I had my motor refreshed over the winter and went to a dyno yesterday to get power figures for the upcoming race season. It was a little unclear if the motor had been run in, so we went ahead and performed the RPE prescribed run in procedure before doing any full power runs.
After finishing up and getting home, I got the car in the air to start an oil change. After I got the diffuser off I noticed oil in several locations. The AN fittings looked like they need a little snugging. The rest I'm not sure about.
Congratulations on getting it back in the car and running,
I suspect some of that is residual left over from the rebuild. But since you are draining the oil anyway, remove the leaking fittings and bolts from the sump and investigate and/or replace the seals. Clean everything and put it back together. There is only one of the sump bolts that can leak oil (aft rh corner)
the large one under the exhaust is a coolant chamber plug, I never could find a part number for the o-ring. I just reused them.
the one on the exhaust header mount, just remove it, inspect for any more leaking, reinstall with a dab of anti-seize. There should not be any fluid behind that bolt.
the upside down bolt next to the header, is the same, should not have any fluid behind it. Spray it with brake clean and/or remove it, clean and reinstall it.
Thanks for the tips - I will give them a go. I have to be honest I didn't put the motor back in - the shop that rebuilt the motor did.
Hi Garrett, was there any accumulation of oil on the rear diffuser, or just some oil weeping around the edges as shown? If there wasn’t any accumulation I suspect that most of that is from the assembly process like Graham said. But I would keep an eye on it to see if it continues.
Assuming that your car was rebuilt by one of the Radical certified shops it should have been run in on their Dyno using a brake in oil and then had the oil changed afterworlds.
Charley
I wouldn't call it oil accumulation on the diffuser - it was more or less dry. I'm not sure if it made it on to the dyno for a break in or not. COVID and all.
