Build 2.0 or go with 2.5 shortblock - Page 2 - Subaru WRX Forum
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#16 Old 07-05-2009, 10:45 PM
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Very true, it is not whp that kills the tranny but the torque and shock load. Also, driving like an *** and launching/drag racing all over the place will kill a 5-speed pretty quick too. It is all in how you drive and slip the clutch.
yeah I hear that. Im going to throw in a set of RA gears also. Well looks like I will just build this 2.0, and I think I might go with the fp green, and if I ever go the 2.5 way it will get the gt35r treatment.
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#17 Old 07-06-2009, 12:11 AM
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Contact these guys. DS1 Motorsports and Development - Chicago Illinois Subaru WRX & STi Performance Specialists - Home Ask them about their transmission. Its a bit better (actually IMHO ALOT) than the RA gears. They have a stock ratio 1-5 replacment that is in house built and tested. See what they have to offer if nothing else.

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#18 Old 07-06-2009, 02:27 PM
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Quote:
Originally Posted by iboost26 View Post
yeah I hear that. Im going to throw in a set of RA gears also. Well looks like I will just build this 2.0, and I think I might go with the fp green, and if I ever go the 2.5 way it will get the gt35r treatment.
+1 ...its a great setup...i do suggest you add some cams they really open up the top-end which is where the Green likes to play lol...and have you decided who's going to be doing the build or are you planning on doing it yourself?

FP GT35R MoTeC M800 AndrewTech PPG'd Wagon - 513AWHP
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#19 Old 07-06-2009, 02:51 PM
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The low end drivability with the extra tq makes the 2.5L choice a no brainer to me. Get a 2.5 and build it. Lots of tq and faster spool.

My name is Ken and I am a HP Junkie.
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#20 Old 07-07-2009, 11:07 PM
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any other inputs ?
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#21 Old 07-08-2009, 08:25 PM
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also not too long after I installed cobb the pos check engine light came on, I forgot the code but it was the 1st bank lean which Im guessing is the a/f sensor
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#22 Old 07-09-2009, 11:13 PM
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bumpp
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#23 Old 07-13-2009, 12:55 AM
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EJ207. EJ207. EJ207. If you plan on doing something serious like going stage 4 on your EJ205, you reeally might want to look into EJ207s instead, youll probably spend about the same and get all the glory of the EJ207. Make your dream engine an EJ207 Spec C.
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#24 Old 07-14-2009, 03:07 PM
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Originally Posted by relliMmoT View Post
EJ207. EJ207. EJ207. If you plan on doing something serious like going stage 4 on your EJ205, you reeally might want to look into EJ207s instead, youll probably spend about the same and get all the glory of the EJ207. Make your dream engine an EJ207 Spec C.
ive never even heard of that
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#25 Old 07-14-2009, 03:49 PM
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Easier said then done. 207 is a JDM sti engine and you need to swap out the ECU and wiring harness. It'd be a project and a half.
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#26 Old 07-14-2009, 04:49 PM
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Easier said then done. 207 is a JDM sti engine and you need to swap out the ECU and wiring harness. It'd be a project and a half.
You can swap the EJ207 shortblock just like swapping the EJ257 shortblock as long as you aren't trying to use the AVCS heads.

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#27 Old 07-14-2009, 05:10 PM
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Thats what i was planning on doing...but I found its way cheaper to sleeve the EJ205 which makes the block stronger anyway

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#28 Old 07-14-2009, 11:32 PM
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Will the stock 2.5 shortblock support 400whp without throwing a rod thru the block? All I want is 400hp like my srt4 did and i'll be happier then a tornado in a trailer park
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#29 Old 07-14-2009, 11:46 PM
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If you go with the STI shortblock its best to go ahead and do all that since the engine will be apart anyways. And with the right parts and proper maintenance you should be fine.

Joshua
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#30 Old 07-14-2009, 11:57 PM
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If you go with the STI shortblock its best to go ahead and do all that since the engine will be apart anyways. And with the right parts and proper maintenance you should be fine.
Yeah, I agree. But someone cut my money tree down.. !Cry!
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