944 Chumpcar/race car updates
08-25-2016, 12:11 PM
#1
944 Chumpcar/race car updates
For people interested in our 944 racecar, here is what we have been doing since the 14 hours of Daytona.
Daytona showed us that we really had to get serious about the cooling system as the stock oil/water cooler was putting too much oil heat into the water system. We ordered a turbo oil cooler setup and fabricated a mount for it to bring in air through the front fog light hole. Initial testing shows the system is working with no leaks.
The oil seems to be running a bit hotter than stock, but the water temp is much cooler so overall Id say it was a success. Previously wed be coming in off the track with oil/water temps of 220-230 which, when shut down, would heat soak up to 260 and puke coolant all over.
Now, the water is staying at a constant 200-210 coming into the pits and only heat soaking up to 220-230 or so.
The oil seems to be a bit hotter based on idle oil pressure readings but i dont have an oil temp gauge yet to know for sure.
After some testing at PBIR during SCCAs we were comfortable with the oil system. Next on the list before sebring was an updated corner balance and alignment. Our corner weights are still off due to a bent frame but are much improved over our previous numbers.
As it stands we are just about ready for our next 12 hour race. Most of the work left to be done is wiring cleanup and pulling more spare parts.
Daytona showed us that we really had to get serious about the cooling system as the stock oil/water cooler was putting too much oil heat into the water system. We ordered a turbo oil cooler setup and fabricated a mount for it to bring in air through the front fog light hole. Initial testing shows the system is working with no leaks.
The oil seems to be running a bit hotter than stock, but the water temp is much cooler so overall Id say it was a success. Previously wed be coming in off the track with oil/water temps of 220-230 which, when shut down, would heat soak up to 260 and puke coolant all over.
Now, the water is staying at a constant 200-210 coming into the pits and only heat soaking up to 220-230 or so.
The oil seems to be a bit hotter based on idle oil pressure readings but i dont have an oil temp gauge yet to know for sure.
After some testing at PBIR during SCCAs we were comfortable with the oil system. Next on the list before sebring was an updated corner balance and alignment. Our corner weights are still off due to a bent frame but are much improved over our previous numbers.
As it stands we are just about ready for our next 12 hour race. Most of the work left to be done is wiring cleanup and pulling more spare parts.
Last edited by ddombrowski; 08-25-2016 at 12:36 PM.
08-25-2016, 05:48 PM
#5
You should create a duct to the oil cooler from the fog light opening, it will help the effectiveness of the cooler at all speeds. Ram air through it like the factory did. The S2 and Turbo had a plastic scoop/duct up to the slats in the front bumper to do just this. I tried to take a pic of my car but it doesn't really show without the bumper off.
08-25-2016, 11:06 PM
#7
Yes, thats right. Between the '12 hours of Sebring' and the 'not quite 12 hours of Sebring' that we race in, I always end up thinking its a 12 hour race. You're right though, its 14.