Supercharger kit for sale $$$$ NEW PRICE 4500.00 $$$$
06-21-2009, 10:15 AM
#16
Three Wheelin'
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Location: In the boatyard installing the mast and engine, we don't need a crane, we harness the mesquito's! Yeah!
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For those who are interested... and have the funds right now
https://rennlist.com/forums/928-foru...-projects.html
Looks like a smoking deal!
https://rennlist.com/forums/928-foru...-projects.html
Looks like a smoking deal!
06-21-2009, 01:45 PM
#18
Rocket Pilot
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Got the PM and responded. I will give this another day or two to see if anyone can beat James (potsiewebber) offer. And no, I wont disclose his offer. If nothing better comes in it will be his.
06-22-2009, 05:45 PM
#21
Rocket Pilot
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Garrett GT 40. worried it may be a little small for 650hp but the 42 would have been too big. We'll see how it works out on the street, On paper it looks pretty good . I tell ya I 'd like to scrap this whole single project and go twins but too far in now!
06-22-2009, 08:14 PM
#22
Rocket Pilot
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13 psi. to start. I know that would make your brother cringe, but it can be done. These engines are very stout, as I am sure you very well know. Herr Kuhn's(am I allowed to say that?) is on the very bottom of boost for his machine, so much more there! I was contemplating DR's system as it is very, very well executed as are all his fabrications, but I have a turbo itch for the past year, and I absolutely must scratch it!
06-22-2009, 08:21 PM
#23
Rocket Pilot
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Oh, BTW, I was contemplating GT30's when I was considering twins, but on the maps it looks like they would choke before 5k on our engines. I still like my upper RPM's 
06-22-2009, 08:33 PM
#24
Race Director
06-22-2009, 09:13 PM
#25
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06-23-2009, 04:37 AM
#26
Drifting
GT3076Rs will flow more than that. I'm getting about 550hp out of one with the .86 hotside. That is at 28 psi though and it's maxed out. A GT3071R will do about 500 hp if pushed similarly and a 35R will do about 650 hp.
06-23-2009, 08:59 AM
#29
Nordschleife Master
http://www.squirrelpf.com/turbocalc/
Here's a compressor map and flow/pressure curve for two gt3071r's in a 5.0L engine producing 800hp:
http://www.squirrelpf.com/turbocalc/...&product_id=37
According to this, gt3071r's aren't going to choke at that level of power.
06-23-2009, 09:51 AM
#30
Drifting
My buddy's car is making 415 to the wheels with one GT3071R on a 3.4L DOHC V6 at 15 psi with .370 lift cams. The engine could do more, but it already eats transmissions on a semi-yearly basis. Two would be more than enough for any displacement you can get out of a 928 block.
Garrett under-rates their turbos by a bit. You can expect probably an easy 75 more hp out of them than the catalog suggests. If and when I ever turbo my 84 it will be getting one GT3582R. Should spool quickly and be a solid 500whp car.
Garrett under-rates their turbos by a bit. You can expect probably an easy 75 more hp out of them than the catalog suggests. If and when I ever turbo my 84 it will be getting one GT3582R. Should spool quickly and be a solid 500whp car.