Originally Posted by mr_mkII
i read in the eski manual for a mkII that it gets its highest power output at 5.3k rpm, now ive got a cam, extractors and borgwarner rally filter but my max power comes in at about 4.5k rpm
anyone know whats the deal with that???
I could guess, but that's all it would be, an (semi) educated guess...
Could be any number of things really.
Cam specs? Fuel filter? Fuel Pump? Airflow (any head work been done)? Transmission problems (or in fact any of the drivetrain)? Distributor problems (point bounce, worn points, any number of other possible problems)? Spark plugs not being gapped currectly?
If it was me, I start with the easiest ones to check - and if you havn't had the points replaced in a while, I'd go the whole 9 yards and replace the points, leads and spark plugs, even if it doesn't fix the problem, it would be far from a waste of time. Then check out the filters, and probably replace them (again, never a bad idea), before checking anything else.
But it sounds to me like the distrbutor, and more specifically, point bounce. Does it seem to rapidly lose power above 4500 rpm, or just doesn't want to rev past that point?
But hey, I could be on the entirely wrong path here...