how would you know???sti version 4 heads
28 June 2008, 10:00 AM
#1
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
how would you know???sti version 4 heads
just wondering if anyone knows how i can tell when buying real sti version 4 head 
is there a number ect any help will be great 
is there a number ect any help will be great
28 June 2008, 10:33 AM
#4
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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
Trending Topics
29 June 2008, 03:31 PM
#8
Scooby Regular
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.
11 July 2008, 08:54 AM
#11
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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
11 July 2008, 09:45 AM
#13
Former Sponsor
iTrader: (4)
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes
on
2 Posts
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
Simon
[/IMG]
11 July 2008, 04:06 PM
#18
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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 i have a checked the cam on my 97 uk and they only have one line on the cam 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 so confused 
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 is the rs head like the wrx or sti my heads gone now so hope someone can shed some light on this subject 
i have a checked the cam on my 97 uk and they only have one line on the cam 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 so confused 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 is the rs head like the wrx or sti my heads gone now so hope someone can shed some light on this subject
11 July 2008, 05:06 PM
#20
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.
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.
11 July 2008, 05:48 PM
#21
Scooby Senior
Join Date: Feb 2003
Location: West Midlands
Posts: 1,903
Likes: 0
Received 0 Likes
on
0 Posts
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
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
12 July 2008, 04:55 PM
#22
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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
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
i have put in a pay pal claim and asked for a re-fund ,just hope that i can get my money back
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 just gutted now
12 July 2008, 08:34 PM
#23
Scooby Senior
Join Date: Feb 2003
Location: West Midlands
Posts: 1,903
Likes: 0
Received 0 Likes
on
0 Posts
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
13 July 2008, 11:06 AM
#24
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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
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
lets hope i get it back quick thanks lee
13 July 2008, 03:08 PM
#25
Scooby Regular
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.
13 July 2008, 07:32 PM
#26
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.
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
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
13 July 2008, 07:35 PM
#27
Former Sponsor
iTrader: (4)
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes
on
2 Posts
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.
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.
13 July 2008, 10:26 PM
#28
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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.
14 July 2008, 12:26 AM
#29
Scooby Regular
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.
14 July 2008, 03:41 PM
#30
Scooby Senior
Thread Starter
iTrader: (12)
Join Date: Apr 2006
Location: south wales rhondda
Posts: 4,067
Likes: 0
Received 0 Likes
on
0 Posts
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.