Guys,
I am just completing a 3.5 Turbo with 7.5:1 compression with all of the upgrades for performance to rev to 8K once in a while. However, I am running a CIS system with all of the intake and exhaust ports bored out to 38M. -- 935 valves, titaium retainers, performance springs, C2 Cams, entire engine and crank balanced including clutch. Palter rods, Andial 3.5 cylinders and pistons. Andial fuel enrichment sytstem. Custom 964 wide open exhaust -modified. Very big custom configured turbo
I have heard that it is a waste of money to upgrade this engine to twin plugs since the compression is not that high? Plus I would not like to put more money into the engine since I may change it to EFI some day.
Is there and advantage to adding twin plugs to this engine. Is there some other system that I can add meanwhile which will increase the spark over the stock CD unit which can just be bolted on. Or is there someone who builds a special hot spark system for a CIS engine like this that can be just be bolted on?
