Jump to content
Please check your junk folder for registration emails ×

DacerX

General Member
  • Posts

    4,915
  • Joined

  • Last visited

  • Days Won

    1

Everything posted by DacerX

  1. OK then So first if you are wanting to go Quad AVCS you have 2 options. Legacy 2004- turbo or V11 STI- and thats it. So second why go to Quad AVCS over V7 dual AVCS? Well, basically the overlap is the major difference. Dual AVCS allows for 40 degrees of advance on the Intake. Which gives a total variable overlap of 0 to 40 degrees. Quad AVCS allows only 30 degrees on Intake, to combine with 40 degrees of exhaust retard. Combined the two allows for a total overlap of -17 degrees (no overlap) to 53 degree of overlap. Not only do you get more overlap, but for a given overlap you also have the ability to move the overall cam timing. In simple terms it increases low down torque and quicker spool. This is one of the main reasons why the LGT and the V11 feel very responsive. And why subaru are now using this type of design on the new FA and FB and the EZ30 have it, because it works and is good. So now to the technical information: So in the legacys there are 2 types of heads that i have been able to find that have different casting marks on them, U20 and W20. The size of the ports is slightly different with the W20 being bigger but being micro compared to V11 heads. Now some parts are interchangable such as cams, springs and retainers. But the one thing that is not is valves, sadly at this stage no one makes aftermarket valves for LGT heads and this is one of the main reasons more Legacy owners in Australia are going to V11 over working on the LGT heads that they have on the stock engine as well as going to a later EJ207 if they get a complete engine. The later EJ207 is amazing and can handle alot more power than EJ engines of the old days. So why use LGT heads at all? Well because of the supply of legacys that we have in this country is huge and they are being wreaked all the time as well as engines blow and what most people do is get a new longblock so heads are available. So for legacy owners this is good news if you wanting to get more power out of your car. just need to get STI cams from a V11. So if you have a legacy your ecu should be able to be adjusted for these upgrades, or you need a Link/Vipec/Haltech. So to recap. Yes LGT heads can have interchangable parts with V11. Porting of LGT heads is a must if you are doing this. V11 valves are not the same. There are a few different cams so measure what you have. I will be putting more info when my parts come and i start building them as parts arrive.
  2. i will if anything if anyone is interested, but so far no ones been that interested in this kinda thing
  3. I know the guy and have been in contact, and have now all the info i need. also know his tuner in sydney as well. This wasnt that best place to post
  4. Would be just quicker and easier to do a daughter board or a plugin link.......... dont see much a an advantage other than a technical exercise of can it be done...
  5. Is anyone using these heads in a non legacy application or upgraded the valve train in them (2004-Legacy turbo heads)? I'm trying to find valves, springs, cams, retainers for them but the internet is big and information is small. The aussies seem to just be boosting the factory motors to the max with re-flashed ecus and not changing anything and then hitting issues at around the 250kw mark. Im doing a forged bottom end with these heads but finding stronger components or finding information about if they are interchangeable with V11 is non existent. At the moment it looks like everything is custom unless i can get sizing from V11 sti heads which done just sit on peoples shelves.
  6. just old wrx ones, doesnt look like mine, shim over so not ra
  7. Can you put me and Tim down as confirmed but not paid
  8. better single turbo it to make sure its ok then....
  9. I just got a roller. Was easy
  10. Strong for subaru will do a second had set with springs for way way less that that
  11. Yeah im just going to replace it, its so bad. on a hot day errrr not cool at all. And its stained all the carpet as well. So by by rear carpet
  12. got gearbox oil all throw the back of my car and now it stinks had to strip out all carpet out and clean it and it still stinks. So time to find new carpet.....ya
  13. yeah i had to cert when i removed my airbag.
  14. Yeah i found that my tank is 60L when we went to feilding. Was running it to on E and getting about 53L into it. Was impressed in a imprezza
  15. kind of reminded me of when they did police cars.
  16. Honestly, if you arent sure on how to change subframes and the basics you need to do something like this i wouldnt do it yet.
  17. you would have to change to a turbo subframe and get a exhaust off a 250t as well....
  18. NA headers dont really exist, and just bolting on a wrx manifold wont do alot really. unless you have some way to tune it for the increased flow. the ECU will just do its best
  19. not really unless you want to run a tuneable ecu to make the most of what you have, even then your limited.
  20. plug it up put it on the wind wiper and zip tie it and go to a drive.
  21. stick a gauge on and check it again for now.
  22. complete unknown, the cost of doing that is almost as much as a new engine. Also there maybe not enough of the bore to make it that size, and i think that rods are different length as well. The only thing i know about the ej15 is the crank would be good if you wanted to do a destroker on a ej20 and have it rev really high for ****s and giggles. Why do you wnt to do this 1.5T so badly? What gains do you feel it has over a ej20 thats designed for turbos and is all setup? Also there is no factory ecu that can run this setup so your looking at a wire in link which is like 2k on its own with sensors..... Im not trying to burst your bubble but im trying to understand this reasoning
  23. you will need to complete rewire the car for the additional sensors, you will also need to make oil and water lines off the heads and a oil return to the sump.... the list is endless with doing a conversion on something like this. Also with it being a ej15 in a bugeye im guessing that its 2wd? so is the box going to like the addition torque, or the clutch, or if its an auto will you have conflicting issues with the TCU? is the TCU and ECU one unit? Factory rods and pistons arent going to cut it ethier and im pretty sure that ej20 have a different stroke and bore size so swapping those isnt a go either. There is a reason why people are telling you that this is a path not walked for a reason and its not to get you down and angry. Maybe people have done NA to turbo swaps before in subarus, just not this way and with a newer model impreza.
  • Who's Online   0 Members, 0 Anonymous, 238 Guests (See full list)

    • There are no registered users currently online
×
×
  • Create New...