ScoobyNet.com - Subaru Enthusiast Forum - Head Identification help

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Mark A

20 July 2004 08:36 PM

Head Identification help

Please can anybody able to tell me how I can identify STi version 2 & 3 heads. The heads are off the car with no cam covers.

Mark A

Mark A

21 July 2004 01:54 PM

Anybody ?

Bats-Wrx

21 July 2004 07:35 PM

I needed to know this a while ago. iirc it was to measure the cams profile.

Big Bear

21 July 2004 07:40 PM

STI 2 heads are hydraulic lifters and the 3's are solid lifters with shims

Mark A

22 July 2004 10:14 AM

How can I tell if they are hydraulic lifters ?

Can you compress them ?

Mark A

Dyney

22 July 2004 06:38 PM

If they are Hydraulic there will be a gap between the follower and the camshaft (I think)
Non-hydraulic lifters are shimmed, so no gap :)

If you take a follower out it will have a groove around the middle if it's hydraulic

Mark A

22 July 2004 08:20 PM

Quote:

Originally Posted by Dyney

If they are Hydraulic there will be a gap between the follower and the camshaft (I think)
Non-hydraulic lifters are shimmed, so no gap

:)

No, says it's not true

ticky

22 July 2004 08:24 PM

How do you measure the cam profile?

Big Bear

22 July 2004 09:16 PM

Also around the plug area the version 2 is shaped like a head with horns , the version 3 has a diamond shaped are . Hydraulic lifters have a hole in the sides to allow oil into the lifter

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