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Old 03-21-2009, 04:32 PM   #1
04subaroo
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Default lookin to start a hybrid build maybe

start off by saying sorry if this is already on here and most of the hybrid builds have different mods so i figured i just start one with my mods

my mods are full exhaust header up pipe TBE and Fender CA and a zoom stage one clutch

my questions are i have a 2004 wrx with blown rings or sumthin along those lines i have the chance to get a 06 sti long block. would it be better to run the sti motor(my concern is trans). or build a hybrid motor? i kinda wanna build the hybrid motor. i know i need sti HG water pump or will the wrx one work (its new). timing belt and tensioner or will the WRX one work (new also). as for turbo i wanted to run the stock tdo4 with maybe a pound or 2 over stock boost and a tune by 555.

anything else i may need advice anything to help me out a little here thanks James
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Old 03-21-2009, 04:56 PM   #2
WrXtaCy2003
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Default

regardless of it being a hybrid or a full sti longblock, the 2.5 bottom end is going to make a lot more torque, and it is only a matter of time when the 5 speed goes. A lot has to do with your driving style too! If you can get an sti longblock, with all the harnesses, ecu, and dash for a good deal (and can afford it) then that is the better route.

P.S. I hate to be the one saying this, but you need to search, this has been covered and done so many times.

DK
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Old 03-21-2009, 05:05 PM   #3
04subaroo
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y dash? and ya im sorry i spent like 2 hours reading and what not but most of the other poster were like i wanna make 300 400 500 hp im not lookin to do that so i figured id post one
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Old 03-21-2009, 05:26 PM   #4
JSarv
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Hybrids tend to be problematic.. Not a bad Idea but personally I would pickup some used 257 heads and just do the longblock....

-Jerod
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Old 03-21-2009, 05:52 PM   #5
STI_KLR
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If you do the full LB, will the WRX harness work? Or by running the 257 heads do you automatically need the STI harness?
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Old 03-21-2009, 08:02 PM   #6
JSarv
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I think there are a few differences. mainly AVCS... I would just pickup a top engine harness either new or used and then do the couple of wires for the AVCS from the enginebay to the ecu... I think there may also be a company that makes a harness or conversion for this...

-jerod
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Old 03-21-2009, 08:11 PM   #7
STI_KLR
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Ah, good info. What if I don't want to run AVCS? I know you have to plug the holes on the intake cams.
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Old 03-21-2009, 08:15 PM   #8
JSarv
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No biggy then - you could probably run a 2.0 ecu as well then...


-Jerod
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Old 03-21-2009, 09:01 PM   #9
STI_KLR
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Sounds good.

After doing more research, all you need to do is:
  • Plug holes on intake cams
  • Use WRX cam seals
  • Run oil feed lines to AVCS solenoids
  • Drill &Tap location for WRX cam sensor on EJ257

Am I missing anything?
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Old 03-21-2009, 09:05 PM   #10
JSarv
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Sounds about right... I'm not 100% positive though..

I'd consider running 264 non avcs cams - kelford or such... I'd also run a td06-20g with an 8cm2 turbine housing.

You'll have early boost - a good amount of power and those cams will really compliment it...

-Jerod
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Old 03-21-2009, 09:35 PM   #11
STI_KLR
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Right now, I'm trying to save money wherever possible. I'm not making a crazy build, similar to the OP. Just a reliable DD re-using my DB small 16g.
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Old 03-22-2009, 12:24 AM   #12
JSarv
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Why not stick with the 205? It has more potential than alot give it credit for..


-Jerod
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Old 03-22-2009, 12:36 AM   #13
STI_KLR
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Honestly, I don't feel like rebuilding it. I don't have the time to take the motor apart, and start from scratch. I'm on a budget and I have time constraints. Plus, getting the 257 now helps with my plans for the future when I have more time and money to make a beast. But for now, a stockish STI SB/LB or Hybrid build will do
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Old 03-22-2009, 01:17 PM   #14
04subaroo
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if i do the long block will my water pump and all the accessory's work on the sti or do i need "sti" accessorys
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Old 03-22-2009, 01:40 PM   #15
JSarv
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There were some revisions - but yes I do think they will... I know PS pump - ac - alternator will forsure.


-Jerod
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Old 03-23-2009, 01:26 AM   #16
04subaroo
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ok thanks
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Old 03-23-2009, 07:02 AM   #17
LiquidForce
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Quote:
Originally Posted by STI_KLR View Post
Sounds good.

After doing more research, all you need to do is:
  • Plug holes on intake cams
  • Use WRX cam seals
  • Run oil feed lines to AVCS solenoids
  • Drill &Tap location for WRX cam sensor on EJ257

Am I missing anything?


If you get a long block all you have to do is [*]Drill &Tap location for WRX cam sensor on EJ257


If you have the avcs oil lines hooked up you shouldn't block holes on the intake cams. I know for sure the intake cam gear on the 04 sti has a point for the cam sensor to pick up a signal from. Other years may have it as well but I always use an 04 gear when I swap in a long block.
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Old 03-23-2009, 09:54 PM   #18
wrxdrivr04
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Default hybrid

well i just finished up my hybrid build this weekend, i have to say so far so good, my mod list is a bit more than what you have but, i have to say it was good build for my budget i spent around 3200, im running a map for my utec delta till breakin is over then its down to turbo xs for the tuning!! so in all if no problems occur i will have about 3700 buck in the whole build, i have about 150 miles on it so far and i cant complain one bit!!

modd list b4 hybrid swap

Megan racing uppipe and header
sr*s turbo back
greddy profect spec B Electronic boost controller
FP Evo III 16g
255lhp
Utec delta
Spec stage 2 clutch kit

Modds for hybrid swap

ej257 shortblock
Modd Wrx injectors by witch hunter
TGV deletes (done myself)
Group-n sti motor mounts

Also i did all my Labor myself which saved me about 2000 bucks but it was well worth it!!!
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Old 03-24-2009, 01:40 PM   #19
04subaroo
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sweet well my car is for sale on ebay it ends sonday if it dont sell i am gunna start the build the only problem is its gotta be done by april 20 so i can go to school if it sells imma go buy some cheap good on gas car. been look at 2003 SER spec v any1 hear anything about them
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Old 03-26-2009, 02:29 AM   #20
04subaroo
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nothing on the spec v ???
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