Help with STI V7 engine knocking sound

[STI]

My V7 starts to make knocking sound when cold, went away after warmed up. Not yet get it checked by mechanic, but i think it should be the bearing.

Question is what are the options to get it fixed? R they going to be costly? ???

Thanks guys

[Stoffa]

mine did that for a while I thought it may be a bearing, took it to get checked out at sublab, it turned out to be a waterpump. if it was a brearing it would go pretty quickly then overheat

[Valkyrie]

I thought it is normal to Subaru to have knocking when cold start as long as it goes away when it is warmup.

My one is like some kind of knocking when get the car out from garage for the first few ten meters then the noise is gone. Especially happens in the morning. My mechanical says it is normal as over the night all the enginer is on the bottom of the block. It takes sometime for the oil to run through everywhere in the block. This is what I have been told. don't quote me ???

How long does the noise stay? is it all the way you drive until it warm up?

[Guest]

The ver 7 sti was the last ver to come with subaru forged pistons - so they could be behind the noise. When cold forged pistons can be abit noisey - once they heat up and expand the noise goes away.

[QRAF]

how can you tell if a car has forged internals?

apart from opening it up of course?

[Guest]

 QRAF said:

how can you tell if a car has forged internals?

apart from opening it up of course?

Apart from the obvious.

When cold forged pistons can be abit noisey - once they heat up and expand the noise goes away.

[QRAF]

mine knocks/rattles when cold thats all, once its warmed up or i start reversing down the driveway its gone.

I just thought my motor was getting old and tired or an engine mount is tired.

i guess i'll never know till its apart

[STI]

 Stoffa said:

mine did that for a while I thought it may be a bearing, took it to get checked out at sublab, it turned out to be a waterpump. if it was a brearing it would go pretty quickly then overheat

My water temp seems to be normal, no overheating at all. But according to the previous owner, the waterpump was leaking so he replaced it with a new one about 20k ago. Maybe it's a crap one.

[QRAF]

by crap do you mean not genuine

[STI]

 QRAF said:

by crap do you mean not genuine

Dont know, done by the pre owner at fast4s. i only got the paper

[STI]

 Valkyrie said:

How long does the noise stay? is it all the way you drive until it warm up?

Normally 5 mins till the oil is warmed up, sometimes 10 mins tho

[Guest]

Mine does that too. goes away very quickly though. like 2 or 3 seconds after starting. im hoping its not a bearing.lol

[QRAF]

 matty981 said:

Mine does that too. goes away very quickly though. like 2 or 3 seconds after starting. im hoping its not a bearing.lol

+1 :'(

[Johnnynz]

Mine has a definate knock on cold start but I got all forgies put in during my rebuild.

[loud_As]

 STI']

[quote name='QRAF said:

by crap do you mean not genuine

/quote]

Dont know, done by the pre owner at fast4s. i only got the paper

well theres your problem

[RAYDEO]

my fogies are noisy as hell... even when warm.... not as bad as cold but still audible

[rex-leggy]

 RAYDEO said:

my fogies are noisy as hell... even when warm.... not as bad as cold but still audible

+1 same here dont think its a problem tho . guy at autotech told me some subarus tend to have alot of knock and some have none

[RAYDEO]

 rex-leggy']

[quote name='RAYDEO said:

my fogies are noisy as hell... even when warm.... not as bad as cold but still audible

/quote]

+1 same here dont think its a problem tho . guy at autotech told me some subarus tend to have alot of knock and some have none

yeah my engine builder recons its a mint engine (should be for the price i paid)

anyway... sorry to hijack thread

[Valkyrie]

as long as I don't find any metal power in the engine oil when I change the oil I am happy.

[Guest]

Dont know, done by the pre owner at fast4s. i only got the paper

well theres your problem

+1

[Guest]

 rex-leggy']

[quote name='RAYDEO said:

my fogies are noisy as hell... even when warm.... not as bad as cold but still audible

/quote]

+1 same here dont think its a problem tho . guy at autotech told me some subarus tend to have alot of knock and some have none

same here, it's still audible when hot just not as bad, done 25k sinse rebuild and shes still going good so it doesn't bother me.

[Guest keltik]

+1 for fast4's being a pack of wankers

Id get it checked out somewhere else before your small knock turns into a big problem

[Johnnynz]

^^^ Agreed, wouldnt touch anything from them with a barge pole.

Out of 5 people I know personaly who brought from FF 4 had problems inside 10 thou ks.

Two of those people were older people who sure as hell werent thrashing there cars either.

[rex-leggy]

is there smoke coming out the oil filler cap when the car is warm?

[Glen]

 Johnnynz said:

^^^ Agreed, wouldnt touch anything from them with a barge pole.

Out of 5 people I know personaly who brought from FF 4 had problems inside 10 thou ks.

Two of those people were older people who sure as hell werent thrashing there cars either.

I had a problem with a car from them. It was after 30,000km and lots of thrashing and a bit of high boost chucked in. I don't think we can blame them for this one.