Quote:
Originally Posted by Coheed
Well said, and it's good to see someone shares my point of view on the narrow bearing journals. Maybe they use crank bearings that feed oil through the crank through several degrees to help maintain oil pressure as long as possible.
I guess we can hope for the best right? Most older cranks were shot-peened instead of nitriding. I'm sure nitriding is more cost-effective and is likely just as good. But I've never tested the strength differences. One changes the metallurgy and the other changes the grain structure.
Good call on the oil pressure too. I'm hoping they supply a stout oil pump in this engine as well to handle high rpm and maintain high oil pressure with the light oils being used. I'm still thinking 0w40, 5w40 etc is going to be better for a turbo build.
You find anything out about internals, let me know. I'm very interested.
|
Oil pressure is going to be key and we learned on the EJ motors what you could and couldn't get away with at various power levels. I plan on skipping the lets see how low e can go oil pressure wise. LOL Those bearing journals are tiny so high oil pressure will be mandatory as power increases. I suspect current oil pressure is low since higher oil pressure does drop efficiency. Its definitely fine for the oem setup as i have raced this car hard on slick tires using a synthetic (probably only available) 0w-20. Honestly i would have run thicker but i wanted dyno numbers to be under similar baseline conditions.