Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart. There is 1 item in your cart.
Total products
Total shipping To be determined
Total
TOYOTA - Reinforced Engine Parts
Manufacturers
TOYOTA - Reinforced Engine Parts
View larger Warning: Last items in stock!
New product
Set of 8 reinforced inlet valves for TOYOTA 4A-GE 16V.
The 4A-GE is Toyota's 1.6 litre, 16-valve, double overhead camshaft inline four-cylinder engine. In its 16-valve version it powered from 1983 to 1994 the Corolla AE86, the AE82 and AE92 Corolla, Sprinter and Levin, the Celica AA63, the Carina AT171 and the Conquest, from 116 to 140 hp.
It has 8 inlet valves, two per cylinder. The basis of countless builds, on circuit, rally stages or drift, it puts its valves through more revs, lift and heat than at the factory.
The inlet valve opens to let air in, closes against its seat and slides in its guide, dozens of times per second at high rpm. It runs between 400 and 550 °C, where a common chrome-silicon steel drops to 500 MPa at 500 °C and then 250 MPa at 600 °C, i.e. 50 % of its strength lost.
The SUPERTECH valves offered have a black nitrided stem, harder and slicker, which reduces wear in the guide, a head relieved under the seat for better airflow, and a single groove.
The +1.5 mm oversize takes the head from 30.5 to 32 mm, with stem and length unchanged: the passage at the seat widens, the cylinder fills better and the engine gains power, provided the cylinder head seats are cut to this diameter.
| Part number | Brand | Size | Head Ø | Stem Ø | Length | Grooves | Material |
|---|---|---|---|---|---|---|---|
| TIVN-1019-8 | SUPERTECH | Standard | 30.5 mm | 6 mm | 99.6 mm | 1 | Black nitrided stainless |
| TIVN-1020-8 | SUPERTECH | +1.5 mm | 32 mm | 6 mm | 99.6 mm | 1 | Black nitrided stainless |
| Part | TOYOTA original | Reinforced |
|---|---|---|
| Valve collets | 90913-03021 | KPR-6T-ST-32 |
| Valve stem seals | 90913-02066 / 90913-02062 / 90913-02077 / 90913-02079 / 90913-02090 | |
| Valve guide |
The number of grooves on the valve and on the collets must match: these single-groove valves are fitted with KPR-6T-ST collets.
The +1.5 mm oversize requires cylinder head seats cut to the diameter of the new head.
 | SUPERTECH, in San Jose, California, has been developing competition valves, springs and pistons for more than 30 years. Each valve is designed for its engine, checked by ultrasound, X-ray and laser, then validated by engine builders, from circuit racing to drifting. |
Both references have 1 groove; the choice is about the size, that is the head diameter.
| Criterion | Option 1 | Option 2 |
|---|---|---|
| Size | Standard size 30.5 mm head, for a cylinder head whose inlet seats have not been reworked. | +1.5 mm oversize 32 mm head: wider passage at the seat and better filling. Seats to be cut to the new size; also makes up for seats already ground. |
| Model | Engine code | Power | Years |
|---|---|---|---|
| Corolla GT 16V, GTi Twin Cam (AE86) | 4A-GE | 124-131 hp | 1983-1987 |
| Sprinter GTi (AE82) | 4A-GE | 131 hp | 1983-1987 |
| Celica (AA63) | 4A-GE | 124 hp | 1983-1985 |
| Corolla (AE92) | 4A-GE | 116 hp | 1987-1994 |
| Corolla Coupé (AE92) | 4A-GE | 117-136 hp | 1987-1992 |
| Corolla Liftback GTi (AE92) | 4A-GE | 125 hp | 1987-1993 |
| Corolla Compact GTi (AE92, AE93) | 4A-GE | 116 hp | 1987-1994 |
| Corolla Levin (AE92) | 4A-GE | 140 hp | 1989-1991 |
| Carina V (AT171) | 4A-GE | 120-140 hp | 1988-1992 |
| Conquest RSi (E90) | 4A-GE | 121 hp | 1988-1993 |
OEM part number (inlet valve): 13711-16010; 13711-16020
A rebuilt 16-valve 4A-GE cylinder head also takes new exhaust valves, reinforced versions available here:
| TOYOTA 4A-GE 16v exhaust valves → |
