mickeymouse

after having looked at some vids on youtube it would appear that I have `piston slap`

I understand what it is and and why its doing it..

apparently its quite common in petrol engines (especially boxer engines) although tbh ive never heard of it before..!!

so how common is it in impreza engines??
we talking 50%?

rb5 stu

What year is the car? Does it stop when the engine is warmed up? 1997 cars are prone to it big time but all cars can get it.

Gear Head

iTrader: (2)

I had it on both my 1998 sti and 1999 UK turbo.
Very common but you shouldn't really get it with the ambient temperature as it is at the moment. Also, it will clear when warm. If it doesn't, it may be your big end bearings.

Welloilbeefhooked

iTrader: (3)

I get it all temps on my 97 type r. It was the same on the 98 wrx I had and to be fair, over 40k miles it never got any worse.

palma0778

iTrader: (1)

Iv got it in my 2002 bug wrx.It was very loud on cold start up but disappear compleatly when engine warms up.Never cause any problems.

poolio74

+1

jazzyjembreaze

iTrader: (11)

A lil mouse with clogs on

jaygsi

iTrader: (46)

Had few impreza never had it before

RICHARD J

iTrader: (4)

Get a fully forged build with proper piston to bore clearance to run high boost & you'll know what slap really sounds like. Nothing to worry about as long as as it doesn't get louder & you know for certain it's slap & not another issue.

Gear Head

iTrader: (2)

When I sold my old UK turbo, the buyer took it to tsl motorsport the day after he bought it as he was so worried. They advised him that it needed a rebuild! He sold it within a few weeks. 40,000 miles later and the engine was still going strong.