A couple of thoughts - I do my GTech runs in 2nd gear. the numbers are better than 3rd gear due to less drag. I think it was the Gtech forum where that was recommended. I'd be curious to see what your runs look like in 2nd gear. also, there is a correction factor for aerodynamic drag. Its posted on GTech's site...

 

The cams are the Piper Rally cams; I grabbed them from Quantum Racing. I'll see what I can do about 2nd gear runs one I replace my head gasket. I'm still leaning towards having the head ported when I pull everything apart so it may be a while.

 

are you planning on getting the BJ stage 5++ from Quantum- Racing ??

 

I ended up ordering the parts to replace the head gasket today. I have a couple more track days coming up, and I'd like to make at least one of them. What that does mean, though, is that I should be able to provide some good graphs showing what just the cams really deliver. I'll update the thread once I have the car fixed.

<OT>
This car is amazing, I was pulling away from C4s and C5s at 130+ mph on a road course! I even managed to run down some current full competion Corvettes. Mostly C4s, but a couple of C5s, too. I think after running down the Gallardo, my 2nd biggest thrill that day was chasing down a supercharged C4; he pitted as opposed to pointing the pass, though. Another thing I find amazing is that I'm doing this on stock sized rubber - 235/45-17 RA-1s.
</OT>

I haven't decided who I'll have port the head. I like the numbers BR shows for increased flow, but I haven't seen any solid before/after numbers (or graphs) from anyone yet. One thing I don't want is a head that's been ported to the point where low RPM driveability suffers. That's one reason I'll be avoiding an all out race head.

 

I have the BJ 5++ with sheet metal intake and 75mm TB AND Piper 274/12.0 cams. With the stock turbo, I can hit full boost by 3krpm no problem and it pulls HARD for a stock turbo setup (especially with the stock downpipe on it right now). That is one thing BJ is really good at; he doesn't give up flow at low lift. You get much more area under the curve.

Mark
www.Quantum-Racing.com
937.642.5400

 

Thanks for the info Mark! The BJCH choices are also something I'm strongly considering. You guys have a spare head I can test and review? (j/k)

Thanks for the great service on the cams and now the ARP head studs.