[Land-speed] Rod bolts ( not really LSR)

[Ed Weldon]

Doug-- Back in the 30's there was nothing to compare with modern socket head
alloy steel capscrews strengthwise.  If you can adapt these to the 32 chevy
rod with a little machining work then you're home free.  They're hardened
but not so much that they can't be drilled with a good cobalt drill bit.
You might have to get creative to make the head fit the pocket in the rod.
 3/8-24 x 2-1/4" McMaster-Carr part no. 91251A433   $5.24/box of 10
http://www.mcmaster.com/
Also Flat Head style 3/8-24 x 2-1/2" McMaster-Carr part no. 91253A367  $3.24
ea. gives a different head shape that would likely require you to make up
some special countersunk washers.
You might also want to take a look at their steel shoulder screws, which
have different lower heads.  They come in 1/8" length increments around the
2" length you want.  Note that a 3/8" dia shoulder screw uses a 5/16-18
thread; so you'd need to get the right size nuts.  Note that a shoulder
screw will not stretch when you torque it as well as a standard screw, so it
can't be trusted for preloading and locking from the stretching as well. I
suspect with a stock old chevy 6 the preloading wouldn't have to be that
perfect and you're using cotterpins to lock the nuts anyway.
Ed Weldon

----- Original Message ----- 
From: "DougOdom" <dlodom at charter.net>
To: "Landspeed List" <land-speed at autox.team.net>
Sent: Thursday, October 11, 2007 10:46 AM
Subject: [Land-speed] Rod bolts ( not really LSR)
> I am trying to find some new rod bolts for a 1932 Chev. 194 cid six
> motor. Egge and Kanter do not have them. They are 2.125 long and .375 24
> fine thread with a hole for a cotter pin 2 inch from the bottom of head.
> Would like 12 but could live with 4 of them.
>   Thanks   Doug in big ditch  (805) 489-6228 shop    (805) 458-0802 cell.