more power for 91 jack

[simon_munro]

Just wonderin if anyone out the knows wat i can get done to my engine (4cyl, 2.6, petrol, isuzu) to give it a bit more grunt. ive had extractors n a bigger exhaust put on but just lookin for a couple other things i can put into her to get more out of it.

[Dave_STR]

Have you considered supercharging it, the computer by todays standards is out dated big time. A new aftermarket computer will get some more power but not much to warrent the change.

Shave the head, put a new set of bigger valves in.

Sorry but a NA petrol requires big money for a decent power increase.

Dave.

[tazwegion]

Well you're halfway there, improving the gas flow out of the engine should be complimented with improved airflow into the manifold, octane boosters and higher quality fuel (read as Petrol/Avgas 10:1 ratio) will all see improvements however not on the scale of a highly modified engine (as mentioned by the previous poster) :thumb:


FWIW straying from the original manufacturers engine specifications can yield power results but to the detriment of longevity, economy & in many cases reliability (they can become tempramental)