G'day John. There's been quite a few things written on Turbo-ing a KR over the years, so the Archives could yield a good wastegate.
Something I have briefly thought about, but not researched much, is using a blow-off valve from some Doof-Doof Boy-Racer's Japanese Import. You know the ones where they go tearing off the line and there is that loud "Psssssst". After asking around and a brief google search, they come in different sizes and pressure's, although I am not sure how reliable they would be in an aviation environment. As I see it, you would only be using it to reduce manifold pressure if you INadvertently over-boost your engine and it would be used much like a warning light, dumping excessive pressure and giving you time to reduce your throttle position. So it isn't used. Another option is to use a small turbocharger that doesn't give you the performance to overboost your engine. Afterall, unless you run a CSU, your RPM will increase for a fixed MP as you climb due to the lower air density. IIRC my theory component... Just a thought. Cheers, Rob. Robin Wills Second Person, Pacific National KR-2 19-4594, Ser # N111 krvia...@bigpond.com
