|
|
|
|
Thread Tools | Display Modes |
03-13-2012, 10:19 PM | #1 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
hybrid motor good idea?to hybrid owners
I em considering doing a hybrid motor because i spun a bearing. So far I know I need the 2.5 sti block and I think I will use the oem sti head gaskets,bigger injections. i want to hear from some hybrid owners. Do you like it?Is it worth it?Have you had many problems with it?Also please tell your story and give me some advice.I read up on it and so far its either a good idea or a horrible one
* Registered users of the site do not see these ads.
|
03-13-2012, 10:29 PM | #2 |
Scooby Specialist
Member#: 212509
Join Date: May 2009
Chapter/Region:
NWIC
Location: marysville,WA
Vehicle:unde your hood makin your **** go faster |
its good if you do it properly and have the chambers on the heads opened up.
|
03-13-2012, 10:37 PM | #3 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
I have a trustworthy machanic that is going to be doing it. I want to know what i should do and what not to do so it doesnt get f***ed up
|
03-13-2012, 10:40 PM | #4 |
Scooby Specialist
Member#: 214121
Join Date: Jun 2009
Chapter/Region:
TXIC
Location: Sherman Texas
Vehicle:2005 604whp/543wtq fp3586 twinscroll |
there is a lot that goes along with it
it is a good idea for the power but can be hard on the wallet sti block weak spot is the pistons.. the wrx heads are fine but the cams are not close to the sti cams so you need a more aggressive cams setup to even make sti power the compression is the next issue you can do one of three things to lower the compression 1. thicker head gasket not the best way to do it 2. custom pistons better but not best 3. machine the heads for proper compression and it also removes any hot spots from what I have heard from big named engine builders a few out there are not lowering the compression on crazy builds the real aggressive cams take care of any high compression issues because of the overlap there are a lot of big hp hybrid builds out there with just a thick head gasket but it can be a gamble you will need at least a vf39 to keep up with the 2.5... a 20g or dom 3 would be a great turbo for a mild cam hybrid if you go any bigger than a vf39 you need 700 to 800+cc injectors and a bigger fuel pump here read up http://forums.nasioc.com/forums/show....php?t=1431376 Trying doing a little digging in the "Built Motor Discussion" forum: http://forums.nasioc.com/forums/show....php?t=1085359 http://forums.nasioc.com/forums/showthread.php?t=903873 http://forums.nasioc.com/forums/show....php?t=1942615 http://forums.nasioc.com/forums/show....php?t=1356918 http://forums.nasioc.com/forums/show....php?t=2002598 http://forums.nasioc.com/forums/show....php?t=1038227 http://forums.nasioc.com/forums/show....php?t=1082001 Last edited by shilohb; 03-13-2012 at 10:48 PM. |
03-13-2012, 10:43 PM | #5 |
Scooby Specialist
Member#: 85036
Join Date: Apr 2005
Chapter/Region:
MWSOC
Vehicle:2013 PBP sti ltd 05 LGT 35r 30psi..busted |
I had a hybrid with NON cut chambers and ~9.5:1 CR on 20-28 psi of boost for 35/40k with no problems (related to being a hybrid that is). I've also built many of them for others, and they have had no issues. Is it optimum to have your chambers cut, of course, have MANY (thousands) of builds been done with out it, also yes. It really comes down to money and convenience, I think at least. My .02c.
DK |
03-13-2012, 10:50 PM | #6 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
I dont want to make huge power.I would like to keep the stock tranny.Untill I swap to a 6spd.I would like to be around 400-450 at the crank.That would be enough for me
|
03-13-2012, 11:00 PM | #7 | |
Scooby Specialist
Member#: 214121
Join Date: Jun 2009
Chapter/Region:
TXIC
Location: Sherman Texas
Vehicle:2005 604whp/543wtq fp3586 twinscroll |
Quote:
|
|
03-13-2012, 11:06 PM | #8 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
thats no problem because the turbo went with the motor too hahaha. i already have a walbro 255 fuel pump.most likely i will buy a used turbo from someone on this forum to save some money
|
03-13-2012, 11:24 PM | #9 |
Scooby Specialist
Member#: 214121
Join Date: Jun 2009
Chapter/Region:
TXIC
Location: Sherman Texas
Vehicle:2005 604whp/543wtq fp3586 twinscroll |
I have a twinscroll 35r on my hybrid should be north of 550 whp
|
03-13-2012, 11:32 PM | #10 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
does this set up sound good sti block,oem sti head gaskets,650 injectors,VF39 or VF43,sti tmic,also a protune. em i missing anything?
|
03-13-2012, 11:34 PM | #11 |
Scooby Specialist
Member#: 214121
Join Date: Jun 2009
Chapter/Region:
TXIC
Location: Sherman Texas
Vehicle:2005 604whp/543wtq fp3586 twinscroll |
Make sure you use a good tuner if you keep it 9.5 -1
|
03-13-2012, 11:39 PM | #12 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
ok thank you for the advice
|
03-14-2012, 12:16 AM | #13 |
Scooby Specialist
Member#: 212509
Join Date: May 2009
Chapter/Region:
NWIC
Location: marysville,WA
Vehicle:unde your hood makin your **** go faster |
relocate the IAT sensor and get some two step colder brisk racing plugs
|
03-14-2012, 08:07 AM | #14 |
Scooby Newbie
Member#: 283967
Join Date: May 2011
|
defanetly do your research.
my hybrid build will be close to $20k by the time its done. don't forget the stock 5-speed is only meant to manage the stock power. 450hp will be a bit much for it. anything you upgrade will affect something else, I'm finding this out the hard way.-James
|
03-14-2012, 09:34 AM | #15 |
Scooby Newbie
Member#: 301671
Join Date: Nov 2011
Location: new york
Vehicle:2005 wrx |
that were i would like to be but i am trying to save as much money as i can.ill be fine with a VF39 or VF43 and the hybrid setup.That should be enough power for me.that should put me around 300whp correct?I was at 242 whp with the stock motor and turbo with stage 2
Last edited by wrxwagon0518; 03-14-2012 at 10:17 AM. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
pulling blown or who knows hybrid motor anyone want to help | SUBAWRECK | South West Impreza Club Forum -- SWIC | 11 | 05-24-2011 12:13 PM |
New Hybrid motor, What oil to use? | ryan_west06 | Built Motor Discussion | 25 | 03-30-2011 12:55 PM |
Pistons for STI hybrid motor? -and- How to acheive correct bearing clearances?? | radrider | Built Motor Discussion | 13 | 04-28-2008 03:48 PM |
Is it a good idea to switch to high mileage oil? | tEkkGOD | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 7 | 04-22-2004 11:33 PM |