Best head to put on CD block?

[Ryan]

Whats the best flowing head to match up with a closed deck block and bolt straight on? To go in my V2 STi.

[Joker]

TT/V3 heads? Guessing totally BUT how abut all CD questions in one thread?

[Guest SPANKU]

best heads for phase one motors are ver 3 and 4 STI heads

the ver4 Heads are more aggressive apparently

[Ryan]

 JoKer']

TT/V3 heads? Guessing totally BUT how abut all CD questions in one thread?

Haha yeah I'll limit myself to 2 heads soz

[quote name='SPANKU said:

best heads for phase one motors are ver 3 and 4 size=4]STI [/size]heads

the ver4 Heads are more aggressive apparently

Yeah I thought it may have been V3 from memory, can anyone else confirm this?

[Guest SPANKU]

do a searh this was a big topic not long ago. there is little different between the 3s and the 4s but it looks the same

there is a set on trademe that im selling at the moment for $450.00 its boxed and ready to go

[BC5RA]

 Ryan']

TT/V3 heads? Guessing totally BUT how abut all CD questions in one thread?

Haha yeah I'll limit myself to 2 heads soz

[quote name='SPANKU said:

best heads for phase one motors are ver 3 and 4 size=4]STI [/size]heads

the ver4 Heads are more aggressive apparently

Yeah I thought it may have been V3 from memory, can anyone else confirm this?

No need to confirm he' s correct, they aren't the best heads but the best to use the phase 1 manifold.

Better heads would be V5/V6 heads but would require the matched Intake manifold.

[Ryan]

 SPANKU said:

there is a set on trademe that im selling at the moment for $450.00 its boxed and ready to go

http://www.trademe.co.nz/Trade-Me-Motors/Car-parts-accessories/Subaru/Engines/auction-264137188.htm

Is that yours? Any Clubsub discount?

Do they come with cams?

[Guest SPANKU]

paid members?? yes! $400 + shipping.

[Ryan]

 SPANKU said:

paid members?? yes! $400 + shipping.

Sweet I've paid Do they include original cams?

[Joker]

hey c'mon TT of same year = STI heads with slightly longer lift IIRC - searching for thread/confirmation now...

[Ryan]

Been trying to find the thread regarding best heads but can't seem to find it.

[Joker]

here tis - I might be getting cams/heads mixed up

like BOV v wastegate... same but different

GTB (1997) & V3 sti cams.......are they the same?

[Ryan]

Ah thanks, GTB heads will be the same as RS-B heads, right? (i.e. 1996 RS-B will be the same as V3/V4 except for cam difference)

[Shale]

As long as they are 20R and not 20H, then yeah bro ;D

[Guest SPANKU]

think with the STI cams you can rev up to 8250-9000rpm redling as the lifters are more soldid and shims underbuckets. remember seeing GTB 7000 rpm?. depending if you want to just get your car going or you want something serious with your motor?

[Joker]

^^ see now theres something I think sounds like a knowledgeable reply^^^

which I have been lacking

[ReubenH]

Ryan, that blown EJ20R of yours is perfectly good for a build with a CD block. That's basically what i did with mine, been running sweet for 25,000K's now with V3 STi stuff strapped on, such as manifolds and ECU and such, with VF39.

And San, auto GT's are 7000, cause they have the EJ20H. Manuals with the EJ20R are 7500, and mine's shown no issue with the STi's redline. Part numbers on the cams for 20R's and STi 20K's are the same, but that's a discussion had before. Also, apparently V3 is shim over. V4 is the shim under engine. ( <-- woops, not so) I can't recall if my GTB (BG5C, so same gen as V4) was shim under or over... i have pics though.

pic 1 and pic 2

Can anyone tell if that's shim over bucket or shim under? I'm still learning.

I'm still trying to figure out exactly what is the same between proper GTB, and STi, and what is different. I was once told they were the same, and shown proof by someone who knows a feck load more than i. But lately i've been finding out some tid bits that confirm, and bits disprove that claim.

[DRFVDR]

To me (and I have not had a later subaru head apart) they look like shim under buckets

[Guest]

Over and Under shims

http://www.clubsub.org.nz/forum/index.php/topic,8643.msg120476.html#msg120476

Any of the mentioned heads will work well.

Can you put a ver 7+ heads on a CDB ? I think you can but has anyone done it ?

[ReubenH]

You learn and then you unlearn. Lol. Meh, 20R heads are still quite capable. Atleast they are from a factory 206 KW engine. But i guess i'll stop claiming they are mostly the same as STi heads.

[Ryan]

Interesting. Version 4 sounds like the go for what I want. Anyone tried aftermarket cams and recommend them?

[Joker]

RACE CAMS YOU NEED RACE CAMS

[Ryan]

To be taken in jest I'm guessing?

[BC5RA]

 Ryan said:

Woah ok lol, what kinda racer cams, i.e. degrees of timing, brands etc?

You don't need aftermarket cams.

V4 STI cam more than suffice.

[Ryan]

I guess I can easily change it in the future anyway.