Nitrous?

[macka]

Michael Zoche is trying this for a 2 stroke, radial diesel engine for aircraft use. They need the turbos spooled before start, or it will not run.
http://www.zoche.de/ He started coming to Oshkosh with a mockup engine more than 10 (15?) years back, saying it will be flying "next year". Don't know why there is nothing flying yet.

probably because they can't figure out how to make a secondary ignition system on it, or get it going in flight, if it stalls.

[jtanguay]

thats what im saying. the guy i know used it to lite the huge turbos. it probably isnt that easy spooling 8 turbos on one engine... and im talking about using the compressed air right off the line, just to help spool the turbos. a bigger turbo would add more lag time.. i hate turbo lag.

do you honestly have that much lag with the GT17?  i'd think that turbo would spool pretty damn quick... especially with your opened up exhaust system.

i'd personally like to see a magnetic bearing turbo.  just takes a bit of juice to start it spooling    and the friction is very acceptable... probably less than using oil.  any energy created by that friction could probably be fed right back in to reduce the losses? hmmm

[jtanguay]

Michael Zoche is trying this for a 2 stroke, radial diesel engine for aircraft use. They need the turbos spooled before start, or it will not run.
http://www.zoche.de/ He started coming to Oshkosh with a mockup engine more than 10 (15?) years back, saying it will be flying "next year". Don't know why there is nothing flying yet.

probably because they can't figure out how to make a secondary ignition system on it, or get it going in flight, if it stalls.

thats the easy part... use quick start to get it going, and then switch over.  some old Russian trucks were like that.  start them on gasoline and switch over to diesel.

[Rabbit on Roids]

thats what im saying. the guy i know used it to lite the huge turbos. it probably isnt that easy spooling 8 turbos on one engine... and im talking about using the compressed air right off the line, just to help spool the turbos. a bigger turbo would add more lag time.. i hate turbo lag.

do you honestly have that much lag with the GT17?  i'd think that turbo would spool pretty damn quick... especially with your opened up exhaust system.

i'd personally like to see a magnetic bearing turbo.  just takes a bit of juice to start it spooling    and the friction is very acceptable... probably less than using oil.  any energy created by that friction could probably be fed right back in to reduce the losses? hmmm

yea, i got turbo lag. my turbo isnt very healthy. it only makes about 22 psi usually. it sucks now. it used to make 30+ psi before you could think when i first put the turbo on. but its not balanced anymore and the seals are screwed. and has anyone ever looked at how much a new center section is for one of these vnts? really expensive, compared to what i would be spending for a way better turbo, or even a different bigger vnt.

[jtanguay]

thats what im saying. the guy i know used it to lite the huge turbos. it probably isnt that easy spooling 8 turbos on one engine... and im talking about using the compressed air right off the line, just to help spool the turbos. a bigger turbo would add more lag time.. i hate turbo lag.

do you honestly have that much lag with the GT17?  i'd think that turbo would spool pretty damn quick... especially with your opened up exhaust system.

i'd personally like to see a magnetic bearing turbo.  just takes a bit of juice to start it spooling    and the friction is very acceptable... probably less than using oil.  any energy created by that friction could probably be fed right back in to reduce the losses? hmmm

yea, i got turbo lag. my turbo isnt very healthy. it only makes about 22 psi usually. it sucks now. it used to make 30+ psi before you could think when i first put the turbo on. but its not balanced anymore and the seals are screwed. and has anyone ever looked at how much a new center section is for one of these vnts? really expensive, compared to what i would be spending for a way better turbo, or even a different bigger vnt.

sounds like you need to try out one of those vnt20's on the diesel jeeps.

[Rabbit on Roids]

i was looking at those. they have pretty ginormous exhaust housings tho.

[Zeitgeist]

I have a Powershot 2000 propane kit installed on my Mercedes, and it adds approximately 20hp.  It's progressively set to add propane relative to boost levels, so it's fairly efficient.  You can really feel it when the boost/fuel kicks in.  I also have a Zex nitrous kit that I've never installed.  I've been hoping that it can be used to introduce additional "air" under WOT right off idle, so as to eliminate turbo lag.