Enginerd

I read somewhere (can't remember exactly) that 02+ WRX engines have solid lifters. If this is true, I imagine they need periodic adjustment. How often should this be done? 30k? 60k?

cnstman

does an dohc engine even have lifters? i thought the cam lobes are in contact with the valves. maybe i have it all wrong??

cnstman

Mulder

Yes there are solid lifters. The factory service manual does not specify a service interval for them although it does describe the procedure to check and adjust clearance. I have heard the first inspection for the valves is supposed to be at 100K although I don't have documentation on that.

Wingless Wonder

iTrader: (7)

Originally posted by cnstman
does an dohc engine even have lifters? i thought the cam lobes are in contact with the valves.

There is a small lifter with a thin shim to adjust clearance. Shims are available to adjust a range of clearances. The procedure looks pretty straightforward as long as you have enough room to work. The service manual specifies a shim replacer tool.

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"…axles of evil…" - George W. Bush

cnstman

thanks for the description of the system.

cnstman

Enginerd

Thanks to everyone who replied. I asked because on very cold mornings (5-10F) I can hear a little valve clatter for ~30sec after startup. I guess that is something I should expect with solid lifters.