Turbostangman, thanks for the info., I know BSharrer ran 9.8's with a couple .60/.63 T3's but he was pushing them hard and kept blowing the seals I believe. I remember reading your site a bunch when I realized how inexpensive I could get these GN turbos and your combonation screamed. One of the main things I always remembered about your setup was the decent amount of lag but sounds like the C4 fixed that problem, but lag is a blessing in disquise when running on street tires. Do you run street tires or drag radials around on the street? What was the fastest you have spun your tires at from a roll, mine was about 60mph with my old TT kit. I was getting full boost with that kit at 2400rpm with the IHI turbos and that would just annialate the tires so I would like to be around 3000-3200rpm which is what you said you are at.
JDEstill, I really don't know how much boost I am going to run at the moment, pretty much as much boost as it takes to run the ET I want, I don't really go by hp, I am more into the proven times it will run (unlike supras
) . But here is the boost I think I am going to have to run in order to hit these times:
10psi- high high 10's on slicks
13psi- mid 10's on slicks
16-18psi- high 9's
-It will have a decent sized Intercooler on it
-shift no higher than 6000rpm, more around 5800rpm
Here at our track my friend ran 10.91@125 with 13lbs of boost from small .48/.60 IHI turbos on his completely stock '115k mile' longblock (no porting, didnt even remove lower intake).
turbonatr, yeah, those would probably work better but I have $160 and some labor time into 2 '87 GN turbos so I am going to use these for now, I will be upgrading down the road.
little info on my setup:
The heads I will be running are Aluminum Twisted Wedges that have been CnC 'stage 3 ported' which flow 287/204@.500 lift and 314/216@.600 lift, I will be running the F303 cam (.512/.288). GT40 intake with the lower port matched to the heads, 70mm T/B, flipped BBK shorties, 42lb inj., 255 intanke, etc.
Brian