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Showing content with the highest reputation on 10/08/18 in all areas

  1. Also what inter cooler size and what brand and AR exhaust housing? Plox: 280kW ATW @ 28PSI - 492 NM Torque Model: 92 RS Legacy BC5 Displacement: 2.0l Mods: gtx3071 gen 1 with mamba twin scroll 0.82 AR housing/ 880cc Side Feeds / bl/bp ts headers with twist adapter / 3Inch with 2 x coby & muffler / 550x230x65 FMIC / vipec i88 / post IC 50/50 water/meth injection / 272 Franklin reground cams / adjustable cam gears Fuel: BP 98 Top line is 28psi with water meth Middle is 24ish psi no water meth Dashed lines are old single scroll gt3076 0.63 housing 23psi no water meth
    4 points
  2. Plox: 280kW ATW @ 28PSI - 492 NM Torque Model: 92 RS Legacy BC5 Displacement: 2.0l Mods: gtx3071 gen 1 with mamba twin scroll 0.82 AR housing/ 880cc Side Feeds / bl/bp ts headers with twist adapter / 3Inch with 2 x coby & muffler / 550x230x65 FMIC / vipec i88 / post IC 50/50 water/meth injection / 272 Franklin reground cams / adjustable cam gears Fuel: BP 98 Top line is 28psi with water meth Middle is 24ish psi no water meth Dashed lines are old single scroll gt3076 0.63 housing 23psi no water meth Couldn't pull any more than 280kw, torque drops off significantly, next to no top end gain adding boost and timing. Injectors weren't the limiting factor (yet), appears there is a airflow restriction. Pressure testing results (on high boost): Exhaust port egbp 40psi pre turbo but post wastegate egbp 35psi post turbo egbp 5psi turbo outlet/pre intercooler 34psi final boost/manifold pressure 28psi Back to back core vs no core @ 40% open loop wastegate duty test showed 22psi with core 26psi without (so ~4psi of intake pressure drop is the IC, this added 20 degrees of IAT even with WM and made the car run mid 10 afr rather than the normal mid 11, and seemed to bring the boost threshold 200rpm earlier) I've been "internet" advised IC is to thin and causing a restriction. Any opinions on this? I have a suspicion the cams aren't what they should be, are a bad grind, or are dialed in wrong. Any opinions on what could be the restriction or tests to suggest?
    3 points
  3. New pitch stop mount is in. Has made a hell of alot of difference, with zero harshness thanks to it having hardened rubber bushes rather than the usual poly. No more repeated rocking when coming on/off throttle at low revs is a massive bonus. Turns out the original was in pretty bad shape, the small side bush was flopping around all over the place.
    3 points
  4. Replaced serpentine belt, idler pulley and tensioner. Took me maybe half an hour working in the dark. With that said it took me another half an hour to remove and reinstall the damned battery...
    1 point
  5. Just buy lots of chicken.. stay all day
    1 point
  6. Aftermarket equal length bought from a rally car in Christchurch, custom made down there by engineering shop but nothing special really 1.5 inch runners I believe, 4-1 style 2.5 inch up-pipe. I have been told to buy a late model legacy twinscroll headers they are cheap and great upgrade for twinscroll setup, I'm still single scroll. Racefab quoted me 3k for headers only, twin scroll type, so didn't bother. I don't think the OEM setup u going for will restrict it that much so depending on turbo can't see why u can't hit ur number. Intercooler and radiator is just cheap type from redline performance still use OEM fans and shroud never had overheating issues, and exhaust is 0.63, yep its a big limiter on power maybe. Who tuned ur car?
    1 point
  7. It's one of the ITL cores, and it seems to cools great. IATs are better than the old (same size unknown brand) core. The persons who said the IC was to thin - his theory was that the flow area was to small and is causing a restriction, and said he and mates had run into similar power restrictions which turned out to be the thin IC core. Yea 0.72 TS is smaller than 0.86 SS, although I believe TS and SS housing sizes aren't directly comparable. The 0.72 TS housing probably more similar to a 0.63 SS housing. I'm thinking the similar around heads, some avcs heads (either single or twin) could help bring the boost on earlier as well as flow. I'm considering bp/bl heads and adding sti or aftermarket cams, and some decent springs. But I need to test another IC core first, and then pull the heads off for a look and measure up the current cams. I was hoping for better spool going TS and at least 300kw. I wouldn't care about the power figure if it had a punchy early-mid range, but at the moment is fairly laggy as well as torque tapping off. Thankfully with the 6sp once you are in the power it stays there.
    1 point
  8. Any giveaways to determine a forged from a monoblock set? Or will forged be printed somewhere on the wheel? Edit: I should learn to read properly - your last sentence answers my question lol
    1 point
  9. Bought a set of 17x8 monoblock versions for $700 last year with decent tires, probably got a bit of a deal though, they come in both forged and monoblock types of construction from what I know with the earlier forged ones being worth more, both are pretty light, they have the construction type printed on them.
    1 point
  10. They are v3 sti heads with 272 franklin cams, and i think upgraded springs but cannot confirm as I brought the long block complete. Should be able to flow more based on other people results, but heads restricting the flow is my suspicion.
    1 point
  11. If you'd like I can find out a price for a custom one for you?
    1 point
  12. Cool, might be an hour late how long will you be at Gerrys?
    1 point


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