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-   -   SBC rocker arm nuts (http://www.hotrodders.com/forum/sbc-rocker-arm-nuts-230976.html)

StudebakerTom 03-20-2013 03:40 PM

SBC rocker arm nuts
 
As a newby to Chevy engine building, I'm not sure which way to seat the nuts on the rocker arms. Do they go tapered end down or flat side down, as I thread them in? I'm using a Haynes book and honestly, it's dreadfully written.

alkey 03-20-2013 04:20 PM

rocker arm nuts
 
rocker arm on stud first,pivot ball next then nut flat side down

StudebakerTom 03-20-2013 06:09 PM

Thank you much!

cobalt327 03-20-2013 11:53 PM

Quote:

Originally Posted by StudebakerTom (Post 1658738)
As a newby to Chevy engine building, I'm not sure which way to seat the nuts on the rocker arms. Do they go tapered end down or flat side down, as I thread them in? I'm using a Haynes book and honestly, it's dreadfully written.

If you're using stock lock nuts, they use a disrupted thread on the rounded side (facing up, below), so getting the nut to start on the stud is nearly- if not completely- impossible, unless the nut is correctly orientated on the stud (flat side down, as said). Replace these lock nuts if they've been used much; the self locking function loosens w/use.

Self locking rocker nuts can do a number on aftermarket studs, so use polylocs when possible. In some cases polylocs cause clearance problems w/the valve cover so check first. Using a thick or doubled gasket will sometimes give enough clearance. Using polylocs on stock studs will not always work- the polylocs need an even surface for the set screw to register on, often stock studs are uneven on the top.

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