Checking wall thickness of an RB26

Interesting all the new development on the RB26, and GT-R platform. With the cars turning 25 years old, and legal to import to the USA, we are seeing a new bump in money being put into them. One thing many people ask about is the block. There are a number of blocks, from the standard 05U, to the RRR.  Dsport Garage measures a number of blocks and puts out the info in Issue #181 or online here. 

If you are building an RB, you have plenty of options. Since the price of used and new N1 blocks are higher than ever, you may want to consider having a standard 05U block sonic checked and offset bored to maximize the cylinder wall thickness on the overbored engine. This should be done only in the North-South orientation as you do not want to offset the cylinder position in reference to the crankshaft. While this won’t give the strength improvement from the higher nickel content (N1, RRR) in a premium block, it will still improve the overall strength of the overbored cylinder. In fact, having the cylinder bored so that the wall thickness is maximized in the process seems to be a valid protocol for any RB engine block. Hopefully, Club DSPORT will offer complete RB26 short block assemblies in the near future. Stay tuned.

Motive Garage, and Platinum racing products also recently measured some blocks, so it will be interesting to see all the data complied from two different sources.

RB26 information | R32 GT-R Buyers Guide

R32 and R35 GT-R at Laguna Seca on the Corkscrew

Buy USA Legal R32 Skylines at Importavehicle.com!
Buy-R.com for Nissan Skyline GT-R and GT-R parts.

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NGK Iridium IX Spark Plug LFR5AIX-11 (8 Pack) for NISSAN TITAN SE 2004-2008 5.6L/5552cc

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(as of July 14, 2026 05:22 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity. Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer NGK is the world's largest supplier of OEM spark plug… read more

OYEAUTO 93501 Iridium Spark Plugs LKAR7BIX11S 6 Pack Compatible with Nissan 370Z Maxima Murano Pathfinder Quest GT-R Altima 2001-2024 & Infiniti G37 QX60 Q60 2008-2024 & Acura MDX TLX 2017-2024 V6

(as of August 25, 2026 10:17 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

The details interface only displays some car models. To view all car models, please click on the top of the interface"make sure this fits" Fitment1: Nissan 370Z Maxima Murano Pathfinder Quest GT-R Altima 350Z Frontier|SL 2003-2024|SV 2009-2024|S 2004… read more

SYKRSS 6240 Iridium Spark Plugs 8 Pack Compatible with Nissan Armada Titan Pathfinder Armada 2004-2006 Compatible with INFINITI QX56 M45 FX45 Q45 2002-2010 4.5L 5.6L V8 Engine for PLFR5A-11 Spark Plug

(as of August 25, 2026 08:46 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【OE Standard】Our spark plugs meet or exceed OE specifications for form, fit and function and are perfect for automotive replacement spark plugs.Quick and easy installation, excellent and reliable performance. Premium spark plug kits are a quick and e… read more

BDFHYK LKAR6AIX-11 Iridium Spark Plugs Compatible with Chevy for Nissan 2007-2013 Altima 2008-2013 Rogue 2007-2012 Sentra 2013-2021 NV200 1.6L 1.8L 2.0L 2.5L L4 Engine Replacement for XP5684, Set of 4

(as of August 25, 2026 08:46 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【Compatibility Information】：Spark Plug LKAR6AIX-11 compatible with Nissan 2007-2013 Altima, 2009-2014 Cube, 2005-2019 Frontier, 2015-2019 Micra, 2013-2021 NV200, 2008-2013 Rogue, 2014-2015 Rogue Select, 2007-2019 Sentra, 2007-2019 Versa, 2014-2019 Ve… read more

Iridium Spark Plugs 8 Pack 93501 LKAR7BIX-11S Compatible with Nissan Armada NV2500 NV3500 TITAN INFINITI FX50 M56 Q70 Q70L QX56 QX70 QX80 V8 5.0L / 5.6L

(as of August 25, 2026 09:18 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

[Vehicle Fitment-1]: This automotive replacement spark plugs Compatible with INFINITI 2009 2010 2011 2012 2013 FX50 V8 5.0L, 2011 2012 2013 M56 V8 5.6L, 2014 2015 2016 2017 2018 2019 Q70 V8 5.6L, 2015 2016 2017 2018 2019 Q70L V8 5.6L, 2011 2012 2013 … read more

BDFHYK 93501 Iridium Spark Plugs Compatible with Nissan TITAN Altima Armada NV2500 NV3500, Compatible with INFINITI QX56 QX60 QX80 M56,CX-3 Replacement for LKAR7BIX11S Set of 8

(as of August 25, 2026 09:18 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【Compatibility Information】：Spark Plug 93501 Compatible with Acura ILX TLX; Compatible with Honda Accord Civic CR-V Fit HR-V; Compatible with INFINITI EX35 FX35 FX50 G25 G35 JX35 M35 M35h M56 Q50 Q70 Q70L QX56 QX60 QX70 QX80; Compatible with Nissan 3… read more

NGK V-Power Spark Plug – 2526

(as of August 25, 2026 10:17 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

NGK V-Power Spark Plug Item Package Dimension: 11.68L x 9.68W x 1.8H inches Item Package Weight – 0.42 Pounds Item Package Quantity – 1 Product Type – SPARK PLUG

Checking wall thickness of an RB26

Interesting all the new development on the RB26, and GT-R platform. With the cars turning 25 years old, and legal to import to the USA, we are seeing a new bump in money being put into them. One thing many people ask about is the block. There are a number of blocks, from the standard 05U, to the RRR.  Dsport Garage measures a number of blocks and puts out the info in Issue #181 or online here. 

If you are building an RB, you have plenty of options. Since the price of used and new N1 blocks are higher than ever, you may want to consider having a standard 05U block sonic checked and offset bored to maximize the cylinder wall thickness on the overbored engine. This should be done only in the North-South orientation as you do not want to offset the cylinder position in reference to the crankshaft. While this won’t give the strength improvement from the higher nickel content (N1, RRR) in a premium block, it will still improve the overall strength of the overbored cylinder. In fact, having the cylinder bored so that the wall thickness is maximized in the process seems to be a valid protocol for any RB engine block. Hopefully, Club DSPORT will offer complete RB26 short block assemblies in the near future. Stay tuned.

Motive Garage, and Platinum racing products also recently measured some blocks, so it will be interesting to see all the data complied from two different sources.

RB26 information | R32 GT-R Buyers Guide

R32 and R35 GT-R at Laguna Seca on the Corkscrew

Buy USA Legal R32 Skylines at Importavehicle.com!
Buy-R.com for Nissan Skyline GT-R and GT-R parts.

Now retrieving an image set.

NGK Iridium IX Spark Plug LFR5AIX-11 (8 Pack) for NISSAN TITAN SE 2004-2008 5.6L/5552cc

Now retrieving the rating.

(as of July 14, 2026 05:22 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity. Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer NGK is the world's largest supplier of OEM spark plug… read more

OYEAUTO 93501 Iridium Spark Plugs LKAR7BIX11S 6 Pack Compatible with Nissan 370Z Maxima Murano Pathfinder Quest GT-R Altima 2001-2024 & Infiniti G37 QX60 Q60 2008-2024 & Acura MDX TLX 2017-2024 V6

(as of August 25, 2026 10:17 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

The details interface only displays some car models. To view all car models, please click on the top of the interface"make sure this fits" Fitment1: Nissan 370Z Maxima Murano Pathfinder Quest GT-R Altima 350Z Frontier|SL 2003-2024|SV 2009-2024|S 2004… read more

SYKRSS 6240 Iridium Spark Plugs 8 Pack Compatible with Nissan Armada Titan Pathfinder Armada 2004-2006 Compatible with INFINITI QX56 M45 FX45 Q45 2002-2010 4.5L 5.6L V8 Engine for PLFR5A-11 Spark Plug

(as of August 25, 2026 08:46 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【OE Standard】Our spark plugs meet or exceed OE specifications for form, fit and function and are perfect for automotive replacement spark plugs.Quick and easy installation, excellent and reliable performance. Premium spark plug kits are a quick and e… read more

BDFHYK LKAR6AIX-11 Iridium Spark Plugs Compatible with Chevy for Nissan 2007-2013 Altima 2008-2013 Rogue 2007-2012 Sentra 2013-2021 NV200 1.6L 1.8L 2.0L 2.5L L4 Engine Replacement for XP5684, Set of 4

(as of August 25, 2026 08:46 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【Compatibility Information】：Spark Plug LKAR6AIX-11 compatible with Nissan 2007-2013 Altima, 2009-2014 Cube, 2005-2019 Frontier, 2015-2019 Micra, 2013-2021 NV200, 2008-2013 Rogue, 2014-2015 Rogue Select, 2007-2019 Sentra, 2007-2019 Versa, 2014-2019 Ve… read more

Iridium Spark Plugs 8 Pack 93501 LKAR7BIX-11S Compatible with Nissan Armada NV2500 NV3500 TITAN INFINITI FX50 M56 Q70 Q70L QX56 QX70 QX80 V8 5.0L / 5.6L

(as of August 25, 2026 09:18 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

[Vehicle Fitment-1]: This automotive replacement spark plugs Compatible with INFINITI 2009 2010 2011 2012 2013 FX50 V8 5.0L, 2011 2012 2013 M56 V8 5.6L, 2014 2015 2016 2017 2018 2019 Q70 V8 5.6L, 2015 2016 2017 2018 2019 Q70L V8 5.6L, 2011 2012 2013 … read more

BDFHYK 93501 Iridium Spark Plugs Compatible with Nissan TITAN Altima Armada NV2500 NV3500, Compatible with INFINITI QX56 QX60 QX80 M56,CX-3 Replacement for LKAR7BIX11S Set of 8

(as of August 25, 2026 09:18 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【Compatibility Information】：Spark Plug 93501 Compatible with Acura ILX TLX; Compatible with Honda Accord Civic CR-V Fit HR-V; Compatible with INFINITI EX35 FX35 FX50 G25 G35 JX35 M35 M35h M56 Q50 Q70 Q70L QX56 QX60 QX70 QX80; Compatible with Nissan 3… read more

NGK V-Power Spark Plug – 2526

(as of August 25, 2026 10:17 GMT +00:00 – More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

NGK V-Power Spark Plug Item Package Dimension: 11.68L x 9.68W x 1.8H inches Item Package Weight – 0.42 Pounds Item Package Quantity – 1 Product Type – SPARK PLUG