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  1. ramsack

    BOV Flutter/Surge Clarification Help

    Compressor surge is the breakdown in the ability of the compressor to maintain pressure. Air starts flowing backwards across the compressor and mainly bends the blades. It's cavitation. Boat propellers can do the same thing, but it's visually noticeable because gas just instantly appears out...
  2. ramsack

    BOV Flutter/Surge Clarification Help

    I'm sure disagreements will follow at some point :)
  3. ramsack

    BOV Flutter/Surge Clarification Help

    Flutter happens when the BOV opens, pressure in the charge pipe drops enough so that the BOV closes, the pressure starts rising again because the turbo is still spinning, then BOV opens, and the process loops. It does NOT force air back across the compressor, which is what surge is. Surge is...
  4. ramsack

    BOV Flutter/Surge Clarification Help

    Surge is while making boost and has to do with the compressor and turbine mismatch that you mentioned, not letting off the throttle. Flutter when lifting the gas and opening the BOV is harmless.
  5. ramsack

    Leaking oil out of oil pressure sensor how do I stop it?

    Stock sensor or aftermarket?
  6. ramsack

    Starting issues - No / Doesn't / Won't Start - MERGED

    The ECU won't do a damn thing without a signal from the CAS. The cold start sequence is by default to spray all four injectors. They should still pulse. Warm start pulses all 4 once, then all 4 again for a shorter duration, then starts to sequentially fire them. They don't batch fire. The...
  7. ramsack

    Boost leak? fuel cut? compressor surge?

    By that logic you should be able to just throw in whatever injectors you want and the ECU should be able to compensate just fine in closed loop. The ECU is blind to anything done to the fuel system. The behavior you describe is meant to make small adjustments because conditions are varaible...
  8. ramsack

    Boost leak? fuel cut? compressor surge?

    No shit, Sherlock. All you said was "upgrade the fuel system," which could mean something as simple as rewiring the pump. The ECU is blind to what's going on in the fuel system. It just happily pulses the injectors while receiving no input back from the fuel system. I don't get why you...
  9. ramsack

    Boost leak? fuel cut? compressor surge?

    I didn't say that. Running lean more melts things than creates detonations.No. The ECU is blind to that.
  10. ramsack

    Boost leak? fuel cut? compressor surge?

    The MAF isn't saying anything about boost. It reads airflow. You could throw on a large turbo, run stock boost, and definitely hit fuel cut. People can even start hitting fuel cut by just putting on a 16g, exhaust, and intake without ever modifying boost pressure. You could have a boost leak...
  11. ramsack

    No bent valves!!!

    There are tolerances. Not every block and head is the same. Timing is approximate. If you mill the head or the block, timing will be off. When did I say anything about tension?
  12. ramsack

    Dumbest things you've heard a DSMer say? :)

    I don't get how people say they don't have time to do anything.
  13. ramsack

    This boost leak test has me stumped

    PCV valve. They're junk and leak boost. I've also had turbos let air past the oil seals.
  14. ramsack

    High oil and fuel pressure after start up

    Boost has nothing to do with oil pressure, only engine speed and temperature of the oil.
  15. ramsack

    FML I needed new paint but not like this...

    I was being sarcastic against the people who suggested that you should go out of your way to be nice to people who don't like you just because of your car and those people who would vandalize your car because they like some other class of car.
  16. ramsack

    High oil and fuel pressure after start up

    I explained the fuel pressure thing earlier. It needs to be exact. Oil pressure, no. It is just a something to monitor. Don't rely on one gauge. Electricians don't rely on the reading of one multimeter.
  17. ramsack

    High oil and fuel pressure after start up

    If it's cold, don't worry about high pressure during that time. In the manual it states that the stock oil filter is designed to hold 256 psi in the case of high pressure cold oil. The oil pressure is so high when it is cold because the pressure is measured before there are any real...
  18. ramsack

    High oil and fuel pressure after start up

    Anything can happen.
  19. ramsack

    High oil and fuel pressure after start up

    There's no such thing as a stock Walbro. Try different gauges to measure the fuel pressure, too. You could test if it's the return line by just hooking the return off the FPR to a long piece of thick enough hose and let it run into a gas can while looking at the fuel pressure. That will test...
  20. ramsack

    FML I needed new paint but not like this...

    Yeah, try to get in with a crowd so they don't come and vandalize your car. It's his fault, not the idiots who destroyed his hood.
  21. ramsack

    High oil and fuel pressure after start up

    At -20 inHg your fuel pressure should be ~35 psi, at 0 inHg, or 0 psi, it should be 43.5 psi, and with boost, it should rise 1 psi per 1 psi of boost. It's likely an overrun regulator.
  22. ramsack

    Push Button Start (merged 11.07)

    This is pretty awesome. As for using RFID to start it, I don't think I would be able to deal with that. I'd rather try to emulate something like the Prii have where the key just has to be in close proximity of the car.
  23. ramsack

    No bent valves!!!

    Very lucky. If you want to go above and beyond and have absolute accurate timing, you want adjustable cam gears and to degree them by measuring the degrees at which certain lift amounts occur. However, I don't know if these numbers are provided for stock cams... I always thought it would be...
  24. ramsack

    intake manifold

    Sheet metal is any metal in the form of a sheet.
  25. ramsack

    Tap broken off in exhaust manifold head stud hole...

    Pulling the head would cost more than towing... Keep trying.
  26. ramsack

    Tap broken off in exhaust manifold head stud hole...

    So he's going to tow his car to a welder? I bet that's free. I bet the welder charges nothing, too. There are no specific welding services. Maybe people like you know people who weld, but you can't just look up a welder in the yellow pages. I still wouldn't bother or trust welding it. Give...
  27. ramsack

    Boost leak? fuel cut? compressor surge?

    No, the MAF determines that.In what gear(s)?Sounds like fuel cut. Since you have mods that increase airflow, it's likely because of the mods, but still test for boost leaks.No, that's not the correct term. The MAF is fine. It's the computer that determines when to hit fuel...
  28. ramsack

    Tap broken off in exhaust manifold head stud hole...

    WTF You suggested he use an expensive tool he doesn't even have, with skills he doesn't even have, on a hole too deep that even a professional would likely say "use another method." Nice extrapolation. It's not hard to find a carbide or diamond-tipped bit, nor is it hard to find liquid CO2 or...
  29. ramsack

    Tap broken off in exhaust manifold head stud hole...

    So far I have helped out. I suggested a bit made of carbide or diamond to grind it out, or to freeze it and shatter it.
  30. ramsack

    Tap broken off in exhaust manifold head stud hole...

    You could also try getting it really cold by spraying something like liquid CO2 or liquid nitrogen on it and try shattering it. CO2 might not even be cold enough. Nitrogen, yes.
  31. ramsack

    Tap broken off in exhaust manifold head stud hole...

    Carbide or diamond is the only thing that is going to eat away at a tap. Even carbide would take forever, as it is even a slow process on a normal hard bolt.
  32. ramsack

    Oil Pressure drop on open throttle?

    Just to be clear, oil pressure is RPM-dependent, not throttle-dependent.
  33. ramsack

    My BISS is bubblin'

    It should be fixed, because leaks like that affect vacuum more than boost. These small leaks are so insignificant when it comes to boost that I completely doubt that the stock equipment (MAF + 8-bit ECU) could even measure that small of a leakage.
  34. ramsack

    What is the shifter weight for???

    Interesting.
  35. ramsack

    exhaust manifold studs

    See how they act in 15-20 years...
  36. ramsack

    What is the shifter weight for???

    It doesn't hit your lower radiator hose?
  37. ramsack

    exhaust manifold studs

    Unless it's in a vacuum, it's constantly exposed to something somewhat conductive.
  38. ramsack

    exhaust manifold studs

    Good for them. They're either complete dumbasses or they went the extra mile and have the holes lined with steel thread inserts. Stainless steel threaded into aluminum is a bad idea.
  39. ramsack

    exhaust manifold studs

    Actually, a lot of OEM exhaust pipes are stainless (yes, stainless DOES rust, just slower than plain steel). Manifolds being stainless is the only good example of cost, being a massive part. They don't use stainless hardware in aluminum because of galvanic corrosion.
  40. ramsack

    exhaust manifold studs

    Yeah, it's so simple, that's why so many auto makers have done this...not.
  41. ramsack

    exhaust manifold studs

    The head is aluminum, and stainless causes aluminum to corrode.
  42. ramsack

    What is the shifter weight for???

    It doesn't need to be removed to run a 6-bolt engine, just when you run a 1g head.
  43. ramsack

    exhaust manifold studs

    There's a reason why no OEMs use stainless studs or bolts with aluminum parts.
  44. ramsack

    DO I have a catalytic or a muffler?

    That picture is facing the front. It's the flex pipe you see near the transfer case, not a resiganator near the rear differential. :)
  45. ramsack

    DDM HID Kits

    I don't care if you didn't ask those questions. You were told what this will do, and aiming the lights down won't do jack shit. Good luck.
  46. ramsack

    DDM HID Kits

    It's amazing the reactions you get from children who think they know everything, and how they revolt and misspell when a person who actually has knowledge lets someone know that what they are doing is complete unsafe bullshit. There is a reason why lights go through tons of R&D and DOT testing...
  47. ramsack

    DDM HID Kits

    People just think information that doesn't coddle their emotions is information that's not helpful. I spew facts, not what people want to hear.
  48. ramsack

    DDM HID Kits

    Stock housings are designed for incandescent bulbs, not HIDs. It has nothing to do with being a projector. Your lights will blind people who are oncoming traffic and will blind yourself when it rains or snows.
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