Cheapest place for EJ207 - Page 6 - Perth-WRX.com

DJDINO · #51 22-04-2009, 08:01 PM

Quote:

Originally Posted by JME

GD sti is bucket over shim, much more reliable at higher boost/rpm. I had the v6 sti shim over bucket setup in the wagon, lots of overrun antilag and 9k rpm made the setup somewhat fragile. May not affect most builds but there is a weak link nonetheless.

Would GC shim over buckets last OK at 6500-7000 track work

BALISTC · #52 22-04-2009, 08:28 PM

Quote:

Originally Posted by scoobygez

i was under the impression all jdm sti's were forged pistons and hand built blue printed engines.....

Yep, built by ninjas.

jEstEr? · #53 22-04-2009, 08:34 PM

Quote:

Originally Posted by scoobygez

i was under the impression all jdm sti's were forged pistons and hand built blue printed engines.....

Geez you've been reading far to many american forums. JDM YO.

Stop filling the forum up with your guessing answers.

dtrally · #54 22-04-2009, 11:26 PM

Quote:

Originally Posted by WRXTASY

Great porting is a technical artform, and great gains are to be had with matching cams.
The only person I would recommend is a guy on Rexnet, the name escapes me at the moment....

Dunno if he's on rexnet (I don't frequent that forum) but Tony Knight (Knight Engines) in Adelaide has done some heads for me and they were superb. His porting work is bench proven and I believe his port shaping to be among the best around.

As above, it's an artform learned over many years and many failed experiments, letting your mates burrow out the ports with a dremmel will more than likely yield worse flow than stock.

Jim621 · #55 23-04-2009, 09:13 AM

Quote:

Originally Posted by sMY00n

can you use the heads from the EJ20 MY99 ??? on the EJ207 and if so would there be a change in power or would there just be a limit as to how much power they would handle

Mate, yep, heads bolt stright on.
No immediate change in power from the swap, but you are able to run more boost so get more power out of it that way.

As WRXTACY mentioned earlier in the thread, my99/00 heads are the best flowing up to 05 so you get a great little engine for a small cost.

Steve.

Fozzy · #56 02-07-2009, 10:25 PM

Bump.. Anyone bought one of late?

daveygravey · #57 03-07-2009, 06:19 AM

saw them on ebay last week think they were 2700......

tuna · #58 03-07-2009, 06:44 AM

regents?

maddog · #59 03-07-2009, 07:53 AM

Quote:

Originally Posted by BALISTC

I had to convert to shimless after putting bigger cams in, not to mention my original motor spat a shim after running lots of antilag on my original motor.

Ouch antilag = Grenade!

Unless I missed a few comments (as I can't be fagged reading the entire thread

) no one has mentioned sodium filled valves yet? They came with the V5 STi's and latter models. They are marked with a "3" where your vanilla models came with a "2" stamped on them. Also some V5/6 heads may have came shim over buckets, these can literally drop out at high revs or with > 10mm lift cams or antilagging...

Stage 1) 99 heads on a factory EJ207 is a pretty sweet combo
Stage 2) Upgrade the valvetrain to bucket over shims,sodium filled valves and cams to suit your ego.
Stage 3) Ship your heads to "engguy" off Rexnet and add $4K

maddog · #60 03-07-2009, 08:10 AM

Quote:

Originally Posted by LegacyRS

V5 & 6 JDM sti's had cast pistons, with the option for forged.
If the owner didn't tick the forged piston box it had cast pistons fitted.

I believe the RA's were the only JDM fitted with forged slugs by default in the GC's.

Early V5 ADM had cast pistons but later v5 and all V6 ADM had forged slugs (and less boost/timing), we were the only market where this occured.
Mainly due to quite a number of V5's going boom on our best fuel (95Ron) available at the time.

Hence why JDM v5 & 6 is 206kw and ADM is 195Kw (aus detune).

HTH

I would disagree with most of these comments, Aus spec V5/6 STi's all came with forgies as did JDM STi RA's. The JDM WRX RA models had cast pistons, shim over bucket and the higher 9:1 CR along with silver inlet manifolds a VF28/9 and group N Cams. Note: There are lepers or exceptions in nearly every model run so its fair to not say someone is wrong. Bouncing a 180kph limited Aus Spec V5 STi off the speed limiter around a track accounted for many a premature death. I thought the power cut came as a SA knee jerk reaction to limit liability.