Toyhead Auto Restoration Services
Toyota Specialist

Specializing in Parts, Products and Accessories for Toyotas.

18RG Parts
All parts are high performance racing grade

Note: these parts will fit all 18RG series motors including
18R-GU, 18R-GR, 18R-GEU

Information and Modification tips for 2T-G, 18R-G, and 3T-GTE Toyota Engines.

NEW!!! 18RG Engine Overhaul Gasket Kit

Toyota 18RG, 18R-GEU engine gasket kit overhaul complete

Available for both 18R-G, and 18R-GEU engines. Price $352.00 USD

A complete Engine Overhaul Gasket Kit for the Toyota 18RG engines.
High quality gasket materials combined with precision manufacturing.
(Please note, does not come with head gasket. See racing and OEM type head gaskets further down on this page)


NEW!!! 18RG Valve Cover Gasket Set
Comes valve cover gasket and spark plug grommets $110.92

18RG Heavy Duty Engine Starter

1.0 kw

Price $407.00

Heavy Duty Alternator


More performance power for your ignition and accessories.
Comes with special adapter harness as shown in picture above.
These alternators have internal regulators. 

80 amp
Price $481.00

NEW!!! 90 amp Price $756.25

Heavy Duty Water Pump

For 18RG Celica chassis number RA25 $145.00

For 18RGEU Celica, Carina chassis number RA45, RA83 $180.00

18RG High Performance Engine Bearing Set
(These bearings below will also fits 18R and 16R engines)

High Performance Engine Bearing Set  comes with main bearings, connecting rod and trust washer bearings (the trust bearing is separate, not part of the main bearing) $605.85

Ultra race spec High Performance F770 Metal Bearings with WPC Treatment for friction reduction. Highly recommended for high performance and racing engines.
 "WPC" Molybdenum bearings have a low coefficient of friction, reduce the rotational torque, which also enables the bearing to last longer and hold up to higher pressures.

Over Sizes Available  0.25, 0.50, 0.75, 1.00 Let us know what you require.


NEW!!! 18RG original type (not racing) quality replacement engine bearing set $156.64
comes with main bearings, connecting rod and trust washer bearings.

NEW!!! 18RG Piston Kits (Includes Piston Ring, Pin, Snap Ring)

This full floating type race piston has a compression ration of 11 to1.  The valve recess was designed to handle high performance cams and bigger valves. 
From street class to race use, the piston kit will meet your needs in any application.

18RG Piston Kit 92mm bore $1344.00

18RG Piston Kit 92.5mm bore $1344.00

2200cc Piston specs:

Manufacturing Method     FORGED
Type     High Comp
Bore     92, 92.5
Pin Diameter x Length     22 X 64mm
Pin Height     39.75mm
Piston Ring Thickness     92 1.5 x 1.5 x 2.8mm
Piston Ring Thickness     92.5 1.5 x 1.5 x 3.0mm
Rod Type     18RG Rods
Crankshaft     18RG

18RG Titanium Coated SPL Piston Rings Option
Superior wear by superior materials. Add $152.25 to price of piston kit.


NEW!!! 18RG OEM type Original Piston Ring Set.  $95.00
Available in standard size. .20, .30, .40, and .50 over sized.

18RG piston ring set

18RG Cam Gear Sets
are made from a heavy duty metal and put through the highest standards of machining and heat treatment, all while needing to pass a strict quality controlled inspection.  The slide type has a two degree memory setting to easily and accurately adjust your valve timing.  Replacing the knock pin is unnecessary for this gear, however please be careful not to drop the pin into the motor.  

Two Types Available:

18RG Fully Adjustable Type Cam pulley Set $483.00 pair

13 Hole Type Set For Timing Adjustment $252.00 pair

18RG Performance Cam Shaft Set


Cams for 18RG  $1856 pair.

Available durations and lifts are:

18RG cams

We highly recommends the 292/11.7mm spec.  Makes best overall power for tuned NA engine with good drivability and wide power band. 


18RG Reinforced Tappet Shims

18RG, 2TG Shims,
      camshaft tappets

Available sizes 1.5mm-7.0mm, Price $17.20 each.
Available in 0.05mm increments only.

*The thickness of the shim at the time of shipping is within 0-0.05mm

18RG Custom Cam Grind Service

NEW!!! We also offer our Custom Cam Grind Service.  Send us your good cam cores and we ill grind them to any spec you wish.
Ground to your specification or our suggested cam profile.  Service price is $480.00 for a pair.

18RG Upper Top Chain Tensioner

Upper Top Chain Tensioner  Price $62.54 USD

18RG Timing Chain and Components (OEM type replacements)

Lower Chain Tensioner  $42.86

Chain Guide Bottom

Timing Chain Upper $74.40

Timing Chain Bottom

Timing Cover Seal $17.90

Timing Cover Gasket Set $48.76

Crankshaft Sprocket $28.61

NEW!!! Half Circle Seal $18.00 each.

18RG Metal Head Gaskets.  They are made of multi-layered steel. Available in several thickness. 1.00, 1.2, 1.5, 2.0, 2.5 and 3.0 mm

All headgaskets are 92mm bore size opening.

1.0mm  $325.50
1.2mm  $341.25
1.5mm  $357.00
2.0mm  $399.00
2.5mm  $446.25
3.0mm  $472.50

Type Replacement Headgasket (non metal) $134.55

18RG Oil Pan Gasket Set

18RG Oil Pan Gasket Set $28.30

18RG Bronze Valve Guide Kit

The demands of valve guides are resistance to wear and abrasion, tolerance to high temperature, and seizure. 
This is only accomplished by combining two metals and precision machining of the inside of the guide.  In addition these guides only allow the
minimum valve clearance so that the valves are moving properly during high RPMs. With this type, it is possible to decrease the valve clearance
by a small amount because  of its efficiency at dissipating heat and resistance to sticking valves.

Price $273.00


Size: Intake 51mm / Exhaust 51mm
Material: Phosphorus Bronze

NEW!!! 18RG Titanium Valve Spring Retainers, High Performance Set

 18RG Titanium Spring Retainers

Recommended for stock and upgraded engines. Price $492.80

Stock Retainer Weight 21.6g
Titanium Retainer Weight 10.0g

NEW!!! 18RG 10,000 RPM Dual Valve Spring Set

18RG Racing Springs

Recommended for engines with upgraded high performance camshaft

Price $352.00

18RG High Performance Stainless Steel Big Over Sized Racing Valves
(Not for use with above valve guides unless modified)


Valve stem thickness is 8mm
Not: Must be used with over sized valve guides, spring retainers and keepers.
inquire by email for your application:

Intake size is 48mm
Exhaust is 40.5mm

(8 intake and 8 exhaust)

Generation II Valves $602.12 set.  (good up to about 8,000 RPM)

Sever Duty Valves $784.10 (good up to about 10,000 RPM)

Note: Valves are a custom order and take 4-6 weeks before shipping.

New!!! 18RG Valve Stem Seals

18RG valve

High Temperature Performance Valves Seals, OEM size 
Price $157.50 USD for a set of 8.

Complete Clutch Kit, for 18RG motors. Comes with everything. Clutch, pressure plate, through out bearing,
alignment tool, pilot
bearing and even grease!!  $145.00

18RG Aluminum Lightweight Flywheel  9.5 lb. (4.4 kg.)

New Lower Price!

You will defiantly feel a gain in power with this modification.

15+ Horsepower!

- Frees up horsepower available for acceleration
- Quicker shifts
- Allows easier heel-toe shifting
- Extends transmission synchro life
- Extends engine main bearing life
- Reduces overall vehicle weight


- Has a replacable clutch friction surface so you never have to cut or resurfaced the flywheel
- SFI approved
- Awesome 6061 Aluminum construction
- CNC machined
- Heat-treated special alloy steel friction surface for excellent durability and inexpensive replacement
- Brand new starter ring gear

Aluminum flywheels are made from the highest quality 6061 T6 aluminum. The material is fantastic for strength, heat dissipation and of course reduction in weight. The friction surface we use is an incredibly strong 1050 steel. The plates are milled to meet our high specifications. This flywheel can mate with any type of clutch material, including organic, Kevlar, ceramic, metallic and sintered iron. We attach the friction surface with military grade aerospace fasteners. The ring gears we use are also made from 1050 steel and are heat treated for durability. The gears are heated then pressed on and secured with grade 8 button screws. We were the first to utilize a stepped dowel system in our flywheel. This doweling method ensures that once the pressure plate is installed the dowels cannot be removed because they become locked into place.
Flywheels are designed and builds with extreme precision. We give tuners, racers and builders the high performance and unmatched power they’re seeking.

Replacement Friction Plate Kit - 1045 STEEL The friction surface we use is an incredibly strong 1045 steel.
The plates are milled to meet our high specifications.
Comes with eight button screws grade 8  Increased security helping fasten the ring gear to the flywheel and all other replacement hardware.
With these replaceable plates there is no need to replace the entire flywheel when the clutch
or flywheel is at the end of it’s life, saving time and money.  Price $59.00 USD


NEW!!! 18RG Flywheel Ring Gear. OEM Type

18RG 18RC Flywheel Ring Gear

Ring Gear Outer Diameter=11.588" Inner Diameter 10.206" Pitch=10 Width=.350" Teeth=115 Chamfer=FRONT
115 Teeth

Price $75.02

18RG Intake Manifold Kit

This performance intake manifold was designed with a larger cylinder diameter and made to be used with OER, Weber, Solex, Mikuni and other carburetors. 
The smooth design of the ports allows increased airflow while tuning the carbs is easy with the wire type side linkage kit. 

Price $915.20


Weber DCOE 40mm and 45mm
         Carburetor comes as pictured

The DCOE Side draft carburetors are legends in motor sports history. With countless out standing auto motive applications over the years from standard factory issue carburetors found on cars like Ferrari and other exotics, to full out champion race cars from many decades in all types of racing.

New Lower Price !!! Weber 40 mm DCOE single side draft carburetor $432.00 each.

New Lower Price !!! Weber 45 mm DCOE single side draft carburetor $432.00 each.

18RG Spark Plug Wires

Quality High Performance Wires, 8 mm Thickness

These wires can handle up to 150,000 V

Price $302.50

NEW!!!  18RG Distributor Cap and Rotor Kit.

18RG Distributor Cap and Rotor Kit

Price $36.20

NEW!!!  18RG Distributor

18RG Distributor

Price $170.00


18RG Distributor Ignition Points to Electronic Conversion Kit 

18RG Distributor Ingnition Points to Electronic
              Conversion Kit

Saves gas and extends the life of your spark plugs.  Come with a magnetic pick up you screw inside the distributor. 

This kit eliminates the unreliable points that ware and constantly change the ignition timing.  With this kit you just set it and forget it!!!!  

Its is easier to install than as a set of points but you only do it once!  Entire ignition system fits beneath distributor cap to maintain original look.
No alteration to distributor required. 

You can use a stock ignition coil with this kit but to get the most power from this kit we highly recommend to upgrade to the Flame Thorougher Coil listed below.

Price $136.00

18RG High Performance Ignition Coil

The Flame-Thrower II coils feature a super low resistance.  They will work with just about any high output ignition system.
Low resistance and improved turns ratio help to produce up to 45,000 volts.
This higher voltage enables you to run larger spark plug gaps for added power and better fuel economy.


Price $67.35

18RG Thermostat

Born from racing technology!
71 Degrees Celsius Low Temp Stainless Thermostat

What is the optimum temperature to get the most power from the engine? 

Different parts of the engine are at various coolant temperatures. For example, the temp gauge is reading at 80 degrees Celsius but at the back of the motor, it is between 85 and 90 degrees Celsius, which means it is detonating.  The perfect temperature for optimum performance is the temperature right before detonation, measured at the cylinder.  However, in order to achieve this temperature, it is absolutely necessary to have good cooling efficiency and a low temperature thermostat. The thermostat opens the valve at 71 degrees Celsius and allows the coolant to flow earlier to prevent overheating and bring out the maximum performance from the motor.

Price $89.25



This radiator cap has an upgraded 1.2kg/cm (12 lbs.) pressure valve spring, so that the maximum cooling potential is achieved from the radiator. For example, even though the coolant temperature is climbing over 100 degrees Celsius and the internal pressure of the radiator is high, the coolant will not boil over.

This radiator cap is good protection against overheating because stock will only hold up to 0.9kg/cm ( 8 lbs ) of pressure and the coolant will boil over at 125 degree Celsius.

Price $45.00

<Back to 71-77 Celica page

< Back to Toyhead Auto Home Page