Van's Air Force
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200 hp plus RV-6 owners
- Thread starter 6 Gun
- Start date
IO-320
I was shopping for an IO-360 in the 200 hp range when Aero Sport Power told me abt the IO-320. 12 lbs lighter, a bit cheaper and with high comp pistons turns 185 hp. Then looked @ the performance graph for Vetterman's 1 1/2 " crossover header should be in the low to mid 190s @ take off power. That is the route I decided to go.
Joe
I was shopping for an IO-360 in the 200 hp range when Aero Sport Power told me abt the IO-320. 12 lbs lighter, a bit cheaper and with high comp pistons turns 185 hp. Then looked @ the performance graph for Vetterman's 1 1/2 " crossover header should be in the low to mid 190s @ take off power. That is the route I decided to go.
Joe
smokyray
Well Known Member
HP vs Weight...
Bruce B. down under reads this forum and was one of the first 200+ HP RV6 guys I know. He installed an HIO-360 in his RV6 and helped me immensely with photos and learning "gouge" from his conversion. He used a Catto 3 blade and kept it fairly light. His performance numbers with the Catto 3 blade is stellar and helped keep the heavier nose weight in check. His honesty and forthright attitude greatly influenced my decision making.
After emailing Bruce I decided to go with an 0-360J2A and Catto 2 blade on my RVX rather than an angle valve. Mainly to avoid the tight cowl fit, extra weight and higher temps associated with the angle valve. I wanted 180+HP without adding a pound of weight over my 0-320A or cutting my pretty cowl. After alot of cranial scratching,goal accomplished albeit at a much lower cost than buying a 340 or Hot Rod IO-320. The J2A also has conical engine mounts which I already had for my 0-320A. I actually reduced my overall weight by 5lbs by utilizing a B&C SD8 Alt/Magnesium (non-fan-belt pulley) flywheel and Sky Tech starter. My RV-X weighs 942lbs empty. Performance?
Takeoff and climb greatly improved, cruise and aerobatic vertical slightly improved. Handling is identical...win win.
V/R
Smokey
Bob,
Bruce B. down under reads this forum and was one of the first 200+ HP RV6 guys I know. He installed an HIO-360 in his RV6 and helped me immensely with photos and learning "gouge" from his conversion. He used a Catto 3 blade and kept it fairly light. His performance numbers with the Catto 3 blade is stellar and helped keep the heavier nose weight in check. His honesty and forthright attitude greatly influenced my decision making.
After emailing Bruce I decided to go with an 0-360J2A and Catto 2 blade on my RVX rather than an angle valve. Mainly to avoid the tight cowl fit, extra weight and higher temps associated with the angle valve. I wanted 180+HP without adding a pound of weight over my 0-320A or cutting my pretty cowl. After alot of cranial scratching,goal accomplished albeit at a much lower cost than buying a 340 or Hot Rod IO-320. The J2A also has conical engine mounts which I already had for my 0-320A. I actually reduced my overall weight by 5lbs by utilizing a B&C SD8 Alt/Magnesium (non-fan-belt pulley) flywheel and Sky Tech starter. My RV-X weighs 942lbs empty. Performance?
Takeoff and climb greatly improved, cruise and aerobatic vertical slightly improved. Handling is identical...win win.
V/R
Smokey
Last edited:
Mike S
Senior Curmudgeon
