(possible broken piston ring?)
04-09-2004, 12:01 AM
#1
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Join Date: Apr 2004
Location: Cape Coral, FL
Posts: 272
Car Info: 1993 Impreza L EJ20 Turbo FWD
Me Need Answers
I have a 1993 Impreza 1.8 Liter Front Wheel Drive, Automatic
I added:
I only ran 8psi and put 150hp to the wheels on the dyno, till I got a 4bar Fuel Pressure Regulator off a Dodge Turbo, Then I ran 14.5psi for about a week and it ran great. Then that friday night I was runnin on the highway with a mustang 5.0, turbo 240, and GST, and was behind them but i was gaining on all of them.
We all pulled off the highway and I looked back and noticed smoke coming out of my car. Pulled over and looked under the hood and oil was EVERYWHERE. I drove it home and it felt like it dropped a cylinder. I thought it might be a head gasket so I got it home and spent the last week installing new head gaskets. When I pulled the heads the cylinder closest to the driver had like a teaspoon of oil in it.
I just got finished and tried to start it up and it wont turn over, it feels like its drowned in somthing and smoke is billowing out of the exhaust. I looked under the engine and brown fluid is coming out of the what looks to be the brand new head gasket, under the cylinder thats closest to the driver that had the oil in it. The liquid doesnt look like oil or coolant and doesnt smell or feel like either but it does smell burnt.
Only thing I could think of is that the piston ring has gone bad and is leaking oil and is blowing it out of the head gasket. Any Techs have any idea wtf is going on?
I added:
I only ran 8psi and put 150hp to the wheels on the dyno, till I got a 4bar Fuel Pressure Regulator off a Dodge Turbo, Then I ran 14.5psi for about a week and it ran great. Then that friday night I was runnin on the highway with a mustang 5.0, turbo 240, and GST, and was behind them but i was gaining on all of them.
We all pulled off the highway and I looked back and noticed smoke coming out of my car. Pulled over and looked under the hood and oil was EVERYWHERE. I drove it home and it felt like it dropped a cylinder. I thought it might be a head gasket so I got it home and spent the last week installing new head gaskets. When I pulled the heads the cylinder closest to the driver had like a teaspoon of oil in it.
I just got finished and tried to start it up and it wont turn over, it feels like its drowned in somthing and smoke is billowing out of the exhaust. I looked under the engine and brown fluid is coming out of the what looks to be the brand new head gasket, under the cylinder thats closest to the driver that had the oil in it. The liquid doesnt look like oil or coolant and doesnt smell or feel like either but it does smell burnt.
Only thing I could think of is that the piston ring has gone bad and is leaking oil and is blowing it out of the head gasket. Any Techs have any idea wtf is going on?
Too much boost for that engine. You need to build it first 
04-14-2004, 04:07 PM
#5
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Join Date: Apr 2004
Location: Cape Coral, FL
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Car Info: 1993 Impreza L EJ20 Turbo FWD
I just put new head gaskets in though, and now the car wont start, it fires but wont turn over, and the brown liquid leaks out. im gonna pull the engine out and give it a closer look, i replaced the gaskets really quick with the engine still in the car cause i need the car for the weekend.
im lookin at forged pistons and rods with wrist pins and rings for under $800, then get my crank shot peened or somthing and copper head gaskets, and i want to semi-close the deck also, and then run a good 18-19psi on it, and convert it to rear wheel drive and manual tranny, with a good tire i think it would do low to mid 13's, and then i would need bigger turbo and injectors. and shoot for lower 12's. then get the car repainted.
I NEED A JOB!!! so much work to be done.
im lookin at forged pistons and rods with wrist pins and rings for under $800, then get my crank shot peened or somthing and copper head gaskets, and i want to semi-close the deck also, and then run a good 18-19psi on it, and convert it to rear wheel drive and manual tranny, with a good tire i think it would do low to mid 13's, and then i would need bigger turbo and injectors. and shoot for lower 12's. then get the car repainted.
I NEED A JOB!!! so much work to be done.
04-14-2004, 07:07 PM
#6
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Location: Washington
Posts: 1,821
Car Info: 93 BG5, 00&01 GM6, 06LGT, 07STi
why not go 2.5?
I got some 2.5 turbo pistons for sale!
Yeah, dude, as far as the oil/water mix.... usually messed up rings or cracked pistons are pretty obvious. Rings should have left score marks in the cylinder wall. And rings don't account for coolant.
It really sounds like a cracked block or head.
Did you pull your dipstick? does the oil look brown too?
I got some 2.5 turbo pistons for sale!
Yeah, dude, as far as the oil/water mix.... usually messed up rings or cracked pistons are pretty obvious. Rings should have left score marks in the cylinder wall. And rings don't account for coolant.
It really sounds like a cracked block or head.
Did you pull your dipstick? does the oil look brown too?
04-14-2004, 08:53 PM
#7
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Join Date: Apr 2004
Location: Cape Coral, FL
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Car Info: 1993 Impreza L EJ20 Turbo FWD
the oil is pretty fresh cause its brand new and the car wont even start, and i dont like the RS engines, im just not a fan of them. there are not scratches alone the cylinder wall either or on top of the pistons, couldnt check the bottom though, ill try some other things and if i still cant get it to work i guess ill pull the motor apart and check the pistons.
05-05-2004, 10:04 PM
#8
you are running with stock EJ18 internals, right?
That's 9.5 compression ratio, you know that...
even if the motor is repairable, i wouldnt run it like that..
the reason the crank wont turn over is probably some sort of fluid in the cylinder.
see if it turns without spark plugs.
That's 9.5 compression ratio, you know that...
even if the motor is repairable, i wouldnt run it like that..
the reason the crank wont turn over is probably some sort of fluid in the cylinder.
see if it turns without spark plugs.
06-02-2004, 06:49 PM
#10
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Originally Posted by xitonedefix
im lookin at forged pistons and rods with wrist pins and rings for under $800, then get my crank shot peened or somthing and copper head gaskets
I think your engine plan is well-intentioned but misguided. The forged pistons and rods part is fine (the STi rods are powdered metal and quite good but I don't know what they cost from the stealer). Personally I wouldn't do anything to the crank except get it checked for straightness and balance and then polish the journals. (No grinding, no shotpeening, just the polishing.) Reason being is that you want the journal ODs to be fitted to the stock bearings, because the stock bearings are available in various thicknesses so you can tune the oil wedge clearance. Shotpeening probably won't hurt anything but you won't be gaining anything for the $ either.
And as for the head gaskets, use late model MLS gaskets instead of plain copper. Copper gaskets don't like to seal cold engines. Factory late-model MLS gaskets seal good and are very strong. The downside is that your machine shop needs to be familiar with MLS gaskets in order to mill your heads and decks smooth enough to use them.
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