Safest standard boost ST205

[touge rolla]

Instructions!

[NZVengeance]

ty guys

[Prymal]

I have a ST205 WRC it runs 12.5psi standard

Whats the max i can take that too for a all day driver without worrying about sh*t going wrong


Cars done 170k

Anhh another WRC owner .. welcome to rare club

Ill assume yours is a JDM one ( NZ new group A here )

mine runs 16 daily , but will spike upwards to 18 psi and hit boostcut on cold nights

No tweaks to management , just ste standard group A ECU and a 3" dumppipe

Still goes strong , though the interwarmer could be more efficient , and boost would be better if it could be stabilised

[NZVengeance]

yea mine is a JDM one there is only like 3 NZ new ones in NZ.

surley there must be someway to stabilize the boost. ideas from people would be good.

[flygt4]

external wastegate, or standard, less than 3" diameter downpipe .

as sergei mentioned, he went to great lengths to try retain the standard internal wastegate, and couldnt quite keep it from overboosting and spiking. can't remember what he did in the end. there is a thread somewhere, search for "ct20b overboost"

[flygt4]

viewtopic.php?t=50929&start=0

because i'm a good bastard

[Dell'Orto]

Weird that you guys had issues with them overboosting, once I sorted out the placement of the wastegate pipe on my downpipe it never moved from the desired boost level.

[NZVengeance]

hmmm. well when i do the exhaust i will see how it goes.

ill contact one or more of you when the time comes and take the neccisary test.
murphys law states it wont be the same :p

[MasCam]

This might help (or confuse the situation even more)

Vacuum diagram for a ST215 (not quite the same but close enough)

pardon my ignorance, but what is the R-ISC-V on the intake manifold that connects to the ECU??


chris

[sergei]

R-ISC-V, I don't know what R stands for, but rest is Idle Speed Control Valve..

[Prymal]

4 NZ new group A's i know of

Red - mine ( all matching numbers - original engine but high KMS )
Red - franks ( Totally worked over , new engine - garys old car )
Blue- richards ( Mr3 gen3 conversion , restored from write off )
Silver - Some old dude frank knows -( its a minter - all original )
( there was a white one but it was destroyed in an accident )

I know of 2 , maybe 3 JDM group A's
1 red one - was on the north shore of auckland
1 blue one warwick ( revhead) knows i of i believe
1 bodykitted blue one on trademe recently )

Quite a rare car in NZ . Does yours still have the Antilag and other bits still intact ?

let us know how you go with your boost issues too!

[Mr Revhead]

JDM one i know is red currently in hokitika of all places


i think the numbers sold are a little higher than a lot of ppl think as we have had 2-3 in here in the last 18 months, red and blue i have personally seen.
iv got the details off all i found here somewhere.... was about 8

[NZVengeance]

mine still has the anti lag factory inter cooler sprayers

chassis number is ST205-0001125

blue wrc?? i had thought they only came as red. unless it was resprayed?

[Prymal]

mones st205-0002005

According to pamly north toyo headquarters it was the first EVER st205 to be sold in NZ ..

Dunno what that exactly means - ie if it was the first to be sold to a dealer in the country , but its records are the earliest ..

Wish i could get a straight answer out of them , finding any information has been a challenge

Even spoke to Neal allport ( nz rally chamion ) the other day

he cant even recall driving richards one for the magazine feature back in 1994 ..