One thing to remember:
ANYTIME you change the rocker arm in any motor, you need to make sure that
the valve springs are matched (Coil bind).
I contacted Crower for the 1.6:1 set for my 1997 V6 Dakota and they stated
this:
"The 1.6 Rockers will work with the stock coils but you need to replace the
Valve Springs when using the 1.7's."
The 1.6:1 set works great in my truck and the mid-range power has definitely
increased.
-----Original Message-----
From: Roderic Vaughan <rodeaux@cwix.com>; Jon Smith <jdsmith4@hotmail.com>
To: Mailing List Dakota <dakota-truck@buffnet.net>
Date: Wednesday, December 09, 1998 5:56 AM
Subject: DML: 1.7 rocker arms
>On an internally stock motor, is there any performance advantages or
>hazzards by changing to a higher ratio rocker arm? Wouldn't this
>effectivly increase the lift/duration of the stock cam since the valves
>would be physically traveling further?
>
>Jon "I'm no engineer" Smith
>
>There is a article in the january 1999 issue of Mopar Muscle that put a
set
>of 1.7 roller rockers on a 3.9l V6.They said that it would not cause any
>problems .They showed the dyno sheets on the engine picked a few horses.The
>article said that it was a fairly easy mod.
>Hope this helps.
>
>Roderic
>98 Sport+ 5.2l 4x4
>
>
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:11:24 EDT