Hi, Planning on building a mk4 1.8 sri track car after xmas. I know nova's/corsas inside out. This will be my 4th mk4 astra (currently have a prodrive kitted sri as my daily driver) I know the mechanicals on the astra off by heart, just im not that clued up on what the best upgrades are, as my astra's have always been my sensible car, so mods were minmal.
Ive tried searching, but all i seem to get is people on 4 stud being told to upgrade to 308mm gsi brakes.
Anyway, im wondering what will be he best setup on a budget (so alcon 4pots arent first choice) Car wil have a 250-300bhp z20let fitted
Firstly, the fronts:
what size disks and calipers will fit under a 17" wheel? 322mm?(what models do they come on std?)
or will it have to be astra gsi 308mm ones
Do i just stick with the std sri later spec setup (what size ar these?) Or is there a worthwhile upgrade?
Will upgrading the calipers require bigger master cylinders to improve pedal feel?