5/29/2023 0 Comments Efi color profiler suite 2.2So as time allows it, I will be modifying this intake manifold, flow testing it, and then fitting it to Samdog's roller-cam 2.5 litre engine in his 1975 Sportwagon, along with a programmable EFI system (probably Megasquirt). This intake manifold will then fit under the hood of most Opels thanks to its' lower profile, and it has the larger runners so necessary to provide airflow to a 2.2 or 2.4 head. The 2.4 EFI manifold flows tons better, but it is so tall it does not fit under the hood of any US-spec Opels (it will in fact barely fit under the hood of a Kadett but the throttle body will almost hit the radiator!).Īn alternative which our European friends have discovered is to use the 3.0 litre inline 6 intake manifold, and cut off two of the runners, then weld the throttle body flange back to the plenum to create a 4-cylinder intake manifold. It just chokes the airflow horribly, reducing the 2.2's intake port flow down to the levels of a 1.9 head with EFI (at that point why bother with the 2.2 head?). One major problem for those looking to run EFI on a 2.2 or 2.4 head is the lousy small-runner 2.2 intake manifold. This engine shares the intake port locations with those of a 2.2/2.4 CIH head, which is to say, about 5/8" higher than those of a 1.9. It's an intake manifold for an Opel CIH 3.0 litre inline 6-cylinder engine. I just got this in the mail today, thanks to Hiro (Hiroshi) in France.
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