HP76 Compressor Map

JST4FN · Tweet this Post! #1 (**permalink**) 11-20-2009, 07:13 AM

I noticed in the 09 Catalog there is a compressor map for an HP76 wheel. Is this map correct ? I'm looking at the GTK1000 which list this wheel.

Thanks Mike

Robert · Tweet this Post! #2 (**permalink**) 11-23-2009, 09:32 PM

That should be correct yes. Only thing is the GT-K 1000 uses a ported compressor shroud so the map is actually going to be wider with the GT-K compressor housing.

JST4FN · Tweet this Post! #3 (**permalink**) 11-23-2009, 10:07 PM

Wider towards the left and right? My biggest issue is when I plot out the compressor map it goes just past the 70 percent marker. I need more effeciency on the right.

Robert · Tweet this Post! #4 (**permalink**) 11-24-2009, 09:36 AM

Quote:

Originally Posted by JST4FN

Wider towards the left and right? My biggest issue is when I plot out the compressor map it goes just past the 70 percent marker. I need more effeciency on the right.

It would mostly be wider on the left and push the surge line left a bit. There will be some widening on the right as when the turbo is at peak pressure some air will still be bypassing the inducer and being directed at the major via the port shrouding but it's not going to be as drastic as the left side widening.