The Gen2 "LE2" Cruze comes with very light valve springs from the factory. Whenever you bump the rev limiter and/or boost the valve springs will start to float. This is bad for a few different reasons, it is hard on the valves/valve seats themselves, and it reduces power because the valves are not opening and closing properly like they should. When you install our ZZP valve springs, you will be able to rev the car out further and make power power at the top of the rev range. The stock valve springs are measured at 51# and these are 75#.
This item comes in four different configurations:
-Valve Springs only
-Valve Springs & Titanium Retainers
-Valve Springs, Titanium Retainers, and our tool kit
-Valve Springs and our tool kit
About our Titanium Retainers:
In out quest for continually pushing the platform, we found ourselves at the point where even with our upgraded springs, we were fighting valve float at high boost and lift levels. After researching the issue, we found that the reused stock retainer is a significant portion of the valve/retainer/keeper assembly's mass. As ZZP does, we immediately began working on the solution.
These Titanium retainers are made to directly replace the stock retainers on our upgraded LE2 valve springs, and reduce reciprocating mass by as much as 33% (stock retainer 6g, ZZP Ti retainer 4g). This results in a significant improvement in valvetrain stability and a much larger window before valve float occurs.
We recommend installation be performed with our LE2 valve spring tool kit, which can be found here.
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