Hi There Nice to meet you all.
Please can you help i have just bought a 2003 wrx sti type uk with pro drive performance pack it goes like stink and am very pleased but i have noticed the bottom end knocks until it warms up can you tell me the best place to get a replacement or somewhere in sussex that would repair it . also what is the difference between engines as i have been offered several but really want one with the same power or more and not sure what i need to look for.
Cheers

 

Sounds like Piston slap to me - quietens down as the pistons expand with the heat generated in the engine.

Mick

 

dont rule out the cam belt tentioner either, they sound like a bottom end knock.

 

Thanks For your help Is piston slap a major concern it takes about 15 minutes and then runs like a sewing machine not sure if i need to change engine?

 

did the seller tell you about the knocking when you bought the car? i'd be taking it back

 

if it clears when warm then it cant be big ends, as big ends knock all the time. once the big ends start to go, they usually let go pretty fast so i think you would know about it by know and you would notice a drop in power as the knock correction would be on overdrive. best to get a proffesional take a listen. mine used to knock bad when cold, i changed the belt and some pullies and now its fine.
ive had to give my car a MAJOR service since ive had it. seems the previous owner in japan may have neglected it a bit.

 

Thanks for or help i think i may take it to local scooby dealer and see what they think

 

if it is piston slap then this is not a big deal. so long as it doesnt use oil then it can run for many many more miles.

 

i take it i should wait till it stops slapping and shuts up before i give it a thrashing