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Gary · 03-25-2004

The 3.0 6 cyl CIH (basically a 2.0 with 2 cylinders added) in my '84 Senator had a history of running hot. A lot of that problem (and the "diesel" sound) was traced to a blocked cat and exhaust. As I was troubleshooting that problem, Nick Webb turned me on to a heatshield that Opel makes for the 6 cyl. It goes between the sprint style manifold and the F.I. plenum. Installing the heatshield made a huge difference in the underhood and plenum temps as that barrier blocked the heat convection from the exhaust.

I believe Otto also put one in his Bitter with good results.

03-25-2004	#78 (permalink)
Gary Site Admin Join Date: Mar 2002 Location: Swansea, MA Posts: 4,674 Classified Rating: 0% (0)	exhaust heat shield The 3.0 6 cyl CIH (basically a 2.0 with 2 cylinders added) in my '84 Senator had a history of running hot. A lot of that problem (and the "diesel" sound) was traced to a blocked cat and exhaust. As I was troubleshooting that problem, Nick Webb turned me on to a heatshield that Opel makes for the 6 cyl. It goes between the sprint style manifold and the F.I. plenum. Installing the heatshield made a huge difference in the underhood and plenum temps as that barrier blocked the heat convection from the exhaust. I believe Otto also put one in his Bitter with good results.