pcrussell50
Petty Officer 1st Class
- Joined
- Sep 21, 2008
- Messages
- 296
specifically for a '59 rds21b 35hp super seahorse
I was going through the lower unit gearcase and munged up the slotted screwdriver headed 1/4-20, stainless bolts. unhappy with the idea of using slotted bolts again, and no telling if they are still available or at what cost. I had an idea. I went and got some stainless bolts from arp, with a 12-point head on them. afaict, 12 point heads when used withva 12 point socket tolerate the most torque before stripping. now the trick came because the shoulders were too wide. .. I had to "turn them down", except I don't have a lathe. so here's what I did: I got a 1/4-20 turnbuckle from big orange racing supply and
just barely threaded it in. then I put it to a bench grinder, letting it turn slowly asvtue grinder whizzed away at it. voil?. perfectly round narrowed shoulders. and arp's legendary quality.
I was going through the lower unit gearcase and munged up the slotted screwdriver headed 1/4-20, stainless bolts. unhappy with the idea of using slotted bolts again, and no telling if they are still available or at what cost. I had an idea. I went and got some stainless bolts from arp, with a 12-point head on them. afaict, 12 point heads when used withva 12 point socket tolerate the most torque before stripping. now the trick came because the shoulders were too wide. .. I had to "turn them down", except I don't have a lathe. so here's what I did: I got a 1/4-20 turnbuckle from big orange racing supply and
just barely threaded it in. then I put it to a bench grinder, letting it turn slowly asvtue grinder whizzed away at it. voil?. perfectly round narrowed shoulders. and arp's legendary quality.
