igratton

Ok folks,

I've got my nice new 60mm gauges:

* Boost
* Oil Pressure
* Oil Temp
* EGT

I am wondering where what levels I should set my warning lights for.

I have a P1 with a full exhaust (scoobysport/blitz hybrid) and an induction kit. Car is run on 97RON + hi dosage of HF Race formula (approx 1/2 bottle per tank of gas)

I figured my boost warning should be somewhere between 1.25 and 1.35 bar (usual peak is 1.2 bar on existing gauge) but I generally haven't got a clue on the others.

I reckoned on:

EGT : > 800 C+ ?
Oil Presure : < 1 bar
Oil Temp : ?

I know this stuff is very car specific but I just wondered if anyone can suggest any starting points.

regards

Ian.

[This message has been edited by igratton (edited 18 July 2001).]

harj

Ian im no expert but from what I can gather mate ive set mine for the time being at:

Boost 1.4Bar Peak
Oil Temp 115 D
Oil Pressure should not drop below 2Bar
EGT around 950C I think, im fitting one next.

So far so good

Harj...

howardb

Ian,
Given the car, I'd go for as soon as you turn the ignition on!

igratton

Thanks very much howard...

what are you trying to say ????


Ian

PS: Hows the EVO...traitor !!!

Bob Rawle

Ian, where is your egt probe fitted as that has a big influence on what warning to set.

2 bar is too close to idle pressure, set it at 1.8 for starters.

igratton

Hi Bob,

thanks for your input.

At present the gauges and senders/sensors have not been installed.

I figure I need to get the EGT sensor as far from the Turbo as possible so that the heat doesn't affect the readings (some distance after the lambda sensor maybe ?)

I kind friend who maintains a GRP N rally scooby will be help out with the installation (thanks ...he knows who he is)

I am not aware of the std idle oil pressure (but I guess I should be). I think somebody once said the std oil warning light on the scoobys kick in a something like 1.2bar which seems close to being too late.

I'll let you know how things go. I am interested in the EGT readings because of the exhaust system I am using.

Ian

Bob Rawle

Hi Ian, the Subaru oil pressure warning light is set at ..... 2.1 psi ie 0.15 bar, yes that is the correct figure so its worse than useless its downright dangerous.

EGT probe needs to be ideally in the off side cast manifold (headers) at the bottom of the up pipe, if its fitted there then set the warning for circa 900 deg C

If you fit after the turbo next to the lambda sensor then set at circa 750 deg C. Don't install it any further away from the turbo else the readings will be meaningless.

It really needs to be as close to the engine as possible so as to be able to react quickly to changes in fueling etc.

Set boost at 1.35, the car will probably regularly hit 1.3 peak with the exhaust and induction especially as you are running with decent fuel octane. I suspect the Defi guage will be more accurate than your existing one.