upgrading valve springs

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Jan 25, 2015 | 12:01 PM

#11

Bullwings

Joined: Aug 2010

Posts: 5,102

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Quote:

Originally Posted by Apex1.0

Supercharged cars are using springs to reduce intake valve float. I don't see why you would need them with stock cams and no blower.

Not to hijack, but with AP1s, if I check the retainers and they are good (not walking) should I upgrade anyway?

At the very least you should upgrade to AP2 valve springs and retainers.

My car is mostly stock, and while the OEM stuff is fine and will totally do. I upgraded to the SuperTech stuff since the car was seeing a relatively decent amount of track use.

The other thing was for over-rev peace of mind due to driver error. I think the SuperTech Ti valve train is good for 10K+ RPMs - so that was my main reason for doing it. I'm just going to send in oil samples every second or third oil change and see what happens.

Right now, 5ppm of Ti is nothing - especially considering i've had them on my car for about 30K miles and around 20+ track days.