I didn't baby it. I made sure I loaded the engine up. I did quick pulls of full throttle. This isn't my first engine build but I am not saying I am an expert either. To many opinions on how to breakin a motor out there. Most end up fine.

Oh I did check and the vent hose was venting. Didn't notice any larger amount pressure flow but is there away to check case pressure? Wasn't pushing oil into the intake which is what my broken ringland did on my 3stge.

That was a possibility I thought. The engine was rebuilt to OEM specs. It has no noticeable oil burn and runs very strong. Its got now maybe 2-3k on it. The machine work was done at a very high quality shop known for their build quality. The motor made 130whp in my ae86 on a mustang dyno. The motor ...

I checked the crank the wear mark was barely noticeable. I don't think that it.

I just finish a full rebuild of a bigport bluetop 4age for my ae86. Everything was fine until I did a track day at NJMP this week end. I had to cut my day short because oil was leaking out the front pully seal. I lost about 1/2 quart of oil during the 20 min run. As soon as the oil cooled off it sto...