No, I don't think the Fenton set up will allow to much heat to get to the intake. And that was my point, the Fenton plate doesn't allow any circulation so it's not gonna get as much heat as it would if it was passing gas. They've been using that setup for well over 50 years that I'm aware of and as I said, mine ran fine and I've never heard of any complaints to the contrary. Still, it's not the ideal set up but it's better than nothing.
The stock heat riser setup does indeed flow about 90% (appx. 10% leakage) of the exhaust gases under the intake till the coil tightens up and allows the valve to re-direct about 90% of it directly out the head pipe. The heat riser butterfly valves have a lot of leakage around the edges so there is always a little exhaust gas passing across the floor of the intake even when it ‘s warmed up. As far as any conduction goes, sure it happening all over that intake/exhaust setup when the engine is up to operating temps.
The stock heat risers worked for many decades on millions of Cars and trucks made by almost all of the automobile makers. It's still the best set up. But of course when you customize your ride than there are compromises that you have to live with.
Denny Graham
Sandwich, IL
