wrxcook

Hi does any off your cars suffer from piston slap at low revs, my03 wrx does this and has done since it was rebuilt with a sti short block over 10000 miles ago, I've just had it mapped and the mapper said this is normal with forged pistons, what's everyone's thoughts on this

Shaks-STI

iTrader: (7)

Yes forged pistons do that, my new rebuild does too so dont worry it normal

wrxcook

Was it rebuilt by API I'm thinking the might have used the same pistons

barnshaw

iTrader: (1)

i have mahle pistons on a forged build and when i start up you can hear the tick , does get a bit better when warmer but perfectly normal for a forged build

Shaks-STI

iTrader: (7)

No mate it wasnt by API

LegacySTi

iTrader: (13)

That was a bit random???

All forged pistons do it!

wrxcook

Not at all as I said the car has done 10000 miles and I'm happy with the build its just it was through this site I got in contact with API and have noticed alot of people use them on here

Baz82

Yeah its normal, I have wiseco pistons in my 2.5 and it honestly sounds like a bag of spanners starting cold first thing in the morning.The engine has cover 16000km since I built it and its fine, when you load the engine up does it go completely out of it?

wrxcook

Yes there is no engine slap when I put the foot down, its in the morning mostly, I usually start it and let it idle for five minutes, just wanted to know if it was normal

magicseven

It's normal for mahle pistons niceeeee

scoobygaz1

iTrader: (3)

Hi mines the same as Baz82`s except mines a 2.1 stroker when she gets going its