I'd like some opinions on what features potential buyers would require for a rocker arm?
Which rocker:
Intake only, does the most, easier to make (only 2 mirror image shapes), 1/2 the manufacture cost?, or
Intake and exhaust?
Material:
Aluminum (6061 etc.) to save weight, slightly more expensive than steel plate, really should use a HeliCoil® for the adjuster, requires an insert for a pallet tip?, or
Steel (IMHO mild is OK), cheaper, can be slightly smaller, considerably stiffer at the same size, adjuster threads directly to arm, pallet should be hardened?
Higher ratio:
Highest ratio (intake only) that fits all the stock parts (except pushrods)?, or
Highest ratio (intake & exhaust) with new stands and shafts (much more $$$)?
What ratio:
1.6 is almost useless (only adds 8%, .400" becomes .433", .500" becomes .542" etc.)
1.7 looks like a practical goal - +15%, .400" becomes .460", .500" becomes .575", etc. but the pushrod will definitely need more clearance in the head and block
1.8 may be too close for the pushrod?
2.0 isn't possible without re-making every single part, plus head machining
Shaft bearing:
Bronze bushing, cheaper, can use the old shaft, lasts longer?, or
Needle bearings, shaft must be new, excellent or chromed for size and hardness, more $$, dirt sensitive, shorter life expectancy?
Tip:
Pallet (radiused pad) as original?, or
Roller tip, more alignment sensitive, better guide life?
