Original Posted By: Larry Neal
Larry,Thanks for your response, it's very informative. My prop is 66X32, I thinkit's in the ball park of what most corvairs run with that are successful. Ican't go the reduction route, I have a starter installed as well as a bellhousing and bearing supporting the prop. shaft. This is my own design usingmy own castings. It works very well. How short ,and what pitch was Bernie'sprop???according to the performance charts the 110 H.P. engine has it's peak torqueat 2800 RPM. This equates to 83 BHP. But there are losses as well that robpower. An Alternator will use about 6-7 h.p. This puts the H.P. more intoyour estimate. If you use the original fan as well then you lose another 13H.P. (I did not... and no heat problems...if anything I may be running a bittoo cold at 165 Deg.) Now for the bad news... I advanced the timing to 35degrees as suggested and detonated a hole in the #6 piston. I was wonderingwhy the engine would not develop the RPM as per my previous setting, so Iperformed an compression test. all cyl. except #6 read 130 Lbs., #6 waszero. Will pull the head and cyl. this week. Bummer.Dom. ----------________________________________________________________________________________