Conrod bolts and nuts

barrysweet52

I bought a set of grade  8 bolts for my 1924 conrods and also a set for my 1937 Terra - $18 total. Thought this was cheap compared to Ebay prices. I will have to turn off some of the hex heads in a lathe and grind a flat on the heads. Im curious what nuts people use. High tensile nuts with loctite, castellated nuts with split pins, nuts with pal nuts, any other options? Conelock nuts would make it difficult to guestimate the torque, and nylon lock nuts may be affected by heat. A friend had an original conrod bolt break so I thought I would try to avoid this. Thanks for sharing your thoughts. Barry

bob ward

I'm a fan of nuts with split pins, but there is no reason why the right grade of loctite wouldn't work with grade 8 nuts. AFAIK loctite is frequently used in modern engines.

Geoff

Does anyone supply new palnuts?  Usually they are stuffed after one application.  Modern engines usually get torqued to spec, without locknuts.

GrimGreaser

http://m.aircraftspruce.com/catalog/hapages/ms27151palnuts.php

I got mine from Aircraft Spruce. McMaster-Carr carries them as well.