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Reinforced inlet valves TOYOTA 20R

€121.69 (tax incl.)

€152.11 (tax incl.) -20%

Set of 4 reinforced inlet valves for TOYOTA 20R (Celica, Corona, Hilux).

Brand: FERREA
Engine: 20R (2.2 8V)
Dimensions: 45 mm head, 8 mm stem
Material: stainless steel, chromed stem

F1436P*4

Choose Brand - Material - Number(s) of Groove(s) :: FERREA - Competition Plus

Choice Dimension :: ORIGINAL

For larger quantities, 5 to 15 days lead time

TOYOTA engines covered

Introduced in 1974, the 20R is Toyota's 2.2 litre petrol unit: four cylinders in line, 8 valves, a single overhead camshaft and 91 to 98 hp. It appears in the Celica, Corona and Hilux built until 1980.

Its cylinder head carries 4 inlet valves, one for each cylinder, Toyota part number 13711-38010, with a 7.97 to 7.99 mm stem and 90913-03005 collets. These production parts do not take kindly to a wilder cam, firmer springs, higher revs or added forced induction.

FERREA reinforced inlet valves

Each inlet valve controls the incoming air by lifting over and over each second at high engine speed. Its head hits the seat whenever it closes, while the stem keeps sliding through the guide. Across 400 to 550 °C the chrome-silicon steel used originally drops from 500 MPa at 500 °C to 250 MPa at 600 °C: half of its strength, i.e. 50 %, is gone. More lift, rpm or pressure worsens this wear.

FERREA produces them in its Competition Plus range: stainless body, chrome-plated stem. For this range the maker quotes 20 % more resistance to high temperature and to fatigue, plus 25 % longer seat life. The hard chrome layer on the stem reduces rubbing and wear against the guide.

This valve keeps a 45 mm head diameter, with an 8 mm stem and a 115.4 mm length. It fits the cylinder head without enlarging the inlet seats, which stay at their size.

Inlet valve technical specification

Part number	Brand	Size	Head Ø	Stem Ø OEM 7.97 to 7.99 mm	Length	Grooves	Material
F1436P*4	FERREA	Standard	45 mm	8 mm	115.4 mm		Stainless steel, chromed stem

F1436P*4: set of 4 valves, 4.6 mm stem end.

Fitting details

Part	TOYOTA original	Reinforced
Collets	90913-03005
Valve stem seals	90913-02023 / 90913-02024
Valve guide

The 45 mm head sits on inlet seats at their size; a simple check cut goes with the cylinder head rebuild.

On the 20R the clearance is set by screws on the rocker arms, 0.2 mm hot on the inlet side: once the valves are in, check this clearance and correct it.

Technical guide

The brand offered

Founded in Florida in 1978 by two tuners born in Argentina, FERREA Racing Components keeps all of its manufacturing in house. Its single-piece valves come from a forged bar, are machined entirely by CNC, and are raced in NASCAR, at the drag strip and on circuits.

How to choose

The 20R has just one part in its listing: its head and range are enough to show which cylinder head it goes on and what step it brings over the original.

Criterion	Option offered
Size	45 mm head Head diameter unchanged, 8 mm stem: fits seats at their size, with no widening of the opening or port work.
Range	Competition Plus Stainless steel and chromed stem: better endurance when hot, longer-lasting seat, stem less prone to rubbing in the guide.

When reinforced valves become necessary

High-lift cam or harder springs fitted
Rev ceiling pushed up
Turbo or positive displacement supercharger added
Head rebuilt for racing, rally or off-road
Factory valves damaged, worn or reground several times

Compatible vehicles

Model	Engine code	Power	Years
Celica (A2) 2.2	20R	98 hp	1974-1977
Corona (T13) 2.2	20R	98 hp	1978-1980
Corona (RT1) 2.2	20R	98 hp	1974-1979
Corona (RT118) 2.2	20R	98 hp	1974-1977
Hilux II (N2) 2.2	20R	98 hp	1974-1978
Celica (A4) 2.2	20R	98 hp	1977-1980
Hilux III (N3, N4) 2.2	20R	97 hp	1978-1980
Corona (RT119) 2.2	20R	91 hp	1977-1978
Corona (T1) 2.2	20R	91 hp	1978-1980
Corona (XT) 2.2	20R	91 hp	1978-1980
Corona 2.2	20R	98 hp	1974-1978