Been still working on minor vacuum leaks around my crap welding around the flanges and injector bungs. Not surprising though, given this was my first attempt at something like this. I think I got it to a reasonably sealed up point and the weather finally cleared enough to drive it to work yesterday.
Driving home I noticed it was smoking quite a bit, like before I hooked up the crankcase vacuum to help the rings. Also was seeing some oil pressure instability at higher rpm. When I got home I checked the oil level and was dang near two quarts over full. Not sure what I was thinking when I changed the oil two weeks ago, but clearly wasn't counting bottles.
So I pulled it into the shop and disconnected the external oil line return and using a spare distributor as an oil priming tool quickly pumped out around 2 quarts.
Then driving to work this morning, I wound it up some. Pulled to 5400rpm, with no indication of laying over, but was starting to see some oil pressure instability again so I lifted to get it to shift and then put the pedal back down until ~4,800rpm in second.
These oil instabilities are why I'm working on external return lines on my next engine as I'm pretty sure it's oil aeration causing the issues. There is a sweet spot for the oil level to be at that it seems to like and I must not have it right yet after yesterday's oil volume adjustment.
The white line is RPM, I was in 2nd gear then it downshifted into first and ran up to 5400rpm and I lifted to get it to shift into second early and hit the throttle again. I need to look at my sensor lag settings as it shows the TPS and MAP signals falling after the RPM, which should be the opposite case.
