What does the +0.25mm sizing mean for these bearings?

The +0.25mm sizing indicates that these bearings are slightly larger than standard size. This is typically used when the engine's crankshaft journals have been machined down by 0.010 inches (0.25mm) to remove imperfections or wear. It's crucial to ensure your crankshaft is machined to this specific size before installing these bearings.

What is the benefit of the pMaxKote polymer coating?

The pMaxKote coating is a polymer layer applied to the bearing surface. It offers a low-friction interface that helps protect both the bearing and the crankshaft journal from wear, especially during the critical initial startup phase and under high-stress conditions common in performance engines.

Are these bearings suitable for a stock engine rebuild?

While these are performance bearings with a polymer coating, they can be used in a stock engine rebuild if the crankshaft journals have been machined to the +0.25mm size. For a standard rebuild without any machining, you would typically need standard size bearings.

Specifications

Brand: King Engine Bearings
Part #: CR6870XPNC0.25
UPC: 611500615269

King Engine Bearings Nissan VR38DETT pMaxKote Performance Con Rod Bearing Set - Size +0.25mm

Name: King Engine Bearings Nissan VR38DETT pMaxKote Performance Con Rod Bearing Set - Size +0.25mm
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-nissan-vr38dett-pmaxkote-performance-c-t14-542810
Price: 437.03 USD
Availability: BackOrder

$437.03

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King Engine Bearings performance con rod bearing set for Nissan VR38DETT, +0.25mm size. Features pMaxKote polymer coating for improved durability.

Key Features

Fits 2009-2021 Nissan GT-R, 2009-2017 Nissan 370Z, and select 2008-2017 Infiniti models.
Features King's pMaxKote polymer coating for improved wear resistance and reduced friction.
Designed for the Nissan VR38DETT engine and compatible VQ-series engines.
This set is sized at +0.25mm, intended for crankshafts that have been machined to this undersize.
Well-built connecting rod bearings for performance and racing applications.
Helps protect crankshaft journals from wear during high-stress operation.

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About this part

Product Details

The pMaxKote polymer coating on these King Engine Bearings connecting rod bearings is a notable design choice, offering a tough, low-friction surface that helps protect the bearing and the crankshaft journal during high-stress operation. These bearings are specifically made for the Nissan VR38DETT engine, found in the GT-R, and also fit a range of Infiniti models like the G37, M37, and Q50, as well as the Nissan 370Z. They come at a +0.25mm size, which is important if you're rebuilding or refreshing an engine that has already had its crankshaft ground down.

King Engine Bearings is known for making well-built engine components, and this racing line set is no exception. The polymer coating works to reduce friction and wear, which is critical in performance applications where oil film strength can be challenged. This means better protection for your engine's rotating assembly, especially under demanding conditions. The bearings are designed to fit right into the specified engines, making them a solid option for builders looking for reliable internal engine parts.

When installing these bearings, remember they are sized at +0.25mm, so ensure your crankshaft journals have been machined to this specific size. Proper installation and oil clearance are key to getting the most out of these performance bearings and ensuring the longevity of your VR38DETT or compatible VQ-series engine.