Pop Quiz, what needs replacing on this car?

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Jan 25, 2005 | 05:43 PM

#76

STIdevildog

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From: Peninsula

Car Info: 05 STi

Quote:

Originally Posted by STIdevildog

Well for one, those plugs are obsolete and they do not make them anymore I think. The spark plug is 1 step colder than stock if the plugs were from a subaru. May be from a snowmobile or from a dirtbike but you didn't say. I take it the 7 ngk plug was put in after mods were done. One cylinder is running rich. The others aren't absolutely perfect either. pre ignition or knocking is my conclusion. I'd put the 6 heat range back in to see how it runs and check the plugs again after some miles. The car could be running back at idle as well. Anyone check the pcv valve? what type of oil is being used?

I thought I was the first to say pre ignition/knocking.

Jan 26, 2005 | 09:32 AM

#77

Heavy Dan

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From: Bay Area, CA

Car Info: '02 WRX, Aspen White, Stage 1 Cobb

Post #22: new rings! and I still feel that you should put spark plugs back on the car... in fact, you should "re-place" the spark plugs

Jan 26, 2005 | 09:53 AM

#78

UK n00b

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From: Farnborough, Hants

Car Info: the blue bucket

Here's some pictures from this morning, I will get the actual internal pictures and the damage done up a little later on.

Mike

Jan 26, 2005 | 10:09 AM

#79

zumnwrx

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Car Info: R.I.P 03 aspen white wrx

edgar,

Jan 26, 2005 | 10:14 AM

#80

Zoeb2s

I <3 White Girls

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From: Danville, CA

Car Info: E92 M3, E70, F32, E21

Quote:

Originally Posted by zumnwrx

edgar,

shows up fine for me

Jan 26, 2005 | 05:13 PM

#81

UK n00b

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From: Farnborough, Hants

Car Info: the blue bucket

Ok here is the piston from Cylinder #1

www.daporkchop.com/host/Piston.jpg

Mike

Jan 26, 2005 | 07:35 PM

#82

LIC Motorsports

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Quote:

Originally Posted by LIC Motorsports

Far left plug, obviously looks black, not pure oil or fuel, so possible broken ring land.

-Adam

Well, I may Not have been the first, but:

That's a nice chunk taken out of the ring land

And broken rings to go with it

-Adam

Jan 26, 2005 | 07:57 PM

#83

Steven@Coach

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Joined: Jun 2004

Posts: 966

From: Subabrew Crew

Car Info: 2011 WRX Hatchie

What caused it?

Jan 26, 2005 | 08:52 PM

#84

UK n00b

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From: Farnborough, Hants

Car Info: the blue bucket

Quote:

Originally Posted by Steven@Coach

What caused it?

Well... the million dollar question.

I think the coilpack went bad to begin with but it's hard to tell for sure what was the root of all of this 100%.

Anyone else want to throw out some idea's of what may have caused this?

Mike

Jan 26, 2005 | 11:03 PM

#85

porkchop

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From: Under a car

Car Info: some silver thing

perhaps it's the after effects of many detonation events....

Jan 26, 2005 | 11:19 PM

#86

MARKSTI

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From: CA

Quote:

Originally Posted by porkchop

perhaps it's the after effects of many detonation events....

Detonation kills

Its alot harder on a motor then almost anything.

Jan 26, 2005 | 11:40 PM

#87

LIC Motorsports

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How many miles on the motor and plugs, since they're not original?

-Adam

Jan 26, 2005 | 11:52 PM

#88

UK n00b

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From: Farnborough, Hants

Car Info: the blue bucket

Quote:

Originally Posted by LIC Motorsports

How many miles on the motor and plugs, since they're not original?

-Adam

The motor had 40k, the plugs have about 25k. They were replaced at the time of the installation of a vf34 setup. We were informed the plugs were gapped correctly ie down from 40+ to about 28 but based on we have not worked on anything on this car other than the suspension I am not 100%.

Mike