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peevee last won the day on January 12

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About peevee

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    Won't Leave!

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    SR22TN now, M20K rocket and m20k before

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  1. I'd be lying if I told you turbos weren't more headache and expense but you couldn't give me a NA airplane. I won't go back. Big reason I haven't gone experimental. I'd really like to fly one of those extra 400s with the liquid cooled engine. People really like those. I also think what they charge to overhaul aviation turbos is highway robbery. Our tat turbos are just t04s like you'd use in a car made by Garret or airesearch and rebranded. You can probably buy them new for 2k for the pair. Oh well.
  2. If you do your own oil changes you can inspect all that pretty well. Mouse milk the wastegate actuator to lube it and the vband clamp and look for cracks. This vband clamps really scare the shit out of me. No one needs a 1500 degree blowtorch under the cowl. Lower cowl on the rocket is kind of a bear to do by yourself and probably even more so with the 4 blade I bet.
  3. Yeah me too and I slipped somehow and burned myself bad enough to blister. And that's after a lengthy low power setting descent.
  4. Main overhauled our turbos for 5 amu and then again 2 weeks later for 2.7amu and then the wastegates for an unknown amu, I think 2ish. I've spent enough for both of us. I didn't read Erik's issue closely, it sounded like the bearing slop so I doubt it gave much warning just a gradual wobble. Like I said Gary said that oil seal is a steel sleeve and doesn't just leak like people think. Throw some mouse milk on your waste gate too, they can get sticky.
  5. Mine will still but the shit out of me. Our tit runs 1500-1650 depending how lean you run it. NA I never paid attention to the actual number just the peak so I honestly don't know how hot it runs. I assume close to that?
  6. That surprises me. The short exhaust on the rocket meant a perpetual sooty belly on ours.
  7. You could call Gary main at main turbo and he'd be happy to talk your ear off. My limited undetanding is that the main bearing is steel and usually doesn't wear out or leak unless something happens like the turbine housing makes contact with the turbine wheel or crud built up under it or something else unbalances the turbo causing it to wobble and wear against the bearing. That's kind of how Gary explained it or what I remember of it. The turbine side take a lot more wear than I expected compared to a car. Gary seemed to think it was a side effect of the mixture not being perfect like a car being managed by the ecu (my words not his and again my crappy memory)
  8. Sign of a failing check valve is as noted by another poster, oily residue inside the exhaust and a potential small drip or a large drip if it completely lets go. Run your finger around in there. Our rocket ran pretty clean with a light gray soot and it was easy to tell. The exhaust is so short on the rocket I'd expect to see an increase in greasy residue on the belly also. There are two on most. From the oil galley down into the turbo and from the turbo up to the scavenge pump. I suspect the bottom one would be the more problematic of the two ad it would backflow from the scavenge pump. If the bottom goes oil will fill the turbo and work its way where it shouldn't and out the exhaust eventually. Otherwise you might just see some smoke on start up. You can remove them, put a rubber hose on the outlet and fill with solvent and let it sit to see if it leaks. Also on the tat setup they have to be orentated correctly with the hinge at the top.
  9. There is, but that's reading the exhaust temp and since the turbos wye together into the intake no disparity was noted between left and right the engine ran basically normally, aside from the massive amounts of metal coursing through its veins. It's not like the mixture went way rich dropping the tit.
  10. Yes and no. In our case the turbo ingested something after overhaul. The problem manifested itself about 8 or 10 hours later when the main bearing failed and it plastered the plane with oil and smoke when I went to get fuel for a trip the next day. There was no noise or indication anything was wrong. Had that happened in flight it would have probably lost the crankcase worth of oil pretty quickly with no indication until you started to see a drop in oil pressure. End result could be the same if the engine seized before you found an airport. I had flown the airplane to 17,5 the day before and there was no problem maintaining power and no oil in or dripping from the exhaust before I went for fuel. I always check for a failed check valve and the security of the vband clamps in preflight We overhauled our turbos at about 1700 hours and main turbo thought they were pretty long in the tooth. It's not just the bearings you have to worry about, the turbine blades get gunked up and blasted and eroded by exhaust gasses too.
  11. On the tornado alley twin setup I have had one turbo completely fail. You don't notice it. Turbo 2 can maintain sea level power to the high teens or better. We didn't know anything was amiss until the bearing failed and dumped a bunch of oil out the exhaust.
  12. peevee

    Holy Yikes!

    Glad you're well Erik. I'm really interested to find out what caused your issue as I'm sure everyone else here is as well. What happens when a io520/550 cam gear fails? Anyone know the symptoms?
  13. Thanks for making the connection. Sold! The items were great for us and our Mooney. I'm sure Steve will find them helpful.

  14. Fine. F all y'all Later.
  15. Parachute is the least of my concerns cost wise, lol Everything is expensive, alt 2 quit, there goes 750 plus labor. Hoses, seat belt inflators etc etc