2wdcossie

what are the boost pressures run by STANDARD scoobs?

UK MY94 = ????
Jap WRX MY94 = ????

and what can you run to without modding other bits, i was thinking 15psi should be ok, would it?

Shaun

They should both be approx. .8 bar or 11 psi. An airfilter and exhaust could raise the boost to 15psi, but before you do that make sure there is enough fueling in the existing original map!!

Shaun.

2wdcossie

"An airfilter and exhaust could raise the boost to 15psi", here was me thinking id have to adjust the actuator .

i take it the fuelling will need setting on a rr?

Mr Footlong

iTrader: (7)

I've got a 94 WRX and she kicks out all of 11PSI too. Would like to make it higher if I could, as I have had a 98UK gearbox and rear diff added. Excellent box for general and motorway cruising, but lacks power/acceleration over the other boxes. Can't have it all I suppose......

Cheers,


Nick

[This message has been edited by Mr Footlong (edited 22 May 2001).]

2wdcossie

can't you just wind the atuator rod in a few turns like you can on a cossie??

2wdcossie

i thought that the actuator was THE way you could adjust the boost, if i fit a pipe and filter will it raise from the standard 11 to 15 ish anyway without messing mechanically then??

[This message has been edited by 2wdcossie (edited 24 May 2001).]

2wdcossie

do i take that as a NO then ????

Biffo

Of course you can wind the actuator in a few turns!
Better ring the AA or RAC first though LOL
Uncle Biff

2wdcossie

Uncle Biff, why's that then, thats what was done on mine when it had the stage 1 conversion. if you know what boost pressure you can reliably run a standard scoob to without changing the fuelling etc why not up it to that?? on mine you can measure the psi increase per turn of the rod somehow - not sure of the figures though.

Shaun

Yes you can just adjust the actuator or fit a bleed valve.......but putting on an induction kit and fitting a better exhaust, will also raise the boost pressure because of the improved breathing!!! If you are gonna mess around with bleed valves though, make sure it's whacked on the rollers to check the fueling and advance for det and lean running etc etc!!!

Shaun.

ork

Need any questions answered?


LOL , Only Joking!

mook

Standard Rover turbos come out of the factory with 8psi, but they can be safely upped to 12 without any other mods required. Obviously filter and exhaust help, as do cold days. Above that loads more needs looking at to make sure fueling and such like, as well as brakes and suspension, is as required. I imagine there's a safe limit with the scoobs too

2wdcossie

"I imagine there's a safe limit with the scoobs too "

yes but what???

Biffo

2wdcossie
The safe limit for a Scoob is about 5psi BELOW the factory setting LOL
Uncle Biff
PS Remenber one thing mate....Scoobs and Cossies are two different things....If you know what I mean

2wdcossie

scoob owners and cossie owners are also different, one can give a straight difinitive answer based on experiences of their car. standard cos runs at 9 - stage 1 overboosts at 15 and holds at 14, no mods other than chip needed - FACT.

Stef

2WD.
That may well be the case, but you just can't treat a Scoob like you can a Cossie. More importantly, you don't need to.
Because a standard Scoob is being 'strangled' so much, improving the breathing can up the boost considerably, from 11 to 15psi in my car. Fitting the Prodrive ecu then increased this further, up to 18psi. I have never touched the actuator.
I guess as long as you fit a boost gauge and keep the boost within reasonable levels (18 is proabably high enough without bringing in the overboost cut-off) then I don't see the harm in adjusting the actuator if you're that way inclined.

Stef.

2wdcossie

i take back my previous statement.

thankyou stef

i wont mess if you dont need to but i just didnt know if people did this like i have on mine.