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10-12-2010, 08:57 AM | #1 |
Scooby Newbie
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Join Date: Jul 2010
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Forged Pistons
I have an 07STI 35K, mods GT52 turbo, CAI, TBE, 850cc injectors and protune about 340WHP. I had a problem with cylinder4 cracked piston sleeve. I had that fixed but it still smokes when I step on hard and the inside of my car smells like oil. If I drive the car hard and then let it sit and idle for about 5 mins it starts to smoke. So anyway I am thinking of getting forged pistons. What are some good brands, what kind of rings should I get and will I need to get forged rods as well? Ever since I had these mods done I have had smoking issues. I am afraid to beat on it now in fear it will really let loose. I am going to get a FMI next so they can bump me up to 23PSI boost. But I worry that if I dont get the motor built it will create even more problems after cranking up the HP. Any suggestions or help would br great
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10-12-2010, 10:26 AM | #2 |
Scooby Specialist
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MWSOC
Location: Marshall, MI
Vehicle:2009 WRX 2014 Forester XT |
Fix the engine |
10-12-2010, 12:38 PM | #3 |
Scooby Specialist
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Join Date: May 2006
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Location: Northern VA
Vehicle:2009 DGM LGT Spec.B 08 Audi Q7 4.2 PRM |
How was the cracked sleeve "fixed"? To my mind that is a new block period. As far as I know most machinist wont even touch an EJ block with a cracked cylinder wall as far as sleeving it...
Forged pistons ain't gonna fix your smokiness... You need to find out exactly what is the cause of the smoking and then you can chose the fix among the applicable options... Your connecting rods are already forged... as are all EJ motor rods... '07 STI ruined, it's a G-Damn tragedy... -soobaviator |
10-12-2010, 01:42 PM | #4 | |
Scooby Newbie
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Vehicle:2018 WRX STi WRB |
Quote:
As far as brand of piston, do some searching on the forums about pistons |
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10-12-2010, 02:57 PM | #5 | |
Scooby Newbie
Member#: 252362
Join Date: Jul 2010
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10-12-2010, 03:01 PM | #6 |
Scooby Newbie
Member#: 252362
Join Date: Jul 2010
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Got a new short block but the problem is back again I mean the smoking. I was told the OEM pistons are not going to be able to handle the power and this would probably happen again. I am thinking of dumping the car but I luv it. The only thing is I am not going to sink 6K to fix this problem
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10-12-2010, 03:01 PM | #7 |
Scooby Specialist
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Join Date: May 2006
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MAIC
Location: Northern VA
Vehicle:2009 DGM LGT Spec.B 08 Audi Q7 4.2 PRM |
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10-12-2010, 11:46 PM | #8 |
Scooby Newbie
Member#: 196786
Join Date: Dec 2008
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Here let me help you out
Since your unwilling to sink 6g in your car to fix it right.. sell it and buy a rsx type s or civic si. Problemo solved. |
10-15-2010, 04:00 PM | #9 |
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Location: Sanford, NC
Vehicle:2003 Impreza WRX WRB |
There are too many unanswered questions to even begin to start. Its smoking and you want to buy a TMIC and increase the boost.
Fix the issue or it will get very expensive fase. Was the shortblock you replaced it with new or used? Were the pistons new or used? Did you crack the ringland? If so did you check the compression on the other 3 and if so what were the numbers? have a compression check and leakdown test on the motor asap. Should not cost ya more then 100-150 bucks. That will tell you alot. Last edited by C4NiNjA; 10-15-2010 at 04:07 PM. |
10-15-2010, 04:30 PM | #10 | |
Scooby Guru
Member#: 32669
Join Date: Feb 2003
Chapter/Region:
SCIC
Location: Woodland Hills
Vehicle:2007 2.34LR, EFR7670 LINK G4+ hybrid STi |
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10-15-2010, 05:18 PM | #11 |
Scooby Specialist
Member#: 133814
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SCIC
Location: 29 Palms (760)
Vehicle:2004 WRX JBP |
Pistons are the weakest point EJ motors. Next are Bearings.
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10-15-2010, 07:19 PM | #12 |
Scooby Newbie
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10-15-2010, 07:23 PM | #13 |
Scooby Newbie
Member#: 252362
Join Date: Jul 2010
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About 3K but been taking it easy cause it doesnt like it if I hammer it. I got a more conservitive tune now so it is ok but I want an aggresive tune next year and with the forged **** i should be ok right
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10-15-2010, 07:28 PM | #14 |
Scooby Newbie
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Join Date: Dec 2008
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Yea homie u b aite
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10-15-2010, 11:45 PM | #15 | |
Scooby Guru
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Vehicle:2007 2.34LR, EFR7670 LINK G4+ hybrid STi |
Quote:
He will not be aite if the same tuner is hooking him up |
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