I did manage to get the clutch installed before the last race at Rocky Mountain Raceway (RMR). More on that in a bit. First, I’ll do a quick review of the clutch. As I mentioned the clutch I went with was the ACT T1S-G01 (BTW- I ordered it from AA Corvette and I can easily recommend them as a great source for parts).

After getting the clutch installed (another BTW- clutch installs on the Z06 models are a PITA!) I only had  a couple of days to break it in before th race so I drove the car a lot. I’d been warned to expect harsh engagement and a lot of noise from the clutch, owning to the fact that it’s a twin disc model. I found the engagement to be very smooth. In fact I can put the car in  gear and just slowly life my foot off the clutch and it and it rolls forward without so much as a shudder. No problem on that end.

Noise-wise there is a lot of chatter in lower gears (when the RPM range is sub 2K). Occasionally when the clutch is disengaged it will even sound like popcorn popping (I’ve got not better way to describe it). The sound goes away when the clutch pedal is depressed. My understanding is that this is normal. In any event, I can live with the noise so it’s not an issue (my stock clutch had almost as much chatter)

Performance-wise the T1S-G01 is a rock. The clutch grabs perfectly and my street tires spin out in 1st, 2nd and sometimes 3rd . In fact, I had no idea just how often my previous clutch was slipping until now. The stock Z06 clutch weighs in at 55 pounds (I popped in on a scale when we got it out). The T1S-G01 weighs in at only 39 lbs. That’s a difference of 16lbs of rotating mass! It took the car a couple of weeks to adjust (it was surging at stops pretty bad from the change).  The new clutch is rated up to 85o lbs of torque so it should last me awhile (I’m only sending about 670lbs to it so there’s still  room for a few upgrades). Overall I really like ACT T1S-G01 and would recommend it to anyone wondering who’s considering it.

And at the same time I decided to upgrade the sway bars in my car. I went with the PDAFT Z06 Light Rate Racing Sway Bars and so far I really like them.

The stock sway bars hit the turbo piping in the front of my car. The PFADT bars are adjustable and so we were able to make them fit better.  They still hit a little (when going over larger bumps) but it’s much better than before. Additionally the car’s handling is improved  it sticks to the road even better than before. Another upgrade that I’m very happy with.

But you can’t win them all. It was sway bars or slicks. Since it was the last race off the year at RMR I decided to skip the slicks and do the sway bars. (there were still months of driving left). The clutch wasn’t quite broken in, but I decided to go for it. I actually ended up near the front for my first run so the track was really fresh. I wasn’t completely comfortable with the clutch, but I was not prepared for the spinning. I launched and spun… and spun… and spun. I ended up running a 13.8 at about 117 mph. Ouch. I got a second run too which wasn’t much better. Next year I’ll be ready though. Slicks and some practice and I’ll bet I can hit the 11’s. Fingers crossed (again).

Posted November 06, 2010

It’s true. You’ve heard right! I have done more stuff to my car. No one cares and I get that. But I care. It’s fun for me to post these little enhancements on my blog. And you never know- they might actually help someone who’s putting in the same stuff. If you decide to read this, fine. But I’ll just be upfront: this will probably be very boring and mildly technical. And naturally I’ll give you the “these pictures don’t do the mods justice” disclaimer. They are puzzle pieces of a much larger picture.  Once the puzzle is done I’ll wow you with some full body shots. Yeah, you can’t wait. I know.

Guess what I have on my steering wheel? Anyone? Stereo controls. It’s been bugging me for a year: steering wheel stereo controls that don’t control my stereo. But it’s okay now. I’ve remedied the situation with the PAC SWI-PS steering wheel control Pioneer stereo interface.

My Pioneer Avic Z-1 was ecstatic (”For me? Really? Oh wow. I don’t know what to say!”).  All I had to do was wire the PAC unit in and control away! After I got the car’s center console removed I had second thoughts (deja vu, right?).  After attending several years of trade school to become an electrician I began the project. First off,  I just want to say that I found the instructions for the PAC system unnecessarily confusing. They provide three different sheets of instructions (programming info, stereo harness diagrams, and car / PAC interface / version info). If you’re going to install this little guy just use the online instructions.

I got the PAC unit wired into the car’s original stereo harness just fine but I had a heckuva time finding a 12 volt power source that was tied to the ignition system. Jim to the rescue! Jim’s knowledge of electrical systems surprised me (and possibly him too) and he proved an exceptional ally as we waged war against the mess inside my car. We found a suitable 12 volt source and a ground and had the PAC interface working in nearly no time. The Z06 steering wheel has a  larger “1-6″ button that the PAC really doesn’t accommodate. I’d recommend mapping the “mute” function to it (a very handy function).

After all the excitement with my stereo I decided to take a break and tackle an easy problem.  When you work on a car sometimes you need the hood up (to pull a fuse, run a wire, charge the battery, etc). The Z06 hood has a small light that comes on when it’s open. The light never goes off.  I used to pull out the bulb, but then I had to put it back in. Out, in, out, in. What a nightmare.  I decided to put in a switch. Now when the hood is up and I don’t need the light I just switch it off. Best thing ever.

Well, except for black anodized custom painted aluminum engine caps…  I’m trying to get a black/red color scheme going for the engine. I bought these black aluminum caps and then painted the vehicle markings on them myself. They actually turned out really well.  Vanessa loves them. Remember, Vanessa is the car. Who’s crazy?

Anyway, it was finally time for a wideband. In a nutshell a wideband is a sensor that will tell you the air/fuel (A/F) ratio of the exhaust. With that information you can determine if your car has too much or not enough fuel. I bought HP Tuners awhile back and now I’ll be able to [more] safely use it.

The wideband installation was a job. I purchased an Innovate Motorsports LC-1 kit (which so far I would recommend). It comes with a gauge to display the A/F ratio. Cool! But that meant that I had to switch out my two gauge pillar (which has fuel and boost pressure gauges) with a three gauge pillar. No sweat, right? Advice: When switching out gauge pillars don’t try to make anchor pin holes in the same spot as the old gauge pillar. Just pull out the pillar trim, drill new holes, wire everything up, attach the gauge pillar back to the trim and put it back in.

Getting under my car is tricky so I took my her to Vince (of Lung Automotive). I had him weld in a sensor bung and then run the LC-1 control module. He poked the leads out through the shift boot which seems to work really well. Thanks Vince! And once again Jim came to the rescue and assisted me with the wiring portion of the project. Advice: The instruction manual for the LC-1 notes that there are two wires which have to be soldered together. It’s not kidding. Crimping won’t work. You have to solder them. Jim proved to be an adept soldering iron handler as well. It would have been difficult to achieve such exceptional result without his help. Thanks again Jim!

The gauge itself is pretty basic (I might upgrade to the XD-16 if the wideband proves to be useful). It’s a bit bright  and the constant flickering as the A/F changes seems like it’s going to get annoying. Maybe the gauge will need a switch like my hood light! I know a guy…

And finally I decided that I’d upgrade my pedals. In retrospect I don’t really know why. The clutch and brake portions of the upgrade are just cosmetic overlays, but the whole accelerator is new. Advice: Don’t try and unhook the wiring harness on the accelerator without being able to see what you’re doing. You should be able to get both of the bolts (13mm btw) out and remove the pedal with the harness still intact. Then you can pull the pedal out and see how to unhook things. It’s a super tricky harness (with good cause).

And finally, it was time to say good by to Mr. AcDelco. That’s my old battery. It served me poorly for the last year before finally giving up the ghost this past winter. It’s actually very difficult to find the correct battery replacement for a 2007 Corvette z06. In fact I couldn’t. I ended up getting a DuraLast with similar specs (same cold crank amps- very important). Justin helped me purchase and install the battery. The battery is located in a compartment in my trunk and I have my amp rack and speaker wires sitting on top of it. Advice: If you have you battery inside the car like I do and you end up getting a replacement that’s not quite the same as the original remember to make sure the new battery is vented.

Well that blog post was almost as much work as actually doing the car mods. Next up, I’m going to finish my stereo and then start working on my new engine (LSX block). 1000WHP ready or not, here I come.

Originally Posted March 21, 2010

A couple weeks back Jim, Justin and I hit the Rocky Mountain Raceway for some midnight drags. Anyone who hasn’t gone should check it out- $5 to go watch people dual it out in the quarter mile. And a mighty dual it was. Corvette vs. Corvette vs. Camaro I  ran a 12.1 at 131mph, Jim ran a 12.2 at 121 and Justin ran a 12.3 at 117mph! It was a super close race between Jim and I- he had me until about 90mph. You can check out one of our races and some pictures on Jim & Cindy’s blog. We were all hoping for 11 second runs, but we’ll have to get a little faster. 

 Speaking of a little faster… That’s what I plan to be shortly. I recently picked up a copy of HP Tuners. This nifty little software package gives the user control over every aspect of the car’s engine computer (yes, this can be very dangerous) . I need to pick up a few more things before I’m ready to start seriously tweaking, but I predict a predict a lot of fun… or tears. 

Originally Posted September 28, 2009