96 STI CYLINDER HEADS
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16 February 2005, 11:47 PM
#20
Bit of a hi-jack.
What's better with the STi heads above the WRX heads ( both jap imports here I mean ) ? ( Feel free Pavlo! )
Bigger valves, different cam profiles, stronger valve springs, better airflowing?
Just wondering in case more come up and are a worthwhile buy!
What's better with the STi heads above the WRX heads ( both jap imports here I mean ) ? ( Feel free Pavlo! )
Bigger valves, different cam profiles, stronger valve springs, better airflowing?
Just wondering in case more come up and are a worthwhile buy!
17 February 2005, 01:09 PM
#21
my scooby-sense led me to this thread...
the sti heads have sodium filled exhaust valves, and hollow inlet valves, under bucket cam follower shimming, and run with different cams.
Paul
the sti heads have sodium filled exhaust valves, and hollow inlet valves, under bucket cam follower shimming, and run with different cams.
Paul
17 February 2005, 07:53 PM
#22
Cheers Paul, thought your scooby-sense would be tingling!
So as STi always seems to be, built for more reliability / higher revving, as valve construction shows, ( cooler running exhaust valves, lighter inlet valves ) are the cams higher lift or longer duration etc, or just suited to higher revving motor?
Any benefit on a WRX 7000 rpm limit engine?
Cheers
Neil
So as STi always seems to be, built for more reliability / higher revving, as valve construction shows, ( cooler running exhaust valves, lighter inlet valves ) are the cams higher lift or longer duration etc, or just suited to higher revving motor?
Any benefit on a WRX 7000 rpm limit engine?
Cheers
Neil
17 February 2005, 11:22 PM
#23
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mmm interested in this discussion!
I am looking for heads to fit on my US 2.5 STi short motor!
The car it will be fitted in is a MY99 STi 5 Type R is there any particular heads I should be looking for or will any STi heads be suitable?
What about the heads from a blob eye STi - any pitfalls to using them?
Is there some sort of electronic control of the valves on them for which the STi 5 is not wired?
appreciate any pointers!
thanks
Ken
I am looking for heads to fit on my US 2.5 STi short motor!
The car it will be fitted in is a MY99 STi 5 Type R is there any particular heads I should be looking for or will any STi heads be suitable?
What about the heads from a blob eye STi - any pitfalls to using them?
Is there some sort of electronic control of the valves on them for which the STi 5 is not wired?
appreciate any pointers!
thanks
Ken
18 February 2005, 12:28 PM
#24
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Ken from what i have read on NASIOC there should be any problems fitting on your
short block VER 7 + heads but you will not be able to use the AVCS without
VER 7 + ECU + new wiring
and from what i read the JDM as higher ver heads you get
the more ported and bigger heads they are so higher version should be better
:-)
if you need help finding 7 or 8 i think i can help you
:-)
short block VER 7 + heads but you will not be able to use the AVCS without
VER 7 + ECU + new wiring
and from what i read the JDM as higher ver heads you get
the more ported and bigger heads they are so higher version should be better
:-)
if you need help finding 7 or 8 i think i can help you
:-)
19 March 2005, 08:19 AM
#28
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Alan, you mean the rocker covers mate?
Got loads in my garage. Can have them if you want give me a bell 07740047043 and can arrange meet up if needed? Work in Hull and Middlesbrough.
Got loads in my garage. Can have them if you want give me a bell 07740047043 and can arrange meet up if needed? Work in Hull and Middlesbrough.
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