What is the thinking now on blocking the exhaust crossover passage in an intake manifold? This is on a C1 with no smog equipment.
What difference does any of the following make?
1. cast iron vs. aluminum manifold
2. cross over exhaust pipes directly after the exhaust manifold
3. use of an FI spacer in place of a heat riser valve
4. car is only driven in mild weather after some warm-up.
What difference does any of the following make?
1. cast iron vs. aluminum manifold
2. cross over exhaust pipes directly after the exhaust manifold
3. use of an FI spacer in place of a heat riser valve
4. car is only driven in mild weather after some warm-up.
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