how would you know???sti version 4 heads
 

just wondering if anyone knows how i can tell when buying real sti version 4 head :wonder: is there a number ect :wonder: :wonder: any help will be great :thumb:

Head Codes are LH-B + RH-B
Valves are EH + IH
56mm White coded Valve Springs
Inner Shim Buckets
L4 + R4 Cams

Mick

thanks fella :thumb:

dose anyone know what the v3 are as i have been told i can use v3 or v4 sti heads so if anyone knows the version 3 heads that would be great too thanks :thumb:

STi V3 and V4 heads are the same - same spec as listed above.

Mick

my heads are a gold colour and is not like some has sprayed them looks factory? that mean anything just curious

In a nutshell - No - just the original lacquer on the heads.

Mick

Mick is the master of STi3/4 head ID. The only other thing (which I think he told me about as well) is there will be a line cast through the L or R on the cam. Having now seen eight different STi3/4 cams myself, this is definitely another clue. I have a set of standard WRX v4 cams and they do not have this extra line.

Sample pic of STi vers.3/4 Cams

Attachment 49966

Mick

There you go, the grand master strikes again.

thanks for the info guys but im in a bit of a muddle now as i have looked at the heads and the cams have the extra line but the shims look as if they are on top of the buckets so will try and get pics up asap :thumb:

check the shims under the buckets
pics here

unbolt a cam and remove a bucket.. if it has a groove and a hole in it then it is hydraulic and therefore early uk/wrx not sti, if the shim is on top of the bucket then they are uk or wrx.. 97/98 heads

Simon

shim is on top of the bucket :cry: ive been done:cry: not sure on the cam tho what do you think:wonder:
[IMG]http://i81.photobucket.com/albums/j2...2/heads003.jpg[/IMG]

97/98 uk or wrx.. cams are fairly good though

yes but i already have a set as my car is 1997 :wonder:

i thought vver 3 cams are totaly diffrent to v4???

im so confused about these heads now as the cams have the extra line on them same as the sti cams but they havent got the under bucket shims :wonder: i have a checked the cam on my 97 uk and they only have one line on the cam :wonder: and are shims on top so could it be the person i had these off put the sti cams on wrx heads to pas them off as sti :wonder: :wonder: so confused :brickwall :brickwall i also have a set of american rs heads off a 1998 model which are the same as the sti ones that i thought i had bought which got the 2 lines on the cam and have the shims on the top of the buckets :wonder: :wonder: is the rs head like the wrx or sti :wonder: my heads gone now so hope someone can shed some light on this subject :freak3: :freak3: :brickwall :D

are they not 97/98wrx cams?

they come with 276bhp as stock so they might have the better cams in them, but not the heads?

I was of the opinion that 97/98 heads either standard or STI had all the same castings, but STI heads were ported a little more for better flow.

The cams are different sti being more aggressive than standard cams.

The shims on STI heads are under buckets and over buckets on standard. This allows for higher revs without spitting out a shim.

I have pictures of sti v4 heads & the shim sits inside the bucket & not on top.


http://i302.photobucket.com/albums/n...Photo-0102.jpg


Hopefully you can contact the seller & request a refund?

If you need some more pictures pm me.

Ticky

thanks fella :thumb: i have put in a pay pal claim and asked for a re-fund ,just hope that i can get my money back:cry: wish i held out that bit longer to see if you would have got back to me as i would have had yours off you :cry: just gutted now

No Worries.
I was pretty stressed myself that weekend. Having finished fitting the engine at midnight it only had to come back out due to some weird noises. So back on the job in the morning, discovered that the cover plate which is fitted to the rear bottom of the block was bent up & caught on the clutch cover?
Eventually got it fixed but by then I was too tired to start stripping the other engine.
Anyway the stiv4 heads are still available & I hope you do get your money back. Its more than likely I will have them for some time.

Good Luck
Ticky

thanks fella just hope i get my money now and will be able to have these off you but that depends on if i get my money back :brickwall lets hope i get it back quick thanks lee

Looks like you may have a set of STi3/4 cams there even if the rest of the valvetrain is standard WRX. Do you have the IH/EH valves? Depends how much the whole lot cost you, but might be worth hanging onto the cams if they are proper STi (which they look like from the lines). Get a set of measuring calipers and work out the lift on them. I've had two sets of STi3/4 through my hands as well as a standard WRX3/4 set so I know the measurements and signs and it's exactly as Merlin (Mick) says.

As silent running said above - if the valve codes do not match up,then someone has just fitted STi 3/4 cams to the UK/WRX heads - you do run a risk of flicking a shim out of the bucket at high rpm due to the higher lift of the STi cams.

Attachment 49969

From Left to Right:
STi Ver.2 RA Top Hat Inner Shim
STi Ver.3/4 Inner Shim
UK/WRX Outer Shim 1997/8
UK/WRX/Twin Turbo Outer Shim 1998/02
STi/WRX/UK Selective Bucket


Mick

the head casings are the same, no extra porting on sti as standard

i do have the ih /eh valves on them so can anyone make any sence of that :wonder: :wonder:

The cams show the signs of being STi. Once you measure them you will be certain. The valves are definitely STi - the exhaust ones are sodium filled. Your tappets and shims are WRX. Whether your valve springs are or not, you may not be able to tell just by colour, but might have to get them out and measure their free length.

when i got five mins i will have a go :D