Litchfield GTR engine upgrade
litchfield logo
litchfield logo

GT-R ENGINE UPGRADES

The Litchfield GT-R engine program has been developed over many years and sees us working with the very best suppliers in the world. Our detailed testing programs, using our own vehicles, have allowed us to build up a unique understanding of the GT-R's VR38 engine, so we can tailor our engine programs to our customer requirements.


Litchfield GT-R engines are machined, honed and balanced on site in our dedicated machine shop and careful assembly in our clean room to the very highest standards. We use the best quality components to ensure that our high performance GT-R engines deliver exactly what our customers expect.


The Litchfield GT-R engine program has been developed over many years and sees us working with the very best suppliers in the world. Our detailed testing programs, using our own vehicles, have allowed us to build up a unique understanding of the GT-R's VR38 engine, so we can tailor our engine programs to our customer requirements.


The weakest link in the standard engine is the connecting rods. These have been known to fatigue over time, causing them to bend or break when subjected to high load.


However the work that goes into each of our forged 3.8 engines is so much more detailed than just replacing some of the weaker components with stronger items. For more information about how we produce our GT-R engines and the important extra levels of experience and detail that goes into them please read our blog post here.


Each engine is stripped, deep cleaned and inspected before being machined, honed, balanced and rebuilt in-house to our high standards, with all new internals, chains, seals and gaskets.


Whether we are modifying an existing engine or a new block the process is the same. Once cleaned and measured the block is carefully ‘Deck Plate Honed’ to insure all bore imperfections and distortion from the cylinder heads have been taken into account. This process is done on site using our dedicated equipment and experienced staff. The result is a perfect bore finish and shape that allows each piston to have the correct clearance. Having a more efficient and balanced engine will produce more power and less wear. The engine block also receives careful ‘Line Honing’ of the crank journals to insure they give a perfect mounting point for the bearings to control the crankshaft.


It’s not just the engine block that receives this level of attention; each cylinder head is fully disassembled, cleaned and measured. The combustion chambers have extensive machining to re-profile the squish angles for our revised pistons (dyno proven to produce more power), the valves seats are re-cut, ports refinished, replacement seals and the valves checked for length & straightness before being re-lapped in place. The cylinder head faces are also machined in-house to remove any distortion that occurred over time, insuring a superior fit.


To complete the engines we strip, clean and re-powder coat the engine covers, which gives a more durable, deeper finish than simply painting. The Rocker covers are finished in a dark metallic grey to give a classy look and avoid corrosion. We also offer the option of custom colours should you want a more individual engine bay.


We have created a large number of engines over the years and their strength and reliability are backed by our comprehensive 12-month warranty package (UK customers only). Like-for-like our 3.8 engines produce more power and torque throughout the rev range thanks to its modified block, combustion chambers and unique piston design. The revised engine will provide enough strength for over 1000 bhp whilst being smoother than and just as easy to maintain as the original engine.

GTR engine upgrade 2
GTR engine upgrade 3

We have separated our engine builds into four different categories;


Litchfield Rod Conversion & Engine Refresh

Designed for higher mileage or standard engines running high power this comprehensive rebuild of the rotating assembly in the Short engine and fortifies it with our upgraded Connecting Rods. Ideal for customers looking for reliable power levels around 800bhp.


Litchfield 3.8 Engine

Designed to remove the standard engine's weak areas and replace them with unique components capable of handling up to 900bhp-1000+bhp. The perfect choice for special road car builds.


Litchfield Sport Engine

Combining the finest components with hours of craftsmanship, blue-printing every component. Proven competition pedigree and perfect road manners ensure solid reliability up to 1,500bhp. Available in a range of engine sizes from 3.8 to 'Red top' 4.6 litre.


Litchfield Billet Race Engine

These engines are based around our very own CNC machined Aluminium billet engine block. These blocks represent the ultimate in durability for ultra-high power builds and those customers looking for competitive edge.



Litchfield Rod Conversion & Engine Refresh



The Nissan GT-R's VR38 engine is an incredible piece of engineering, which has proved to be exceptionally reliable, even with large changes from it’s original 476bhp output.

With the GT-R being available in the UK since 2009 (earlier with JDM cars) the engines are naturally of an age and likely a mileage where the owner should be considering a rebuild. As many of these GT-Rs will be running more than standard power a refresh would be sensible to avoid expensive failures. The weakest link in the standard engine is the connecting rods. These have been known to fatigue over time or oil pressure problems from worn internal parts can cause the road bearings to fail which ultimately leads to the Rods bending or breaking when subjected to higher loads.

Our Rod Conversion option is designed with these cars in mind and replaces the bearings, seals, rings and gaskets in the rotating. Adding our stronger Rod’s gives additional piece of mind and allows power levels of around 800bhp to be achieved reliably with supporting modifications.


Litchfield GTR Rod Conversion

Our Rod Conversion & Engine Refresh includes:


  • Air conditioning De-gas and Re-gas
  • Remove the engine
  • Labour to strip and inspect the existing components
  • Labour to balance crank shaft
  • Clean engine components through hot tank, ultra-sonic tanks and sodium blasting
  • Labour to install upgraded rods and reassemble engine
  • Labour to refit engine
  • 4 Wheel alignment
  • Running in on 4wd Maha dyno
  • Joe Gibbs Running in oil with subsequent change to Castrol 10w60 Supercar oil
  • Road test and inspections

New Parts included are:


  • Nissan engine gasket set
  • Nissan Head gasket set
  • Engine oil cooler gaskets
  • Nissan rod bearing set
  • Nissan Main bearing set
  • Nissan Piston ring set
  • Litchfield/Callies upgraded connecting rods
  • Dodson Motorsport metal engine gasket set
  • Coolant
  • Nissan Oil filter for running in
  • Litchfield large GT-R oil filter

This engine option is a drive in drive out service and comes with a 12 month / 12,000 mile warranty on the refreshed short engine.


Pricing



Litchfield Rod Conversion & Engine Refresh

£4,497.47 exc. VAT

£5,396.96 inc. VAT



Some additional parts may be required when the engine is inspected but popular additions are:



Litchfield Air pump delete plates


£25.00 exc. VAT

Engine main covers and rocker covers painted


£395.00 exc. VAT

Timing chains (3 chain set if original chains have stretched)


£375.00 exc. VAT

Nissan Auxiliary belt (if original is worn or damaged)


£92.56 exc. VAT

Nissan Oil pump (if original is worn or damaged)


£450.00 exc. VAT

Nissan water pump (if original is worn or damaged)


£85.00 exc. VAT

Stage 4.5 turbos (~750bhp with supporting mods)


£2,795.00 exc. VAT

Stage 5 6758 EFR turbos (~900bhp with supporting mods)


£4,495.00 exc. VAT


Litchfield 3.8 Engine



Our forged 3.8 engine builds are designed for customer wanting to produce serious power and feature a number of unique parts for both reliability and performance.

The work that goes into each of our forged 3.8 engines is so much more detailed than just replacing some of the weaker components with stronger items. Each engine is stripped, cleaned and inspected before being machined, honed, balanced and rebuilt in-house to our high standards, with all new internals, seals and gaskets.

More detailed information about the work that goes into our engine builds can be found on our Detailed Look At A GT-R Engine Build Blog Post.

We have created a huge number of engines over the years and their strength and reliability are backed by our comprehensive 12 month warranty package (UK customers only). Like-for-like our 3.8 engine produces more power and torque throughout the rev range thanks to its modified cylinder heads and unique piston design. The revised engine will provide enough strength for over 1,000 bhp whilst being smoother and just as easy to maintain as the original engine.


Litchfield GTR 3.8 engine

Below are just some of the components that are changed or modified within each Litchfield 3.8 engine:


3.8 Features:

  • Deck plate honed bores ensuring perfect piston to bore clearance
  • Line honed block and cradle to provide ideal clearance on crank bearings
  • Litchfield GT-R Custom Forged Capricorn Piston set with new Piston Rings
  • Upgraded Capricorn gudgeon pins
  • Litchfield GT-R Custom Forged Connecting Rods by Callie Performance
  • Upgraded connecting rod bolts from ARP
  • New Nissan main stud bolt kit
  • Balanced Engine internals and Crank
  • Dodson upgraded engine seal plates
  • Valve seats are recut and valves lapped for a perfect fit
  • New Nissan cylinder head Valve Stem seals
  • Cylinder head buckets re-shimmed to Litchfield tolerances
  • Modified and tested oil pump
  • Modified oil pick up pipe
  • Modified engine sump
  • Modified chain guide tensioner
  • Litchfield chine guide plate
  • New NGK Spark plugs
  • New Nissan steel head gasket
  • New Nissan crank shaft bearings each individually graded to their journals
  • New Nissan connecting rod bearings each individually graded to their journals
  • New Nissan Engine gaskets and seals
  • Modified and upgraded engine oil filter
  • Litchfield Engine cleanse with sodium blasted cylinder heads and valves
  • Optional painted engine covers and rocker covers (colour choices available)
  • Hot washed, chemically and ultra-sonic cleaned engine components
  • Assembled in our engine clean room with internal dust extraction.
  • 12 months / 12,000 mile Litchfield Warranty package for UK customers
  • Labour to remove, strip and rebuild engine new specification
  • 4 Wheel Laser Alignment
  • Joe Gibbs running in oil with New Nissan oil filter
  • Running engine in on our 4wd Maha dyno
  • Engine inspections and oil change to Castrol 10w60 Supercar Fully Synthetic oil
  • Litchfield Large capacity oil filter
  • Road test

This work is priced at £8,380.06 inc. VAT (£6,983.38 exc. VAT) as a drive in drive out service. Some additional Nissan parts may be required if the original engine components are worn but this is one a case by case bases depending on age and mileage.


Pricing



Litchfield 3.8 Engine

£6,983.38 exc. VAT

£8,380.06 inc. VAT



Some additional parts may be required when the engine is inspected but popular additions are:



Litchfield Air pump delete plates


£25.00 exc. VAT

Engine main covers and rocker covers painted


£395.00 exc. VAT

Timing chains (3 chain set if original chains have stretched)


£375.00 exc. VAT

Nissan Auxiliary belt (if original is worn or damaged)


£92.56 exc. VAT

Nissan Oil pump (if original is worn or damaged)


£450.00 exc. VAT

Nissan water pump (if original is worn or damaged)


£85.00 exc. VAT

ARP Main stud upgrade (in exchange for new Nissan studs)


£187.69 exc. VAT

Litchfield Sport Cams


£940.00 exc. VAT

Litchfield cylinder head valve train upgrade kit (LM Ti retainers, LM valve springs, LM spring seats) for higher revs


£787.80 exc. VAT

Supertech intake & exhaust valves (recommended for higher revs with LM valve train upgrade kit)


£802.80 exc. VAT

Stage 4.5 turbos (~750bhp with supporting mods)


£2,795.00 exc. VAT

Stage 5 6758 EFR turbos (~900bhp with supporting mods)


£4,495.00 exc. VAT

LM900 6758 EFR turbo manifold kit (~950bhp with supporting mods)


£7,595.00 exc. VAT

LM1000 7163 EFR turbo manifold kit (~1000bhp with supporting mods)


£7,795.00 exc. VAT




Litchfield Sport Engine



Our popular Sport series engine can be seen on our GT-R demonstrator and customer cars that have covered thousands of miles both on the road and on numerous tracks including the famous Nurburgring.


The Sport engine provides the ultimate base for maximum road and track performance, whilst providing the very best reliability. These competition-proven engines utilise the finest materials within their components, with hours of craftsmanship and care poured into each blue-printed assembly.



Litchfield GTR Sport engine

A range of specifications can be selected to suit each customer’s goals, whilst ensuring perfect road manners and reliability that match the huge performance.


Available in engine sizes from 3.8 to 'Red top' 4.6 litre and capable of supporting power levels up to 1,500bhp on Race Fuel.


The 2017 specification Sport engine features a number of small improvements including revised Capricorn pistons, Titanium valve retainers and upgraded valves seats to name a few.



Sport Engine features:

  • Gen2 Litchfield Sport Camshafts with increased lift and duration whilst maintaining excellent idle control and low speed performance.
  • Litchfield custom valve springs, ensuring correct valve pressure but with reduced valve train noise and valve train wear.
  • Litchfield Ported and Polished inlet and exhaust port design
  • Welded and reinforced heavy duty cylinder head design
  • Litchfield machined combustion chamber with revised squish angles
  • Litchfield produced Titanium valve spring retainers
  • Upgraded oversized valves
  • Internally machined F1 specification Copper valve guides
  • Internally machined F1 specification Copper valve seats
  • Litchfield secondary air pump deletes
  • Deck plate honed bores ensuring perfect piston to bore clearance
  • Optional internally machined and installed heavy duty cylinder liners
  • Line honed block and cradle to provide ideal clearance on crank bearings
  • Block machined and honed to smooth oil and water path ways
  • Reinforced block design with additional support for block to cradle mounting
  • Litchfield Billet cradle with reinforced ladder design with stronger dowels
  • Superfinished crank shaft (Billet and stroker cranks options available)
  • Fluid Crank Pulley for improved crank damping
  • Litchfield GT-R Custom Forged Capricorn Piston set with new Piston Rings
  • Internally machined piston crown design for improved combustion swirl
  • Upgraded Capricorn gudgeon pins
  • Litchfield GT-R Custom Forged Connecting Rods produced in UK by Arrow Precision
  • Upgraded connecting rod bolts
  • ARP Main stud bolt kit
  • Balanced Engine internals and Crank balanced
  • Dodson upgraded engine seal plates
  • Modified combustion chamber and squish angles
  • Valve seats are recut and valves lapped for a perfect fit
  • Upgraded Litchfield VVT seals
  • Modified water pump
  • Modified and tested oil pump
  • Modified oil pick up pipe
  • New Nissan timing chains
  • New NGK Spark plugs
  • Upgraded steel head gasket with modified water ways
  • Upgraded crank shaft bearings each individually graded to their journals
  • Upgraded connecting rod bearings each individually graded to their journals
  • New bearings, engine gaskets and seals
  • Modified and upgraded engine oil filter
  • Litchfield Engine cleanse
  • Powder coated engine covers and Magnesium finished rocker covers (colour options available)
  • New Nissan Aux belt
  • Hot washed and chemically cleaned engine components
  • Assembled in our engine clean room with internal dust extraction.
  • Litchfield Warranty package for UK customers

Pricing



Litchfield Sport Engine

£14,759.00 ex VAT

£17,710.80 inc. VAT





Litchfield Billet Race Engine



Our billet race engine program started in late 2015 with the design of our CNC engine cradle. This successful development program led to the logical next step, which was to produce the full Litchfield Billet Block.


In simple terms the Litchfield Billet Block allows our proven Sport Engine components to be pushed further; safe in the knowledge that the surrounding material is capable of taking the strain. It offers not only the maximum strength, but also gives us greater flexibility with our larger capacity engines and is aimed at competition use and for those customers that want the best possible components.


Litchfield GTR Billet Race Engine

The Litchfield Billet Block was designed in-house by Chief Engineer Steve and Director Iain Litchfield with advice from leading industry experts. It allows us to have larger engine sizes designed specifically to take our new internals, without sacrificing a perfectly good original block in the process. This means customers can retain or part exchange their existing short engines to reduce the costs. The design has also allowed us to improve oil and water pathways, along with the use of much larger head studs and fastenings.


Litchfield GTR billet block 1
Litchfield GTR billet block 2
Litchfield GTR billet block 3
Litchfield GTR billet block 4
Litchfield GTR billet block 5
Litchfield GTR billet block 6
Litchfield GTR billet block 7


The new block is machined from heat-treated billet by a highly skilled team here in the UK. The final assembly, including the careful installation of the Capricorn liners, takes place in our machine shop.


Billet Race Engine includes:

  • Unique Litchfield Billet CNC Engine Block made from Heated treated Aluminium
  • Reinforced cylinder liners available in a range of sizes and finishes to suit each build
  • Deck plate honed bores insuring perfect piston to bore clearance
  • Line honed block and cradle to provide ideal clearance on crank bearings
  • Block CNC machined and honed to smooth and enlarger oil and water path ways
  • Reinforced block design with additional support for block to cradle mounting
  • LM Large diameter Head Studs
  • Litchfield Billet cradle with reinforced ladder design with stronger dowels
  • Gen2 Litchfield Sport Camshafts with increased lift and duration whilst maintaining excellent idle control and low speed performance
  • Litchfield custom valve springs, ensuring correct valve pressure but with reduced valve train noise and valve train wear
  • Litchfield Ported and Polished inlet and exhaust port design
  • Welded and reinforced heavy duty cylinder head design
  • Litchfield machined combustion chamber with revised squish angles
  • Litchfield produced Titanium valve spring retainers
  • Upgraded oversized valves
  • Internally machined F1 specification Copper valve guides
  • Internally machined F1 specification Copper valve seats
  • Litchfield secondary air pump deletes
  • Superfinished crank shaft (Billet and stroker cranks options available)
  • Fluid Crank Pulley for improved crank damping
  • Litchfield GT-R Custom Forged Capricorn Piston set with new Piston Rings
  • Internally machined piston crown design for improved combustion swirl
  • Upgraded Capricorn gudgeon pins
  • Litchfield GT-R Custom Forged Connecting Rods produced in UK by Arrow Precision
  • Upgraded connecting rod bolts
  • ARP Main stud bolt kit
  • Balanced Engine internals and Crank balanced
  • Dodson upgraded engine seal plates
  • Modified combustion chamber and squish angles
  • Valve seats are recut and valves lapped for a perfect fit
  • Upgraded Litchfield VVT seals
  • Modified water pump
  • Modified and tested oil pump
  • Modified oil pick up pipe
  • New Nissan timing chains
  • New NGK Spark plugs
  • Upgraded steel head gasket with modified water ways
  • Upgraded crank shaft bearings each individually graded to their journals
  • Upgraded connecting rod bearings each individually graded to their journals
  • New bearings, engine gaskets and seals
  • Modified and upgraded engine oil filter
  • Litchfield Engine cleanse
  • Powder coated engine covers and Magnesium finished rocker covers (colour options available)
  • New Nissan Aux belt
  • Hot washed and chemically cleaned engine components
  • Assembled in our engine clean room with internal dust extraction.
  • Litchfield Warranty package for UK customers

Pricing



Litchfield Billet Race Engine

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