I'm not sure what turbo the 1.6s came with, but you should be able to find a map somewhere.at 40psi, it's definitely not doing anything. It gets to a point where it's just blowing hot air, it stops flowing any more air and just starts heating the air it is flowing.here's the map for the VNT15 that comes on TDIs, which is what I have, I've actually calculated that it can take 21psi, plenty for me, but definitely more than the 17psi everyone says.but definitely not enough for you, but will give an idea of a small OE turbo and how little it really flows.map is in kg/min not lb/min, so flow looks tiny, but it's actually about double what the map says.
United States Patent 5218822Link to this page:http://www.freepatentsonline.com/5218822.htmlAbstract:The compressor for a turbocharger includes an assist system to provide a power stream of a driving fluid such as air to act on the impeller of the compressor until the driving power of the exhaust gases from an internal combustion engine are sufficient to drive the impeller. The compressor includes a housing forming a compression chamber in which the impeller is rotatably disposed. The impeller has a floor with a plurality of blades projecting from the floor. A plenum surrounds the housing and is connected to a source of pressurized air for supplying air to the compression chamber to drive the impeller. An aperture is provided through the housing for each blade and communicates the air from the plenum to the compression chamber and against the blades. The axis of the aperture is coincident with a line extending from the lower outer radial edge of the blade adjacent the floor to the point at which the air jet from the aperture impinges upon the next successive blade
Blake! Good to see you still around! So are you in NY for good or back in OH? (looking at your profile)I cant help but giggle like a schoolgirl looking at pics of your setup. Maybe try a Holset H1C turbine housing on your current compressor housing? Dunno if they'd fit together, but the H1C I think is a little smaller still, plus it's non-wastegated. I've looked and looked at compressor maps until I'm blue in the face and it's hard to find something that works for M-TDI's in the high hp/boost range. I still plan on the super/turbo combo on mine eventually. But I've got so much other crap going on right now I have no time to wrench and no money to get parts!!!From the multitude of blown T3's you have had, do you happen to have any of the wastegate "valves" from any of those? Mine is fokked. Good luck!Brendan
I'd finish the intake and exhaust manifolds now, they'll help the performance greatly, given they are engineered right. You might also consider a 4" DP. Or I'd look into pump work, make that *** rev to 6000rpm, and get some more dynamic advance, you'll be laughin. If your just gonna give up on that turbo (which I don't think you should its about perfect for what you want to do in my opinion) than let me know what you want for it!