compression

TEEFI · tinkerer Joined: 17 Aug 2003 Posts: 66

how much compression would my engine have my Engine is : G200; 40 thou. oversize ACL alloy pistons; balanced cross-drilled crank; lightened flywheel (7.2Kg); G161 Head with ported In/Ex; oversized In/Ex valves; XB Falcon outer valve springs; Waggot stage 2/3 camshaft; Machined combustion chambers; Head decked 20 thou.

RiCE BOi · tinkerer Joined: 20 Jun 2003 Posts: 108

Virtually impossible to tell mate, the only info that can be used is that it's been bored 1mm (40thou), and the G161 head has been decked .5mm (20thou). Other than that, you need to get the chambers CC'd due to the machine/port-work done, and know whether the aftermarket ACL slugs crowns have been dished, raised, or are flat.
Ben Wight just put a post up with all the relavent info for u 2 work it out, but without that extra info it'll be like tryin to pick this weeks lotto numbers.