Source a set of 04/05 wrx heads they are shimless buckets and big port unlike the gc or gd sti can easyily delete avcs if not required or hook it up to ecu and use it to ur advantage

using the Perth-WRX mobile app

I just got offered a set of heads from a 04 WRX today from a work colleague.
Do you know if these flow just as good as the V6 STi heads?

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!

Pic of the heads attached if you can confirm they are the big port heads.

Attached Thumbnails

       

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!

Ask one of these performance shops to split your block and check all the clearances etc and put it back together, then move on to the heads etc.

Yes it will suck paying for it twice but that should be enough piece of mind for them to move forward with the build.

Did the engine builder send you the clearance numbers with the block. I was told that is how I will receive my block when it gets here, sometime this millennium....

Who is the engine builder? PM me if you don't want to go public.

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Bye bye betty blue. Hello F6.

Yep gd wrx big ports refer to rosscos build he used same same in version 6

using the Perth-WRX mobile app

Haha spent an hour reading it last night

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!

Well, got the heads. They are in very good condition. Will be sent off for rebuild next week.
Also gave the covers a paintjob in ceramic paint. I recon these will set the engine off quite well in the engine bay.

Not sure if its worth fitting oversized valves or not. I am aiming for 250 - 280kw on pump fuel on a 2.1L. Any suggestions?

Attached Thumbnails

 

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!

That paint-job looks really clear mate!

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Now handles like a cat on carpet

I inspected my v6 heads today and 3 out of the 4 spark plugs holes have hair line cracks around them.

My kelford non Avcs 272 cams/springs/retainers are due to arrive on Tuesday. I think I'll be goin down the same road as VUSSUTE.

Question: Will I be able to run the non Avcs cams/springs/retainers in the 04wrx heads given they are shimless buckets?

I also have 1mm oversize ferrea valves to suit my v6 heads. Will I be able to whack them into the 04 wrx heads?


Sent from my iPhone using Tapatalk

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STi Version VI

Is this a problem with just the STI heads, or also for WRX heads?

And is it just the 99/00 heads that suffer from this cracking, or is it all EJ20/25
heads??