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-G,  18R-GU, 18R-GR, 18R-GEU

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




 Main Bearings, Sandard Size (Production Years 1968 - 1977).  $173.25
Main Bearings, Over Sized 0.25, 0.50, 0.75, 1.00 Available (Production Years 1968 - 1977). $183.75

Connecting Rod Bearings, Sandard Size(Production Years 1968 - 1977). $110.25
Connecting Rod Bearings, Over Sized 0.25, 0.50, 0.75, 1.00 Available (Production Years 1968 - 1977).  $131.25

Camshaft Bearings Sandard Size (Production Years 1968 - 1977). $68.25
Camshaft Bearings Over Sized 0.25, 0.50  Available (Production Years 1968 - 1977). $78.25

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Main Bearings Sandard Size (Production Years 1972 - 1983). $141.75
Main Bearings Over Sized 0.25, 0.50, 0.75, 1.00 Available (Production Years 1972 - 1983). $162.75

Crankshaft Thrust Bearings, Sandard Size (Production Years 1972 - 1983).  $42.00
Crankshaft Thrust Bearings, Over Sized  0.25, 0.50  Available (Production Years 1972 - 1983). $42.00

Connecting Rod Bearings, Sandard Size (Production Years 1972 - 1983). $110.25
Connecting Rod Bearings, Over Sized 0.25, 0.50, 0.75, 1.00 Available (Production Years 1972 - 1983).  $131.25

Camshaft Bearings Sandard Size (Production Years 1972 - 1983). $68.25
 Camshaft Bearings Over Sized 0.25, 0.50  Available (Production Years 1972 - 1983). $78.75

Also available are ultra race spec "WPC" Molybdenum bearings. Please contact us for more information.
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 $417.90 pair

13 Hole Type Set For Timing Adjustment $196.35 pair


18RG Performance Cam Shaft Set (very limited quantity in stock)

     
The best part about these cam are they have multiple holes for proper cam timing. No need for adjustable sprockets!

New 288 (10.5 mm lift) Cams for 18RG  $978.00 pair.

New Blank Cams for 18RG $978.00 pair
Custom Grind Service for blank cams above. Ground to your specification or our suggested cam profile.  Add $84.00 per cam or $168.00 for a pair.

Cam Combination Tips, You can use the cams for either intake or exhaust. For wide open top end performance we usually use bigger duration on the intake,
304 (custom grind) intake with 288 exhaust . Or 288 intake and 272 (custom grind) exhaust, for more bottom to mid range RPM power.  You can use same duration too, like 288 for both intake and exhaust for more of a mid range to upper rpm power.



18RG Timing Chain and Components (OEM type replacements)

Upper Top Chain Tensioner $67.22
Lower Chain Tensioner  $21.67

Upper Chain Guide $82.58
Chain Guide Bottom $17.04

Timing Chain Top $55.76
Timing Chain Bottom $36.75

Timing Cover Seal $17.90
Timing Cover Gasket Set $24.74

Crankshaft Sprocket $28.61


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  $266.70
1.2mm  $279.30
1.5mm  $290.85
2.0mm  $327.60
2.5mm  $364.35
3.0mm  $388.50

18RG OEM Type Replacement Headgasket (non metal) $41.33

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 $235.20

Specification:

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

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




Specs.

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

Intake size is 48mm
Exhaust is 40.5mm


$340.00 set (4 intake and 4 exhaust)

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

18RG

Engine Oil Pan Gasket $27.10


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



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

Features:
- 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.


New Lower Price!  Price $450.00


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 $631.05

18RG Spark Plug Wires



Quality High Performance Wires, 8 mm Thickness

These wires can handle up to 150,000 V

Price $232.00

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
PERFORMANCE RADIATOR CAP

 


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





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