Quote:
Originally Posted by Brzzee
Currently I'm using a Crawford AOS. I'm uncertain where an additional oil catch - expansion tank is plumbed to contain the additional Accusump dispensed oil. I spoke with Canton about oil starvation prevention NA and a 2 QT unit was suggested. I thought to mount it as your image in post #101 shows attached to the struct brace. Would/could/should a "larger" catch can be inserted between the engine and the AOS when the 2QT is installed--Your comments in post #122 not withstanding?
Really appreciate all the work ET has put into the FA platform.  |
Ok let's go into details about how our oiling system worked over last weekends Trans Am/Whelen USTT Championship at Lime Rock. Overall we are extremely happy the engine not only survived but it ran flawlessly over the entire racing weekend!
Here are the 25 seconds of Lime Rock Park that make you want to go back!!! We just missed out on first place at the Trans AM and Whelen USTT Championship in TT1 to a race prepped GT Viper by 4/100ths of a second and just in front of a USGT GT2 Z06. Given that has been a winning car and we are no where near TT1 spec (we just decided to up class the car since we are not in the championship running)
The overall package of our engine oiling mods from the Element Tuning Pro Comp motor build, the Perrin oil cooler, to the oil accumulator did exactly what we needed it to! The engine was absolutely screaming around the track all weekend and we were typically running 6-8 laps per session. What I noticed was very consistent oil pressure once up to racing temperatures. So at the start of my session for the 2 warm up laps I would see around 75 psi and then after I really got into my timed runs I was seeing 60-65 psi until the last lap. For this power level it's a win, win, win!!!!!!
We have a total of about 10 quarts of oil between the engine, Perrin oil cooler, plus our accumulator kit and it was filled with Red Line 50w Race. The accumulator was definitely working as we were getting pretty large amounts of oil in our catch tank. Because we really wanted to know how this affected the system we did not drain back and what we noticed was about 3/4 to one full quart of oil is pushed into our catch tank. Before anyone panics just keep in mind 9k RPM and we are rocking 325 racing slicks so this is not your chick's FRS! Because we run a 1 gallon catch tank we let it ride for about 3 sessions and pulled out about 2.5 quarts of oil but still had zero issues with oil pressure or oil starvation.
I think it's really important if guys decide to make your own kit instead of buying one, you understand the needs of the entire system! I think ultimately a large capacity catch tank with a drain back will be ideal. Without our internal engine oiling mods there is no way we would have had enough oil pressure however.
In other bad news the transmission let go on day 2. We honestly were expecting it at some point and have a spare but I thought it would hold out for this event. 4th gear sheared off accelerating in the back section. Now on street tires the box was fine at this power level since you can factor in wheel slip but not on slicks.
Thanks,
Phil Grabow