View Single Post
  #5  
Old 06-02-2019, 06:01 PM
mgarblik mgarblik is offline
Ultimate Warrior
 
Join Date: Mar 2005
Posts: 6,992
Default

We are at .006-.0065 on the mains. .004-.0045 on the rods. 70W oil, Eric would have to confirm oil pressure from data system, but I think down track hot we are at 165 PSI+ all the time. As we have made the passages larger and the clearances larger, the oil pressure has dropped to this general range. We have been over 200 PSI at times. As far as tune-up, nitro % and so forth, I really leave that up to Eric and Jerry our nitro tuner. I wouldn't say the non-skirted block has had a conscious effect on our tune. It's still more a function of limited on-track time and the potential astronomical cost of a bad tune-up. Less than a second under power takes a nice engine and turns it into aluminum cole slaw. So we just have to be really conservative and careful with the tune, baby steps. We just don't have a choice. Tuning the wedge head engine is difficult because of all the liquid moving through the cylinders. The Ram Air V layout is weird enough that every cylinder acts a little different as far as what it wants for fuel. The angled spark plugs cause issues on some cylinders under power because they are submerged in fuel while other cylinders are uncovered from the liquid under G-force. It's really different from a Hemi where the spark plugs are up high and centered in the chamber out of the fuel and their are 2 spark plugs. We are running 35-38 LBS of boost which is enough to run well into the 5's with the perfect tune and traction. Like most of the Pontiac guys running high HP engines, we just can't get to the track enough in one season to really sort it completely out. A sponsor would help quite a bit, but we do what we can. We plan to run good this year. Hope to fire the engine in about a week.