Cracked cylinder heads?

[Rallytech14]

hey

i just pulled the motor off my '02 WRX

i took apart the heads and found cracks between the exhaust ports and spark plus holes

they vary in size, the worst one probably runs about a millimeter or 2 down the spark plus threads

one head has them just on the exhaust port side

the other has them on both intake and exhaust

i was wondering if anyone else had this problem, and how common it was. and if it was anything major

 

[diabloadsit]

Wow dude you are like hosed. This freakin sucks donkey nutts for you.

 

[IBratmanI]

It's very common on older Subarus motors, especially EA82's, but never cause them any issues in running. But I'm not sure about the newer ones

 

[diabloadsit]

I have never never ever heard of a wrx/sti having head issues like this. I have seen were pistons have ate themselves and caused head issues but not issues in the head by themselves.

Does the crack go all the way from the exhaust port to the threads on the spark plug holes?

You might want to invest in some new heads. Why are you taking your motor apart to begin with? Replacing the short block?

 

[jcovey2.5]

I have a hybrid block for sale if you are interested. STi shortblock with 05 wrx heads

 

[inski]

I never seen a 2.5 or 2.0 head cracked. I've seen a few hundred heads. Please post pictures.

 

[Tyler]

I was looking at a set on NASIOC that had cracks as well. I decided to stay away from those ... haha

 

[Rallytech14]

i dout i could afford that man. but throw me a number haha

 

[Rallytech14]

thanks guys. id like a few more opinions though. bump please

 

[diabloadsit]

like inski said. I have read and seen and heard of a lot of crap parts on the wrx/ sti engine and the heads is not one of them.

Post up some pics. Lets see the damage.

 

[Ryan]

+1 on Pics.

 

[Rallytech14]

it wont show up on a camera, you have too look pretty hard to see them

i decided too just pop the valve seats off and repair the cracks

 

[Apollyon12]

And how are you going to do that?

 

[-=Lobstah=-]

^^^^^ +1

 

[Pedro]

my buddy had a cracked head on his 02 as well.

 

[Ryan]

OMG don't attempt to repair the crack! You crazy?! I would not trust that at all. You can get a used set of heads for damn cheap on NASIOC! Play it safe!

 

[Rallytech14]

dude my father is a machinist

he's owned a shop for 30 years

i trust him haha

 

[inski]

Are the cracks on the combustion side or spring and cam side? This is really an eye opener. I'm going to be looking at them a lot closer from now on. Although, I rarely get to have turbo engines apart.

Glad you have a machinist on your side. that's cool you can fix them Check for warpage. I have seen a lot of warped heads....not many turbo engine heads tho.

 

[-=Lobstah=-]

dude my father is a machinist he's owned a shop for 30 years

i trust him haha

Discounted rate at a machine shop for MS members? ;