is a short block, meaning the block, crankshaft, rods, pistons and bearings assembled together. Cylinder heads and the other parts needed to complete the engine are not included. Boost Logic sells head packages for the R35 separately, and Bulletproof Automotive can help match one to the power target.

What is the C350 wrist pin upgrade?

It is an optional wrist pin upgrade in C350, a material Boost Logic sources from Austria and says is used across Pro Mod level platforms making more than 3,000 horsepower. It is offered at extra cost for builds that want more margin at the pin, and Bulletproof Automotive can add it to the order on request.

How does this compare to the 4.1L stroker kit?

Both reach 4.1 liters with a billet 4340 crankshaft and 94 millimeter stroke. The stroker kit is supplied as loose parts with Manley H beam stroker rods and custom Diamond pistons for your engine builder to install, while the short block arrives assembled by Boost Logic with Manley Turbo Tuff rods, Platinum Series pistons and coated bearings.

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Description

Boost Logic 4.1L Stroker Short Block for R35 Nissan GT-R

Boost Logic’s Stroker Short Block for R35 Nissan GT-R is an assembled 4.1-liter VR38 bottom end for owners chasing big power who also want quicker spool and more torque than the 3.8-liter engine gives. Boost Logic pairs a custom billet 4340 steel crankshaft with a 94mm stroke, Manley Turbo Tuff VR38 connecting rods and Manley Platinum Series lightweight forged pistons built to its own spec, adds special coated bearings and finishes the block with its own precision assembly. Boost Logic builds it for weekend drag racing and endurance road course use alike. For a GT-R staying near factory output it is far more engine than the car needs.

Construction

The 94mm stroke billet crankshaft is what takes displacement to 4.1 liters, and Boost Logic specifies the Manley rods and pistons around it to its own requirements. The short block is supplied one of two ways: send Boost Logic your own VR38 core to be built, or have it built on a brand new OEM core.

Features

Custom billet 4340 steel crankshaft with a 94mm stroke
Boost Logic spec Manley Turbo Tuff VR38 connecting rods
Boost Logic spec Manley Platinum Series lightweight forged pistons
Boost Logic special coated engine bearings
Boost Logic precision assembly, delivered as a complete short block
Added stroke improves spool and torque, per Boost Logic

What’s Included

Assembled 4.1L VR38 short block
Billet 4340 steel crankshaft, 94mm stroke
Manley Turbo Tuff VR38 connecting rods
Manley Platinum Series forged pistons
Boost Logic coated engine bearings

Applications

Nissan GT-R: R35 | 2009-2024 | 3.8L VR38DETT V6

Notes

This is a short block: cylinder heads and engine externals are not included
Choose Send In Your Core to have Boost Logic build your existing VR38 block, or Brand New OEM Core to have it built on a new factory core at additional cost
Boost Logic offers a C350 wrist pin upgrade, in a material sourced from Austria and used in Pro Mod platforms over 3,000 hp, available through Bulletproof Automotive at extra cost
The Stroker Short Block for R35 is built for high horsepower drag and road course use; plan turbochargers, fuel and tuning to suit
For the same displacement as loose parts for your own engine builder, Boost Logic sells the Boost Logic 4.1L Stroker Kit for R35 Nissan GT-R (BL4.1SKNRG09)

Frequently Asked Questions

What does the core option mean on the Boost Logic Stroker Short Block for R35? The Stroker Short Block for R35 is built on a VR38 block. Send In Your Core means you ship your existing engine core to Boost Logic and it is built into the stroker short block. Brand New OEM Core means Boost Logic builds the short block on a new factory core instead, which costs more and means no core needs to be sent in.
What displacement and stroke does the short block have? Boost Logic uses a custom billet 4340 steel crankshaft with a 94 millimeter stroke, which raises the VR38DETT from its factory 3.8 liters to 4.1 liters. The added stroke is what Boost Logic credits for improved spool and torque, alongside the strength needed to handle big power in drag and endurance road racing.
Which rods and pistons are used? The short block uses Manley Turbo Tuff VR38 connecting rods and Manley Platinum Series VR38 lightweight forged pistons, both specified by Boost Logic for this build. Boost Logic adds its own special coated engine bearings and completes the precision assembly, so the bottom end arrives as a finished unit rather than a box of parts.
Are cylinder heads included? No. This is a short block, meaning the block, crankshaft, rods, pistons and bearings assembled together. Cylinder heads and the other parts needed to complete the engine are not included. Boost Logic sells head packages for the R35 separately, and Bulletproof Automotive can help match one to the power target.
What is the C350 wrist pin upgrade? It is an optional wrist pin upgrade in C350, a material Boost Logic sources from Austria and says is used across Pro Mod level platforms making more than 3,000 horsepower. It is offered at extra cost for builds that want more margin at the pin, and Bulletproof Automotive can add it to the order on request.
How does this compare to the 4.1L stroker kit? Both reach 4.1 liters with a billet 4340 crankshaft and 94 millimeter stroke. The stroker kit is supplied as loose parts with Manley H beam stroker rods and custom Diamond pistons for your engine builder to install, while the short block arrives assembled by Boost Logic with Manley Turbo Tuff rods, Platinum Series pistons and coated bearings.

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

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

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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Boost Logic 4.1L Stroker Short Block for R35 Nissan GT-R

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Boost Logic 4.1L Stroker Short Block for R35 Nissan GT-R

Construction

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About Boost Logic

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