andyc0313

I think i'll probably tap it anyway for peace of mind and JB weld around the head of the bolt. I'll report back with the results!

Mouse

^^ This was actually one of the first things that came to mind even before I read the rest of the thread. Whether it's you building it or an experience quality shop, it doesn't take much material getting into any of the channels in the block to make that happen. Of course there are several gremlins that can get into an engine build, but foreign matter into either an oil or coolant channel is probably one of the easiest to have happen, even when being careful. Let us know how it turns out...

thendawg

iTrader: (2)

Yeah without plugging that hole, youll get nearly 0 oil pressure during low flow (idle) and significantly reduced at higher rpm. Youre very lucky if you havent destroyed the motor. I drilled and tapped the hole for 5/16. Its aluminum, so very easy to machine. I also put JB weld on the bolt before I screwed it in to completely seal the threads.

andyc0313

Yeah, I can only hope no serious damage has occured, although I'm confident enough it's safe because it's never been babied as much as it's being during this break-in period.

andyc0313

Success! No more oil light flickering! She idles a whole lot better now and no more vvti code! I'm about to take her for a test drive but it seems a lot more solid and healthy. I'll keep you guys posted.

sebbyxtc

iTrader: (7)

Any news?

andyc0313

Yeah, the oil pressure problem was solved! I plugged that hole and it worked perfectly. However, now I'm afraid I'm starting to hear what sounds like a spun bearing. So ill be needing to check that out soon.