Roller Rocker Trunion - How can you tell if the trunion is worn?
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Roller Rocker Trunion - How can you tell if the trunion is worn?
I've been reading the threads on the Roller Rocker Trunions. I currently am running Comp Cams Pro Magnums 1.6 that I've had for about 10 years... not racing, mostly a daily driver.
I've connected a scanner (Snap On Counselor II) and was reading the pulse wave vacuum patterns and the intake of #1 is still somewhat low. Meaning, the intake isn't drawing as much vacuum as it should on cylinder #1. Long story. The image below - note the lower hump which is the intake pulse for the #1 Cylinder.
http://www.flickr.com/photos/40569119@N08/3726912041/
It isn't the lifter, it is a brand-new Comp Cams camshaft. One possibility is that the cam wasn't cut right... possible. Another is that the rocker trunion is wearing out.
How can I tell if the trunion is going bad? Is it by feel? Do I remove the rocker and feel for a burr?
I've connected a scanner (Snap On Counselor II) and was reading the pulse wave vacuum patterns and the intake of #1 is still somewhat low. Meaning, the intake isn't drawing as much vacuum as it should on cylinder #1. Long story. The image below - note the lower hump which is the intake pulse for the #1 Cylinder.
http://www.flickr.com/photos/40569119@N08/3726912041/
It isn't the lifter, it is a brand-new Comp Cams camshaft. One possibility is that the cam wasn't cut right... possible. Another is that the rocker trunion is wearing out.
How can I tell if the trunion is going bad? Is it by feel? Do I remove the rocker and feel for a burr?
Last edited by Wild1; Dec 8, 2009 at 11:16 PM.
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