Greg Collier
20+ Year Contributor
- 1,258
- 14
- Mar 8, 2003
-
Diego,
California
Race Prep
After coolant system pressure tests, coolant system dye and blue light leak tests, engine compression tests, flow tested the PWR radiator, rewired the coolant pressure switch warning light, installed a new water pump and gasket, increased the height of the coolant breather tank, installed 2 new Greddy 1.3 bar (18 pound) radiator caps, replaced the banjo fitting with a straight line at the FP turbo oil filter, fabricated more sheet metal housing for efficient airflow, changed the motor oil and filter, changed the tranny fluid, bled the brakes and changed the pads, bled the clutch, re-torqued all the suspension bolts and nuts, changed the right front Hoosier tire, cleaned all the hot tire rubber globes that accumulate on the inside of the rims, cleaned the body and paint touch up on the front fascia, purchased another 40-gallons of VP race fuel, loaded the car on to the trailer, loaded the truck with spare tires, parts, and tools, the car was as ready as it would ever be for the TCRA/HSR California Speedway race in September.
Event
HSR (Historic Sportscar Racing) was holding its annual California Speedway race and invited TCRA (Touring Car Racing Association) and POC (Porsche Owners Club) to help with the astronomical costs of renting the facility. They were expecting 300 entries and 5000 spectators.
To The Track
It was a perfect 70-degree Southern California day when we arrived mid-morning on Friday to set up in our garage. The Flying Banana looked good, sounded good, and was ready for a weekend of fast laps and a podium finish.
After we were settled in we took a walk around the garages seeing some of the most stellar racecars ever built. One that caught my eye was the Dan Gurney team Mark-3 prototype that was built for the 1992 24 hour of Le Mans. The car was way ahead of its time with a complete carbon fiber body that looked like a jet fighter. Amazingly, it was powered by a Toyota 4-cylinder single turbo charged motor that made 1000 hp at 12000 rpm.
The event schedule called for a Saturday practice, timed qualifying, and then an actual qualifying race for the main trophy race on Sunday. Sunday wed get an early morning practice and then the main race at 1:15 PM. I was running with the TCRA group that consisted of BMWs, Porsches, Acuras, Audis, Lotus Elise's, and some vintage stuff like a 1958 Devin Special. This car was tube framed with a fiberglass body powered by a modified 475 hp Corvette engine. It couldnt have weighed over 1500 pounds and reminded me of an original Shelby Cobra. All in all it looked like a good group of somewhat competitive cars.
Saturday
We arrived at the track at 8am ready for our 8:30 drivers meeting. A hundred and forty drivers crammed into the Fontana drivers lounge where was discussed how great it was to be there and how everybody should be careful. The meeting was so short and layback I dont know why they even bothered. The only good thing about the meeting was Tom Dixon showed up there to help us with the car over the weekend.
With the meeting complete we prepared for our practice laps. I started the car and it seemed to stutter. It was idling erratically but I figured it was cold and needed to be warmed up.
My run group that consisted of over 40 cars was practicing with another group of 20. The simple math of it was over 60 cars on the track at the same time. The Cal Speedway Le Mans configuration is 3 miles, but even so with 60 cars at the same time that was a little cramped.
I ran a couple of mid speed warm up laps getting the tires hot and re-orienting myself to the track. Lap three I picked it up and passed quite a few cars. Lap four I let it rip on the front straight of the oval and as I came to turn three onto the road course I noticed my water temps began to rise above 220 degrees. I finished the road course at slower speeds and took the car back to the garages. We let the motor cool and discovered we were having the same low water levels that we had experienced at the last race at Willow Springs. We also noticed that there was a fine mist of water and Water Wetter on the top of the tranny. Through further inspection we deduced that the new Greedy radiator cap wasnt sealing properly. We pulled a rubber washer off one of our half dozen spare caps and placed it in the seat of the thermostat housing. When we re-installed the Greddy cap it seemed to be a better seal. We had timed laps coming up so that was the opportune time to test our fix.
Back out onto the track I began the same scenario of getting the tires warmed up and focusing on my driving form. The motor was still idling poorly in the pits but once out on the track the power was insane. I was ready to do some quick laps as I pulled onto the front straight of the oval. My run group was less the other 20 cars so there was some breathing room to get up to speed. I blasted through turn one then turn two came into view. I ran low on the track and could feel the g-forces via the incline of the oval pushing me down like I was on rails. Turn three came up real fast as I down shifted to 4th then 3rd. Its so nice to have all the extra power in third gear that I dont end up revving real high at slower speeds. My water temps were 210 and holding and I felt like we had the problem licked. I blew down the back straight toward a hard braking right-hander. This equates to 120mph straight to a 30mph buttonhook turn. After I braked and began to accelerate through the turn the rear end of the car swung around a teacup carnival ride. I immediately pushed in the clutch so I wouldnt stall as I ended up facing the opposite direction on the track. Fortunately there were no oncoming cars so I was able to get back into position. I glanced at my water temps to see 220 degrees reading on the meter and I went directly to my garage.
We had two hours before the qualifying race so the hypothesis discussions began. The tranny was dry so the Greddy radiator cap was sealing. A Porsche mechanic who had been interested in the car since Friday suggested that we might be creating some sort of vortex at the radiator and ending up heat soaking. We thought, what the hell and removed one of the radiator fans. Tom rigged up a hose extension to the expansion tank, running the end up to the front windshield. That way if we were pumping any water out of the tank Id immediately see it prior to any overheating.
Qualifying Race
It was 1:15pm with track temps of about 80 degrees. My race group of 43 cars were out on the track behind the pace car doing our warm up lap. Even with my spin out, my lap time put me in the 26th position for the qualifying race. We made it through the last turn out onto the oval and the pace car pulled onto the hot pit lane. We grouped up into our tight side-by-side starting fashion awaiting the swing of the mighty green flag.
Green, green, green, I powered from 2nd to 3rd gear. I took a high line toward turn one and immediately passed eight cars. I shot down the track toward the apex of the two increasing my momentum by two fold. I could see the cars in front of taking a wide entry into turn three onto the road course. Their tires were billowing smoke and I knew I had the braking power to take me through the inside of the turn. I set my course and went for it. The car responded like an F-15 as I gave just enough brake pressure to set me up for the quick and hard left right turns. I passed another five cars.
That left four cars to go as all my attention was on getting to the front. I had the entire road course to go to catch up. My Hoosiers stuck to the track like glue as my next victim came into sight. I was on the back straight after turns five and six coming up fast on this Speed Touring AWD turbo Audi. I was right on his ass at turn nine, a slow and hard right handed button hook, when water from the expansion tank began pumping out onto the windshield. CRAP!! I finished the road course and went directly to the garage.
We jacked the front end of the car up and I noticed a huge puddle under the car and it wasnt water it was tranny fluid. Tom hustled down there and discovered two holes the size of his pinky finger in the tranny case. I have no idea how it happened, or even if its external or internal. Our weekend was over.
At the end of the race at least a dozen people came over to see what happened to the car. All their comments were, Man that car is fast!
It could have been a great weekend
After coolant system pressure tests, coolant system dye and blue light leak tests, engine compression tests, flow tested the PWR radiator, rewired the coolant pressure switch warning light, installed a new water pump and gasket, increased the height of the coolant breather tank, installed 2 new Greddy 1.3 bar (18 pound) radiator caps, replaced the banjo fitting with a straight line at the FP turbo oil filter, fabricated more sheet metal housing for efficient airflow, changed the motor oil and filter, changed the tranny fluid, bled the brakes and changed the pads, bled the clutch, re-torqued all the suspension bolts and nuts, changed the right front Hoosier tire, cleaned all the hot tire rubber globes that accumulate on the inside of the rims, cleaned the body and paint touch up on the front fascia, purchased another 40-gallons of VP race fuel, loaded the car on to the trailer, loaded the truck with spare tires, parts, and tools, the car was as ready as it would ever be for the TCRA/HSR California Speedway race in September.
Event
HSR (Historic Sportscar Racing) was holding its annual California Speedway race and invited TCRA (Touring Car Racing Association) and POC (Porsche Owners Club) to help with the astronomical costs of renting the facility. They were expecting 300 entries and 5000 spectators.
To The Track
It was a perfect 70-degree Southern California day when we arrived mid-morning on Friday to set up in our garage. The Flying Banana looked good, sounded good, and was ready for a weekend of fast laps and a podium finish.
After we were settled in we took a walk around the garages seeing some of the most stellar racecars ever built. One that caught my eye was the Dan Gurney team Mark-3 prototype that was built for the 1992 24 hour of Le Mans. The car was way ahead of its time with a complete carbon fiber body that looked like a jet fighter. Amazingly, it was powered by a Toyota 4-cylinder single turbo charged motor that made 1000 hp at 12000 rpm.
The event schedule called for a Saturday practice, timed qualifying, and then an actual qualifying race for the main trophy race on Sunday. Sunday wed get an early morning practice and then the main race at 1:15 PM. I was running with the TCRA group that consisted of BMWs, Porsches, Acuras, Audis, Lotus Elise's, and some vintage stuff like a 1958 Devin Special. This car was tube framed with a fiberglass body powered by a modified 475 hp Corvette engine. It couldnt have weighed over 1500 pounds and reminded me of an original Shelby Cobra. All in all it looked like a good group of somewhat competitive cars.
Saturday
We arrived at the track at 8am ready for our 8:30 drivers meeting. A hundred and forty drivers crammed into the Fontana drivers lounge where was discussed how great it was to be there and how everybody should be careful. The meeting was so short and layback I dont know why they even bothered. The only good thing about the meeting was Tom Dixon showed up there to help us with the car over the weekend.
With the meeting complete we prepared for our practice laps. I started the car and it seemed to stutter. It was idling erratically but I figured it was cold and needed to be warmed up.
My run group that consisted of over 40 cars was practicing with another group of 20. The simple math of it was over 60 cars on the track at the same time. The Cal Speedway Le Mans configuration is 3 miles, but even so with 60 cars at the same time that was a little cramped.
I ran a couple of mid speed warm up laps getting the tires hot and re-orienting myself to the track. Lap three I picked it up and passed quite a few cars. Lap four I let it rip on the front straight of the oval and as I came to turn three onto the road course I noticed my water temps began to rise above 220 degrees. I finished the road course at slower speeds and took the car back to the garages. We let the motor cool and discovered we were having the same low water levels that we had experienced at the last race at Willow Springs. We also noticed that there was a fine mist of water and Water Wetter on the top of the tranny. Through further inspection we deduced that the new Greedy radiator cap wasnt sealing properly. We pulled a rubber washer off one of our half dozen spare caps and placed it in the seat of the thermostat housing. When we re-installed the Greddy cap it seemed to be a better seal. We had timed laps coming up so that was the opportune time to test our fix.
Back out onto the track I began the same scenario of getting the tires warmed up and focusing on my driving form. The motor was still idling poorly in the pits but once out on the track the power was insane. I was ready to do some quick laps as I pulled onto the front straight of the oval. My run group was less the other 20 cars so there was some breathing room to get up to speed. I blasted through turn one then turn two came into view. I ran low on the track and could feel the g-forces via the incline of the oval pushing me down like I was on rails. Turn three came up real fast as I down shifted to 4th then 3rd. Its so nice to have all the extra power in third gear that I dont end up revving real high at slower speeds. My water temps were 210 and holding and I felt like we had the problem licked. I blew down the back straight toward a hard braking right-hander. This equates to 120mph straight to a 30mph buttonhook turn. After I braked and began to accelerate through the turn the rear end of the car swung around a teacup carnival ride. I immediately pushed in the clutch so I wouldnt stall as I ended up facing the opposite direction on the track. Fortunately there were no oncoming cars so I was able to get back into position. I glanced at my water temps to see 220 degrees reading on the meter and I went directly to my garage.
We had two hours before the qualifying race so the hypothesis discussions began. The tranny was dry so the Greddy radiator cap was sealing. A Porsche mechanic who had been interested in the car since Friday suggested that we might be creating some sort of vortex at the radiator and ending up heat soaking. We thought, what the hell and removed one of the radiator fans. Tom rigged up a hose extension to the expansion tank, running the end up to the front windshield. That way if we were pumping any water out of the tank Id immediately see it prior to any overheating.
Qualifying Race
It was 1:15pm with track temps of about 80 degrees. My race group of 43 cars were out on the track behind the pace car doing our warm up lap. Even with my spin out, my lap time put me in the 26th position for the qualifying race. We made it through the last turn out onto the oval and the pace car pulled onto the hot pit lane. We grouped up into our tight side-by-side starting fashion awaiting the swing of the mighty green flag.
Green, green, green, I powered from 2nd to 3rd gear. I took a high line toward turn one and immediately passed eight cars. I shot down the track toward the apex of the two increasing my momentum by two fold. I could see the cars in front of taking a wide entry into turn three onto the road course. Their tires were billowing smoke and I knew I had the braking power to take me through the inside of the turn. I set my course and went for it. The car responded like an F-15 as I gave just enough brake pressure to set me up for the quick and hard left right turns. I passed another five cars.
That left four cars to go as all my attention was on getting to the front. I had the entire road course to go to catch up. My Hoosiers stuck to the track like glue as my next victim came into sight. I was on the back straight after turns five and six coming up fast on this Speed Touring AWD turbo Audi. I was right on his ass at turn nine, a slow and hard right handed button hook, when water from the expansion tank began pumping out onto the windshield. CRAP!! I finished the road course and went directly to the garage.
We jacked the front end of the car up and I noticed a huge puddle under the car and it wasnt water it was tranny fluid. Tom hustled down there and discovered two holes the size of his pinky finger in the tranny case. I have no idea how it happened, or even if its external or internal. Our weekend was over.
At the end of the race at least a dozen people came over to see what happened to the car. All their comments were, Man that car is fast!
It could have been a great weekend
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so I've been privately trying to science out answers and solutions. Since Gus in Hawaii with 18G car is having the same issues and contacted me, I wrote some stuff about it and am posting this to public tech forum to try to eventually advance the science and find SOLUTIONS to this 3S issue.


