Which piston is which (i.e. numbering)?
Number 3 in the one nearest the turbo, number 4 is nearest the washer reservoir, number 2 is nearest the battery, and number 1 is nearest the air filter. Clutch and general transmission Q. When the engine is cold I have excessive clutch judder. A. The Impreza Turbo puts out 208bhp plus, into a permanent 4 wheel drive which gives enormous grip on nearly all surfaces. To break traction from a standing start is near impossible on normal dry tarmac surfaces, and so the clutch takes a massive amount of abuse. To withstand this the materials and construction unfortunately mean the clutch does not operate at its best when cold. Sometimes it is suggested to fit a Group N clutch to try and cure the problem. If you think about the way a rally car is abused by its driver then this type of clutch will indeed be stronger. Then again will this type of clutch be ideal for trickling along in traffic, gentle pull aways etc? A rally driver is more likely to be dropping the clutch at full revs, and chang
