powerdyne + new wrap + 2.75 grooved

[John_D.]

The Apexi box isn't going to work for me after all... So I ordered a Mini AFC 2.0 from Zoomer. It has a preprogrammed fuel curve for using an LS1 maf sensor (like I am), and it has user programmable curves too.

It is supposed to be here Wednesday. But then I go out of town for a week and a half on Thursday....

The 6-10 psi was definitely stronger than the 6-8 psi.

When I looked at the autotap log from last Sunday's run (0-100mph) I noticed something interesting. The acceleration was nearly as strong in the 90-100 mph range as it was in the 40-60mph range. In other words, it kept pulling equally hard on top end, instead of falling off.

That was with 10 degrees of knock retard too. If I take out a couple of degrees of timing, it would probably eliminate most of that kr, and should run even stronger.

[98GREENGLOW]

Maybe I need to invest in a TRC-1. My top end is BAD. I only trap 93mph in the 1/4 mile....Of course beffore the powerdyne I trapped any where from 82- a one time best of 87mph. Now I trap any where from 89-93 mph. Since back then I was usualy around 85 mph and now Im usualy around 92 mph, I guess I did gain 7 mph on average. Still pretty weak for a supercharged v6 though.

But the thing about my set up is that I never see much boost in third gear for some reason....Say it jumps to 6 in first gear and then to 7 in second gear........When third gear hits it will build very slowly and usualy not even be at the 5-6 pound mark before I reach the end of the track.

So usualy on my top end at the end of the quarter(where I need boost the most ) Im only getting like 3-4 pounds at most.

Thats why I cant wait to get the new pully. If it starts at 6 pounds in each gear and builds to 9-10 pounds then my track times and mph will shorely be much better.

I should finish the quarter at 95 mph.......I NEED MY PULLY!!!!!!!

[Rob 94Hawk 319]

John, did you figure out exactly what belt we should use on your new wrap configuration (sorry if it was already mentioned somewhere else, I just didn't see it)?

TIA,

____________________
Rob
1994 Firehawk#319 (slightly modified)
11.83@120.61
MODLIST
www.RobsHawk.com
Blown V6
2002 Trailblazer
www.SDFB.org
"Garp bit Bonky"

[John_D.]

I'm running a 103. It's a little tricky to put on.

If you can get a 103.5 or 104, that would be the best.

You might even be able to get by with a 105 (that's what came with my used kit), but I think the tensioner would be at the end of it's travel.

[Rob 94Hawk 319]

Very cool. Thanks John!

[98GREENGLOW]

I just use the berlt that came with the kit and have NO problems with the tensioner. Of course thats on my current 3.1 pully.... I cant see a 2.8 being much different though. Oh...Im referring to the JohnDpower rap of course.