super rough idle

[RedHeartbeat]

Do you have access to one of the new laser pyrometers? Once it start missing I'd hit all the intake runners and exhuast ports to check for variance.

[NITROUS]

Tore the heads off today and found a bad valve spring. The funny thing is the valve would open and close somewhat normal. So much more Manley springs, they suck in my opinion!! I'm giving the Patriot duals a try now with the 243's. The Taylor wires are giving me hell also. Hopefully I'll have everything back together tomorrow to see how it's going to run. I new there was an intake valve problem with a hot intake runner, everything looked good until I finally had time to pull the springs out.

[Gator]

<div class='quotetop'>QUOTE(NITROUS &#064; Jan 1 2007, 07&#58;32 PM) [snapback]78015[/snapback]</div>

Tore the heads off today and found a bad valve spring. The funny thing is the valve would open and close somewhat normal. So much more Manley springs, they suck in my opinion&#33;&#33; I&#39;m giving the Patriot duals a try now with the 243&#39;s. The Taylor wires are giving me hell also. Hopefully I&#39;ll have everything back together tomorrow to see how it&#39;s going to run. I new there was an intake valve problem with a hot intake runner, everything looked good until I finally had time to pull the springs out.
[/b]

Good Post. I learned something new about sticking valves.

[RedHeartbeat]

I&#39;ve run the Manleys without any issues. I&#39;ve also run the Patriots without issue, but like you there are numerous posts on LS1Tech about Patriot Gold failures (even so far as parts of the springs falling off and being pulled out of the oil pan on the magnet). I think Gunnar sells a platinum series spring, not sure what the difference is.