Reinforced valve spring kit Toyota 2GR-FE 2GR-FSE

Toyota and Lexus engine covered

The 2GR is Toyota's 3.5 litre 24-valve V6, sold as the 2GR-FE and the 2GR-FSE. It sits under the bonnet of many Toyota and Lexus models, among them the Camry, Avalon, Highlander, Previa and RAV4, as well as the Lexus ES, GS, IS, RC and RX.

On all 24 valves the kit replaces the original spring, upper retainer and lower spring seat; the factory collets stay. SUPERTECH supplies SPR-EC3025D double springs, an RET-EC3020/T55 titanium upper retainer and an SEAT-F4R-3UR lower spring seat.

SUPERTECH reinforced valve spring kit

When a valve returns late to its seat, sealing suffers and the piston may be brushed. Only a spring carrying enough load holds it against the cam without a pause, even at high engine speed; failing that, valve float appears.

Fitted at 37.8 mm, this double-spring kit develops 276 N (62 lbs) on the seat for a cam lift reaching 13.9 mm.

Valve spring kit technical specification

Valve spring kit fitting details

The SUPERTECH kit SPRK-EC3025D-2GR holds SPR-EC3025D double springs, RET-EC3020/T55 titanium upper retainers and SEAT-F4R-3UR lower spring seats. The original collets remain in place.

Without its height, a load means nothing: for this kit it applies at 37.8 mm, taken at rest from the lower spring seat's base up to the top of the upper retainer. When the head has been machined and the figure grows, the spring's push drops by its rate times each extra millimetre. Next, a table sets the dimension beside the seat load.

Technical guide

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SUPERTECH is a Californian house supplying racing valvetrain components, in business for over three decades. Each series goes through laser, ultrasonic and radiographic checks before delivery, to weed out any internal anomaly before it reaches the customer's workshop.

How to choose

To spin this V6 faster, or to give it a more generous camshaft, the original spring is quickly outpaced. This kit offers 276 N on the seat and accepts 13.9 mm of lift: check that yours stays below that before buying. Too much load brings nothing and speeds up cam wear; choose the level your camshaft demands, keep a margin on lift, and set your camshaft lift against the limit of the kit. The coils of this kit go solid at a height of 21.8 mm, and the stated maximum net lift is 13.9 mm.

When reinforced springs become necessary

• Camshaft whose lift goes beyond the standard one
• Rev ceiling lifted by the tuner
• Frequent track days or racing
• Forced induction added to this V6
• Original springs tired by time and mileage

Compatible vehicles

OEM part number (valve spring): 90501-36007, 90501-33027, 90501-A0050, 90501-A0128 (2GR-FE) ; 90501-35046, 90501-34015, 90501-33022, 90501-34H00 (2GR-FSE)

Related products

Head open? Inspect the inlet valves as well. The button below leads to the reinforced inlet valves page for the 2GR: