lewisj

Right Im looking at getting a impreza for track days
All I need to know is what are the main problems with the very old shape impreza.
I dont know what type Im going for but itll be a cheap one as Im on a budget.
So what parts break first?

Also I/we want around 300bhp whats the easy'st way to get this?
intake
full exhaust
intercooler upgrade
Boost upgrade
walbro??????

Also will the standard ecu be able to cope with these upgrades or will a aftermarket ecu be needed?

what boost is the standard turbo able to take also what turbo is the standard turbo?

Im sorry Im a complete noob but we got to start somewhere so .....be gentle

p.s. what things shall I look for when buying?

RRH

Your best best for track is a type RA. Try to find one that's already been modified as it will ultimately work out a lot cheaper. There are quite a few round at sensible money- there was an early type RA on here a week or so ago for circa £3500. The early RA has very short gearing, so 240bhp from an early RA feels like 280ish from a UK car / import WRX.

One word of warning though- they are not cheap to run on track, in terms of brakes, fuel and tyres. Similar (if not more) fun can be had for less money.

Although they do grip pretty well, they don't 'handle' straight out of the box and need significant experience and tweaking to get them 'right' and to your taste. This is not necessarily expensive though- you just need someone who knows what they are doing to get the suspension geometry right.

andythejock01wrx

jlewis - note on Scoobynet the "very old shape impreza" is called a "classic".

People with the old model get most upset if you don't use that term !!

RedScoob

Take a look at the FAQ to get an idea of which model you are after....
Impreza FAQ
Also, you may find this useful... Some dyno results of various models with and without modifications. If you're chasing horsepower figures, hopefully this will give you an idea of what mods are effective.
Impreza Dyno Results
Hope this helps.

lewisj

thank you for the replies
RRh we intend to do extensive geometry set ups so out of box handling is fine.
and sorry "classic" is what I ment

What problems are common with imprezas
and what are the stock internals capable of and same question abou the transmission
regards

Varboy

good link that dyno result page, would have been better if it had been kept up to date.

Perhaps we should have a rolling road league on ScoobyNet

lewisj

bump

lewisj

any one else help?

lewisj

please help
What problems are common with imprezas
and what are the stock internals capable of and same question abou the transmission?
regards

lewisj

am I in the wrong section or dosnt any one know?

RedScoob

Really depends on what model you are looking at.....
Standard turbo is a TD05-16g for most early imports, thay can handle around 1.5bar reliably (IIRC), but you'll need to remap the ECU to make sure that fueling is taken care of....
You will get alot of varying answers on what the standard internals are capable of. Personally, as a layman, I reckon you'd be talking around 320-350bhp for an early STi (a bit less for a WRX). You'll probably need an uprated clutch at this point, and you'll be popping gearboxes if you do any action at the strip.
Hopefully this'll start the ball rolling.....

lewisj

cheers
well Im planning on getting a "classic" type ra
the car will be used for racing not dragging
so gearbox's are a weak link?
also 320-350 fhp or whp?
cheers