Ted,
The rockers should center. Take a look at the factory rockers and the wear pattern on the rocker tip and valve tip. The 1.7 ratio rockers actually develop the ratio by moving the pushrod seat closer to the fulcrum. The distance from the fulcrum to the tip of the rocker doesn't change. The reason we went through so many heads to find a matched set is because of the lift we are running. We needed to make sure we were right on. Additional lift always generates additional load. If you are contemplating roller rockers, with a stock cam, I would select the 1.7 ratio rockers over the 1.6's. If you are changing cams, select a cam rocker combination that gives you the desired lift and duration figures you need. The only way to correct an out of alignment condition (studs not where they should be), would be to machine and put them back into the correct location. You can do this by installing larger rocker arm studs, either 3/8-16 or 7/16-14 studs.
Frank
---------------------- Forwarded by Frank T Holloway/CA/KAIPERM on 01/17/2000 12:53 PM ---------------------------
TEDSDAKOTA@aol.com on 01/17/2000 11:50:00 AM
To: dakota-truck@buffnet.net@Internet
cc: (bcc: Frank T Holloway/CA/KAIPERM)
Subject: Re: DML: Re: 1.7 v. 1.6 roller rockers
make sure the rocker centers on top of the
valve......
Frank
Great info Frank, thanks. I'll go with the 1.7's..BTW if they don't
center...??
Ted O.
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:46:50 EDT