Saturday, August 30, 2008

Turning a new leaf

There comes a time in every motorheads life that a decision needs to be made between a street car, and a race car. That time has come to me this week. It's always been a struggle with the freshly done up 86 Z28 how far to go with motorsports. Now the struggle is over, as a new addition to the stable arrived yesterday. Coming to a race track near you in 2009, a 1994 Pontiac Trans Am GT.

Click on image for bigger view.

Current specs on the car as follows:
  • Stock V8 5.7L LT1 (1995 engine) - 275HP @ 5000, 325 ft-lbs @ 2000 RPM
  • Auto 4-spd Transmission
  • 3.23 Rear axle ratio with Posi
  • Double diamond subframe connectors
  • LS1 front brake conversion
  • Magnaflow Cat-back exhaust
  • T/A Diff Alum. Girdle
  • Walbro 255 LPH Fuel Pump
  • SLP Fan Switch
Yeah, it may look tame right now, but come spring 2009, she'll be a full fledged dedicated road race car. Of course due to budgetary constraints, not everything will be completed this winter. For my 2009 "rookie" season, I will leave the engine at stock power as it's already fast enough to get me in trouble. Other than the usual mechanical updates like wheel hubs, tie rod ends, etc, here is some of the planned "upgrades" for this winter:
  • Complete gut the interior parts - Carpet, rear seats & belts, plastics, stereo, etc.
  • Remove all HVAC components - Air conditioning parts, heater parts, etc.
  • Shock tower brace (thanks to Jeff for the used component)
  • Replace all fluids with synthetics
  • Replace spark plugs
  • Get an optimized ECM tune
  • Cold Air Intake
  • Stranos upper A-Arm camber bushings
  • 160* Hi-Flow Thermostat
  • Relocate battery to RR of the car
  • Upgraded brake pads, probably Carbotech XP10 on the front, and XP8 for the rear
  • ...and of course 4 Hoosier R6 R-Comp tires - 275/45/16 mounted on lightweight 16x10 wheels
If the budget allows it, I'll be installing the Stranos Handling Package 3 which includes springs, front & rear sway bars, 4 Koni adjustable sports shocks, and an adjustable panhard bar. Although a hefty $1700 with shipping, this package has been used on alot of championship winning Firebirds & Camaros....It's a proven setup.

For photos and updates coming soon.

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Monday, May 28, 2007

Autocross PITL Event 2


Another PITL Event 2 went off without hitch. This time around we had 94 competitors which is still pretty big. After the drivers meeting, the action got under way around 10 AM. I was in the first Marshalling group which was fine by me. Do it now and get it over with.

About the car; Event after installing the high volume gas pump, I'm still experiencing fuel starvation after a few gears in the high RPM range. Installing a clear fuel filter revealed that the pump cannot get the fuel to the carb...either there is something blocking the main line, there's vacuum in the tank, tank pickup assembly has a problem, or the cam/fuel pump pushrod has worn and not getting full effeciency from the pump. Even with the problem, the course was too open that I was on the gas long enough to be affected....except a little on my last run.

Weather started off sunny, but around 11 AM, clouds moved in and remained for the rest of the day. There was even a few sprinkels of rain throughout the afternoon, but not serious enough to hamper traction.

My first 2 runs, the car was simply WAY too tail happy...I couldn't keep it from going sideways on most turns including the big left hander on the top end. I ended up drifting through that turn in full countersteer. I wish someone would have video taped that as I'm sure it must have looked pretty good. Before I started my 3rd run, I dropped the rear tire pressures by 1 psi, for a total of 30.5 psi. I also decided I would slow down more for that big left hander and try and hug the inside cone, and power out drifting to the outside cone of the next gate. Well, everything worked accoring to plan. I had way more traction, and cutting that big turn gave me my best time to date of 43.6xx.

For the 4th run, I had Stephen O. come for a ride. He informed me that a soccer mom ripped the front of the Sunfire off 2 weeks ago while she was turning into a parking lot, so he was there for ride-alongs all day. I hope everything works out for him with his new car purchase. For the 4th run, I was plain out of control trying to better my time I simply overdrove the car all over the place. I did a power slide through the bus stop and clipped the last 2 cones. Oh well...it was still fun.

On the last run of the day, while sitting in the start box, I kept saying to myself "DON'T OVERDRIVE IT...DON'T OVERDRIVE IT". I take off always keeping that in mind. Midway through everything feels great. Although I was pushing it quite a bit, I made sure to slow down quick in the right zones, and power out feathering the throttle to get good traction. The car did miss/stutter on the stretch before the big left hander and that REALLY PISSED ME OFF! I didn't lose focus though. As I'm headed for the stop box, I knew the last gate entering the box was tight as 80% of people hit it more than once during their runs. But I was trying hard for my best time. And of course, I clipped it for a 2 second lost. Again, I WAS REALLY PISSED OFF because I knew the rest of the run was nearly perfect. Sure enough, I hear my time "44.45 with 2 second penalty". This would have meant a 42.45 run without the penalty. I new it was a good run, but not over a second faster than my best of the day. That time would have probably put me in the top 25 (of 94)...arrrgghhh

Oh well, like the saying goes, "I bad day of racing is still better than a good day at work".

Now this week I'll be busy working on the beast again. I have to figure out that fuel problem, install my new camber bolts and tie rod sleeves, and fix my tail pipe. I'm even considering pulling the intake again to try and figure out where that damn oil leak is coming from. If I'm feeling REALLY couragest I might cut my coil springs to lower the car an inch and stiff up the suspension more.

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