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Old 03-18-2013, 10:51 AM   #26
Austin13vt
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Hello guys,

I was just wondering how much boost could the stock turbo of a 04 wrx hold safely? Thanks for the help!
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Old 03-18-2013, 11:35 AM   #27
Fir3Fighter
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Quote:
Originally Posted by Austin13vt View Post
Hello guys,

I was just wondering how much boost could the stock turbo of a 04 wrx hold safely? Thanks for the help!
Hahahahahahhaha do some research. This thread is about this guys engine not about your problems...

I would actually go with the 2.5hybrid, more torque and response, just so some research on it. They have built longblocks for as much as people want for a dang short block. --> http://elementtuning.com/competition-engines/
Good luck
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Old 03-18-2013, 01:10 PM   #28
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Originally Posted by wrxlaunch View Post
The same stuff u gonna have to remove from old to install on the new 2.0 shortblock... all that bolts up directly to a 2.5 and u get more trq. You are gonna have to tune with either new 2.0 with your current mods or 2.5 with the same mods and tuning price will be the same regardless of platform.

Just makes sense to go bigger for the same price... same installation process, same bolt ons and needing to tune either way u go. Just my .02
dont give someone false information about a hybrid setup. you obviously dont know much about what your digging into.

the 2.0 block has a different bore than the 2.5 you CANNOT just "Bolt on" 205 heads, onto a 257. the combustion chambers need to be MACHINED to match the 2.5 block, otherwise youll crack the combustion chamber on the heads, and be right back where the OP started. i understand you didnt know, and its ok, just do your research.


OP, any 2.0l block, Will bolt Directly to your heads. if you can find a V7 EJ207 block, they had forged pistons, and the bottom end would be safe to 500whp. the shortblocks arent cheap, but im sure i could track one down for 1000 or less. you would need to use all your stock accessories, and swap out the timing belt, plus buying a gasket kit. all in all, i would say this could be done for.... maybe 1500? ill look around for you.
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Old 03-18-2013, 01:19 PM   #29
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ok, so did some digging, came up with nothing, no one is selling a version 7 shortblock right now. however, i did find a WRX engine with 40k on it. hit him up
http://forums.nasioc.com/forums/show...ighlight=ej205
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Old 03-18-2013, 01:39 PM   #30
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Originally Posted by Gamble_WRX View Post

dont give someone false information about a hybrid setup. you obviously dont know much about what your digging into.

the 2.0 block has a different bore than the 2.5 you CANNOT just "Bolt on" 205 heads, onto a 257. the combustion chambers need to be MACHINED to match the 2.5 block, otherwise youll crack the combustion chamber on the heads, and be right back where the OP started. i understand you didnt know, and its ok, just do your research.

OP, any 2.0l block, Will bolt Directly to your heads. if you can find a V7 EJ207 block, they had forged pistons, and the bottom end would be safe to 500whp. the shortblocks arent cheap, but im sure i could track one down for 1000 or less. you would need to use all your stock accessories, and swap out the timing belt, plus buying a gasket kit. all in all, i would say this could be done for.... maybe 1500? ill look around for you.
I'll triple check my info and get back to you


Ok.... so I checked again and guess what... same answer. Machining is not a must have

Last edited by wrxlaunch; 03-18-2013 at 08:05 PM.
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Old 03-20-2013, 10:05 AM   #31
IamWill
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Replaced the head gasket and my power issue was fixed and compression numbers are perfect. So to all you "derp motor garbage, buy $1800 block derppp" bless your hearts. Thanks to those who were helpful with actual advice and not complaining about "our cars are expensive". Yes they are if you are not mechanically inclined what so ever and pay a shop to do all of your work for you then obviously it will turn out to be expensive. So its not just "our cars", you can turn a Civic into a money pit if you get a shop to do everything for you. /End Rant/ peace.
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Old 03-20-2013, 10:15 AM   #32
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Originally Posted by wrxlaunch View Post
I'll triple check my info and get back to you


Ok.... so I checked again and guess what... same answer. Machining is not a must have
I dont know where you got your info, and im not "calling you out" but your information is false bro.

EJ205 Stock bore 92mm = size of the combustion chamber = 92mm.
EJ257 Stock bore 99.5mm = size of combustion chamber = 99.5mm

so basically, you end up with part of the machined surface of the head, sitting in the combustion chamber, flat and not rounded out. ill do some looking, and post links to people that cracked their heads by not doing the machine work.

Cheap-fast-reliable. pick 2.

to the OP, glad to hear it wasnt a catastrophic failure, WRXs/STis are pretty prone to Ringland failure, and as such when someones like "ive got low compression" alot of us jump the gun. lol. but good luck with the car, and if you have any more questions feel free to ask

first thread of note, a guy asking about the combustion chambers, and noting that the "sharp edges on the head cause a hot spot for detonation"
http://forums.nasioc.com/forums/show....php?t=2278893

second thread of note, first page, ringland failure (due to detonation hotspots im sure) later another person posts stating they are a mismatch and because of this are more prone to detonation/failure. the thread also goes into talk about the various issues with hybrids, and why they're unreliable.

later in life the detonation issues were solved by matching the combustion chambers to 2.5 specs. which is how most people run hybrids today. some people still slap heads on, but theyre a pain to tune, and have issues with the car pulling timing, spitting and sputtering, and failure.
http://forums.nasioc.com/forums/show...ght=hybrid+2+5

shop offering heads with 2.5 combustion chambers talks about the issues with the factory combustion chamber and the common failures. http://forums.nasioc.com/forums/show...ght=hybrid+2+5

short area on combustion chambers and how mismatching can cause knock.
http://forums.nasioc.com/forums/show...amber+matching

pretty much the go to thread for hybrid builds
http://forums.nasioc.com/forums/show...=hybrid&page=2

point proven.

Last edited by Gamble_WRX; 03-20-2013 at 11:04 AM.
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Old 03-20-2013, 07:30 PM   #33
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My info comes from a trusted and proven builder... Andrew of Andrewtech automotive. If u know anyone with 130k+ miles on a single hybrid setup with stock 2.0 heads (no machine work) and stock block still running strong or other hybrid builds with completely stock heads then u have me beat. I've watched him and his guys put motors together over a 5yr period and guess what none have been returned or rebuilt after being tuned by a competent tuner.

info posted in other threads u stumbled upon doesn't really make u correct my dude especially Eq tuning's info on the subject.

Lets just agree to disagree/thread
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Old 03-20-2013, 07:43 PM   #34
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Quote:
Originally Posted by IamWill View Post
Replaced the head gasket and my power issue was fixed and compression numbers are perfect. So to all you "derp motor garbage, buy $1800 block derppp" bless your hearts. Thanks to those who were helpful with actual advice and not complaining about "our cars are expensive". Yes they are if you are not mechanically inclined what so ever and pay a shop to do all of your work for you then obviously it will turn out to be expensive. So its not just "our cars", you can turn a Civic into a money pit if you get a shop to do everything for you. /End Rant/ peace.

So you come on here and ask for our advice and opinions about what you should do with your engine, we give you a bunch of information, advice and our opinions like you asked... and you changed the head gasket and it fixed your problem, congrats. Yet you disrespect us for giving you all of the info/advice etc... haha thanks pal, it's freaking numb skulls like you that piss us off. I truly understand why Uncle and Dom get pissed at people on here with no respect and knowledge.. have a good day..lmao.
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Old 03-22-2013, 03:26 PM   #35
3dbello
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Glad you got things sorted out and another WRX is up and running around. Hope it all lasts a long time for you. I do suggest getting a tune and a proper exhaust set up.
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Old 03-22-2013, 05:19 PM   #36
tec_41
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Originally Posted by Fir3Fighter View Post
So you come on here and ask for our advice and opinions about what you should do with your engine, we give you a bunch of information, advice and our opinions like you asked... and you changed the head gasket and it fixed your problem, congrats. Yet you disrespect us for giving you all of the info/advice etc... haha thanks pal, it's freaking numb skulls like you that piss us off. I truly understand why Uncle and Dom get pissed at people on here with no respect and knowledge.. have a good day..lmao.
More than half the responses in this thread are trying to scare him and prep him for a full rebuild. I don't blame him

Besides, he thanked the people who actually helped.
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Old 03-22-2013, 07:35 PM   #37
SR33
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Not one person was "trying" to scare him. Every single person was offering advice they thought would help. The ungrateful OP thumbed his nose at everyone who was just trying to help. Regardless of how those comments made him "feel", he had no right or reason to be an ass about any of it. Everything he said was him being a ass. He should have come back and reported to the community what happened so others could learn from it and thanked everyone for their time and attempt at helping. Instead, he decided to take to an ungrateful and immature position. There is no excuse for being rude and ungrateful for any reason.
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Old 03-22-2013, 07:39 PM   #38
Nikryj
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Originally Posted by 3dbello View Post
Glad you got things sorted out and another WRX is up and running around. Hope it all lasts a long time for you. I do suggest getting a tune and a proper exhaust set up.
This. I was surprised at how much more stable mine was with the correct tune.
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Old 03-24-2013, 02:01 AM   #39
3dbello
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This. I was surprised at how much more stable mine was with the correct tune.
Yes. Getting it tuned by a professional helps a lot and keeps your motor much safer, and running well in the long run. Especially with the extensive modifications. Like I said before I hope that your car lasts you a long time! Cheers!
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