These are a MUST for the Toyota G16E-GTS engine. Rev with peace of mind! ✌️
Drop in replacements for hydraulic lash adjusters (13750-70020) that include a retaining groove for a clip to attach to the rocker. This adds a security mechanism if the rocker looses spring pressure due to a valve float/bounce/stick situation.
When the G16E-GTS first came out, we inspected the valvetrain and knew it would be a weak point. The rockers are floating and we had experienced failures with a similar rocker setup in the FA20 engines in the Toyota 86 (which we have subsequently made a fix for). With the buzz around the GR Yaris, we started development on our rocker retainer solution, specific to the G16E-GTS engine.
The best solutions are simple. It's a clip that attaches to the rocker and a groove in the hydraulic lash adjuster that 'catches' the rocker if the valve spring loses pressure for a split-second, due to a valve float situation.
If you haven't seen this solution before, it's actually quite common. More expensive performance engines such as the B58 BMW engine in the Supra and Lexus' flagship 2UR-GSE 5.0-litre V8 in the LC500 and RC F run rocker retainers. It's important to know that this is not a fix for valve float, instead, it adds a security mechanism to reduce the chance of a rocker dislodging if the valve spring loses pressure for a split-second, due to a valve float situation.
It's a no-brainer preventive measure when building a high performance engine. These should be stock on every engine Toyota makes.
Vehicle: Toyota
Model: Yaris GR (XP210), Corolla GR (GZEA14)
Engine: G16E-GTS
Year: 2020-Present
Key Features:
- OEM Drop-in
- Prevent a costly rebuild
- Rev with peace of mind
Included:
- 12x Denstoj Rocker Retainer Hydraulic Lash Adjusters
- 12x Denstoj Rocker Retainers Clips
Technical Specifications:
- Denstoj Rocker Retainer Hydraulic Lash Adjusters: Billet alloy steel and heat treated
- Denstoj Rocker Retainers Clips: High carbon steel and heat treated
Who is running them?
Fensport Performance, Outfront Motorsports, GR Performance Parts, 4turbo, Off The Line Performance, Limit +1, Emirates Motorsports, Nemtec Racing
See them in action!
Shipping
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FAQ
Q: Why would I install these?
A: To stop a rocker arm dislodging and destroying your engine under a valve float/bounce/stick situation.
Q: How likely is this to occur?
A: It's difficult to predict engine reliability, as no engine is flawless, especially the highly strung 3 banga in your GR Yaris/Corolla. For instance, oiling issues may not affect every user, but they are a potential concern when you're modifying your engine to increase power. Naturally, the more you enhance the power and drive spiritedly, especially at higher RPMs, the greater the risk of engine component failure, such as a rocker dropping. By installing our kit, you're adding an extra layer of reliability and peace of mind to your engine.
Q: Does these work with the OEM rockers?
A: Yes. There is no change to the rocker arms.
Q: Are they compatible with Kelford springs and camshafts?
A: Yes. They are drop-in replacements for the OEM hydraulic lash adjusters and work with both the OEM springs and camshafts and aftermarket ones such as Kelford and GSC. A great time to install them is when you're already going other valvetrain work.
Q: Do you also recommend upgrading the valve springs?
A: If you’re raising the rev-limit above the factory specification or increasing boost pressure, yes, we also recommend upgrading the valve springs. However, if you’re planning to keep it mainly stock, you’re better of using the original valve springs. This is so that you’re not adding unnecessary load into the valve train.
Q: Can I install your rocker retainers without removing the camshafts?
A: It's possible and we've done it but we'd recommend dropping the timing. It's easier.
Q: To install your rocker retainers, how long does it take and does the whole engine have to come out ?
Q: Will these handle 600+ horsepower?