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Home  »  Engine, Transmission, wheels/Tyres and Heating/Cooling  »  ENGINES and COMPONENTS  »  GASKETS AND SEALANT  »  HEAD GASKETS  »  SPECIAL HEAD GASKETS  »  GASKET HEAD COPPER with FI TR2-4A 2.5mm THICK

GASKET HEAD COPPER with FI TR2-4A 2.5mm THICK

RTR Upgrade
Part No:
RTR1010-2.5K
Price
£205.24
Price Ex VAT @ 20%
£171.03

AVAILABLE This part is available to order

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TR2-4A Solid copper head gasket nominally 2.5mm thick (depending on material availability, the gasket may be slightly thicker or thinner). our gaskets come with fitting instructions to show how to adjust the shape of the gasket to ideally suit the dimensions of the head and how to anneal the gasket before use. These gaskets are renewable once re-annealed.

Available in nominal thicknesses of 0.5, 1.0, 1.2, 1.5, 2.0 and 2.5mm, various thicknesses allow for alteration to compression ratio especially where too much material has been removed from the head in the past. Suitable for all engines of bore 83mm to 93mm. These gaskets come with fitting instructions as they need to be annealed before use and can be reused after annealing.

We are often asked if it is acceptable to skim xxxx thousands of an inch or xxxx mm of a cylinder head when another (usually longer duration) cam is installed.
This approach to head skimming, whilst in principle is correct (to increase compression ratio with a longer duration cam), by simply shaving off a number or thou is not the correct way to go about it as there are other factors to consider such as gasket thickness, combustion chamber size and piston diameter.
What you should be doing is: -
1. Measure deck height (height of pistons below the face of the block)
2. Measure piston diameter
3. Measure head volume (usually done with a piece of Perspex set over the head with grease to act as a sealant with two small holes, one to introduce measured quantities of paraffin and the other to let air out)
4. Measure gasket thickness. The special head gaskets we supply made of solid copper can be shaped to match the combustion chamber. This would be 1-1.5mm thick usually if the head is likely to be skimmed. In some cases the head is already too thin in which case we have various sizes up to 2.5mm thick.
5. Choose a suitable compression ration as advised by your cam supplier (likely to be 9.75-10:1 for a fast road cam, up to 10.5:1 for a sprint or rally cam and up to 11.5:1 for a race cam)
6. Calculate head volume required and give this information to your machinist to machine off the right amount to achieve the correct head volume. RevingtonTR can calculate this for you as we have a spreadsheet set up for this.

The following example may be helpful

A standard copper asbestos (or modern equivalent) gasket is 1.3mm thick when crushed.

So for example with: -

86mm bore

Gasket 1.3mm

Deck height 0.08 (usual) of the piston below the block (not the liner)

With a 92 mm stoke

A 9.5:1 compression ratio will require a head volume of 55cc. 

In conclusion when the head is being fitted it is important to know what compression ration you need, the dimensions mentioned above and the measurement of the head volume so that the correct gasket can be purchased.

You will need, and we can supply

Copper head gasket which can be fashioned to suit the head shape.
Heldite sealant
Suitable push rods
Other gaskets

Once you have done this you can expect the engine to run badly until it is properly tuned on a rolling road to ensure the engine's ignition and carburation settings are correct throughout the rev and power range. Depending on where you are in the world that might prove easy or difficult. For those customers within reach of RevingtonTR in Somerset we can offer this tuning service as we have an 800hp rolling road in our workshops.

Engine, Transmission, wheels/Tyres and Heating/Cooling

17 plates in total

ENGINE (Petrol Injection Model): Block and Sump Engine Unit 9.5:1, Decarbonising Gasket Set, Engine Gasket Set, Cylinder Block, Cylinder Liner, Rear Oil Seal Housing, Oil Pressure Adjustment Details, Oil Pump Assembly, Oil Sump Assembly, Dipstick Assembly, Front Engine Plate, Engine Mounting Bracket Assy, Rear Engine Plate, Engine Lifting Eyes, Oil Pressure Switch

PLATE N - ENGINE (Petrol Injection Model): Block and Sump Engine Unit 9.5:1, Decarbonising Gasket Set, Engine Gasket Set, Cylinder Block, Cylinder Liner, Rear Oil Seal Housing, Oil Pressure Adjustment Details, Oil Pump Assembly, Oil Sump Assembly, Dipstick Assembly, Front Engine Plate, Engine Mounting Bracket Assy, Rear Engine Plate, Engine Lifting Eyes, Oil Pressure Switch

ENGINE (Petrol Injection Model): Crankshaft, Camshaft, Pistons and Flywheel Crankshaft Assembly, Fan Assembly, Flywheel Assembly, Camshaft, Timing Cover Assembly, COnnecting Rod Assembly, Piston Assembly, Drive Shaft Assembly, Pedestal Assembly - Distributor and Petrol Injection Metering Pump

PLATE Q - ENGINE (Petrol Injection Model): Crankshaft, Camshaft, Pistons and Flywheel Crankshaft Assembly, Fan Assembly, Flywheel Assembly, Camshaft, Timing Cover Assembly, COnnecting Rod Assembly, Piston Assembly, Drive Shaft Assembly, Pedestal Assembly - Distributor and Petrol Injection Metering Pump

ENGINE (Petrol Injection Model): Oil Filter Oil Filter Assembly (Full Flow)

PLATE W - ENGINE (Petrol Injection Model): Oil Filter Oil Filter Assembly (Full Flow)

ENGINE (Petrol Injection Model): Cylinder Head and Rocker Assemblies Cylinder Head Assembly 9.5:1, Valves, Push Rod, Tappet, Rocker Shaft, Rocker Cover Assembly

PLATE P - ENGINE (Petrol Injection Model): Cylinder Head and Rocker Assemblies Cylinder Head Assembly 9.5:1, Valves, Push Rod, Tappet, Rocker Shaft, Rocker Cover Assembly

ENGINE (Petrol Injection Model): Alternator Mounting

PLATE X - ENGINE (Petrol Injection Model): Alternator Mounting

ENGINE (Petrol Injection Model): Closed Circuit Breather

PLATE T - ENGINE (Petrol Injection Model): Closed Circuit Breather

ENGINE (Petrol Injection Model): Water Pump and Thermostat Water Pump Details, Thermostat Unit, Temperature Transmitter

PLATE R - ENGINE (Petrol Injection Model): Water Pump and Thermostat Water Pump Details, Thermostat Unit, Temperature Transmitter

ENGINE (Petrol Injection Model): Manifolds and Heater Pipe Exhaust and Inlet Manifold, Manifold Gasket, Throttle Spindles and Butterflies, Heater Pipe-solid under manifolds

PLATE S - ENGINE (Petrol Injection Model): Manifolds and Heater Pipe Exhaust and Inlet Manifold, Manifold Gasket, Throttle Spindles and Butterflies, Heater Pipe-solid under manifolds

CLUTCH: Clutch Assembly and Operation Clutch Cover Assembly - Borg and Beck, Driven Plate Assembly - Borg and Beck, Clutch Cover Assembly - Laycock, Driven Plate Assembly - Laycock, Clutch Throw Out Bearing, Clutch Operating Fork, Clutch Operating Shaft Assembly, Clutch Slave Cylinder Assembly (1

PLATE Y - CLUTCH: Clutch Assembly and Operation Clutch Cover Assembly - Borg and Beck, Driven Plate Assembly - Borg and Beck, Clutch Cover Assembly - Laycock, Driven Plate Assembly - Laycock, Clutch Throw Out Bearing, Clutch Operating Fork, Clutch Operating Shaft Assembly, Clutch Slave Cylinder Assembly (1")

GEARBOX: External Gearbox Unit, Gearbox Gasket Set, Gearbox and Clutch housing Assembly, Front End Cover, Gearbox Extension, Speedo Driven Gear and Bearing, Top Cover Assembly, Change Speed Lever Assembly, Gearbox Attachment Details, Rear Engine Mounting

PLATE Z - GEARBOX: External Gearbox Unit, Gearbox Gasket Set, Gearbox and Clutch housing Assembly, Front End Cover, Gearbox Extension, Speedo Driven Gear and Bearing, Top Cover Assembly, Change Speed Lever Assembly, Gearbox Attachment Details, Rear Engine Mounting

GEARBOX: Internal Mainshaft, Constant Gear Train Assembly, Constant Pinion Shaft, Countershaft, Reverse Spindle, Reverse Operating Lever Assembly

PLATE AA - GEARBOX: Internal Mainshaft, Constant Gear Train Assembly, Constant Pinion Shaft, Countershaft, Reverse Spindle, Reverse Operating Lever Assembly

OVERDRIVE: 'A' Type: Kit

PLATE CA - OVERDRIVE: 'A' Type: Kit

OVERDRIVE: 'A' Type: Unit Assembly

PLATE CB - OVERDRIVE: 'A' Type: Unit Assembly

PROPELLOR SHAFT AND ROAD WHEELS Propellor Shaft, Disc Road Wheel, Centre Lock Wire Wheels, Balance Weights, Wheel Trim - Road Wheels

PLATE AG - PROPELLOR SHAFT AND ROAD WHEELS Propellor Shaft, Disc Road Wheel, Centre Lock Wire Wheels, Balance Weights, Wheel Trim - Road Wheels

INDEPENDENT REAR AXLE Rear Axle Center Assembly, Crown Wheel and Pinion Assembly, Inner Axle Shaft, Rear Axle Shaft and Hub Assembly, Outer Axle Shaft Assembly, Sleeve Yoke and Yoke Shaft Assembly, Drive Flange and Hub Assembly

PLATE AE - INDEPENDENT REAR AXLE Rear Axle Center Assembly, Crown Wheel and Pinion Assembly, Inner Axle Shaft, Rear Axle Shaft and Hub Assembly, Outer Axle Shaft Assembly, Sleeve Yoke and Yoke Shaft Assembly, Drive Flange and Hub Assembly

RADIATOR Radiator Block Assembly, Overflow Bottle

PLATE AV - RADIATOR Radiator Block Assembly, Overflow Bottle

BODY AND FITTINGS: Heater Heater Details, Demister Outlet

PLATE BR - BODY AND FITTINGS: Heater Heater Details, Demister Outlet