scooby1982

iTrader: (4)

Hi has anyone on here removed the hydraulic lifters from a face lift model scoob, i have a 98 plate model and have taken the top bit off but am left with the cup in the bottom of the head and wanted to know if anyone knows how to remove it or has a diagram on how to remove them?

merlin24

iTrader: (1)

MY'98 shouldn't have Hydraulic lifters (provided the right heads are fitted) - will either be Outer shim for UK/WRX or Inner Shim for STi.

The bit you have taken off - is it a flat disc approx 2mm+ thick - if so, that is the shim.
The bucket should slide/twist out of the cylinder head (if not seized in place).

Exploded view of Hydraulic Lifter below:







Mick

malcs scooby

iTrader: (5)

x2 what merlin24 said

scooby1982

iTrader: (4)

These are not the same as the ones that are in my car( the bucket at the right hand side of the pic is virtually half the size of this), i think that someone has changed the heads at some point, mine are much smaller than these, i cant post a pic because i cant remove it from the car, that is what am wanting to know, is how to remove them from my car???

merlin24

iTrader: (1)

If the cam covers have '4 Cam 16 Valve' on them with a square'ish spark plug access hole, then they are Hydraulic heads.
Cam covers without the 4 Cam logo and an oval spark plug hole would be Inner or Outer shim type heads.

If the bucket is tight in the lifter bore of the head, then they are a bugger to do if the engine is still in the car due to restricted access.
A pair of swan necked plier's or a small pair of mole-grips will normally get them out but you can damage the bucket in the process.

If you are removing the heads to change the head gaskets, then you can leave the buckets in place until the head(s) are off - then tackle the job of getting them out.

Pic below of some of the shim types found on the Impreza:




Left to Right :
STi V2 RA Top Hat Inner, STi Version 3~6 Inner Shim, JDM Small Outer Shim,
UK'99/WRX Outer Shim, New Age Selective Bucket.


Mick

scooby1982

iTrader: (4)

It has the oval rockers on it so must be outer or inner, how do i tell please? also me and my dad are still trying to remove the last bit what is inbedded in the head and it just wont budge at all, the heads are out of the car also any advice on this please and thanks for your help so far.

scooby1982

iTrader: (4)

This is what mine looks like when i removed it, excluding the bucket, that is still left in the head atm,

merlin24

iTrader: (1)

Is your Impreza a SOHC (single over head cam) non turbo by any chance ??

Mick

scooby1982

iTrader: (4)

No mate is a quad cam 16 vavle turbo my98 uk 2000

scooby1982

iTrader: (4)

Anyone else have any ideas as this is starting to do my head in, as i need to know the part etc so that i can order another one

merlin24

iTrader: (1)

Got any pictures of the cylinder head and jammed lifter so people can identify what heads you have got fitted - you dont normally find a hydraulic valvetrain (as in the picture you posted) head fitted to an Impreza after Version 2 unless someone has fitted an early Legacy engine/heads.
Have you got the rest of the lifters out or is this the first one you are trying to get out ?

Mick

scooby1982

iTrader: (4)

Just after taking this one out mate and its just the bucket what is left stuck i the head atm, here is apic of the heads mate, someone who i rang the other dy seems to think that they are early legacy heads as you suggested in your previous pos

merlin24

iTrader: (1)

Yep - they are Legacy heads (2 bolts for the coil packs) and hydraulic lifters.

Are you sure the sleeve comes out as it seems to me you remove the retaining ring to take the lash
adjuster out but the sleeve stays in place ??

You could try one of the Legacy's forums if no one else on here has any other idea's.





Poor picture but all i can find.

Mick

scooby1982

iTrader: (4)

Thanks for the verification mick, will these heads loose me any power compared to the ones that should be fitted to the my98 do you know thanks lee.