MHG bored size

[tokiMK3]

Ok, so I'm planning to order a cometic HG. My question is how do you know what size bore to get? 84? 86? I measured the combustion ring on the old HG that came off the car and it measured at 85,84,84,84,85,84 with a digital caliper. So should I get a 84 or 86 size bore?

 

[suprarich]

The bore size of the gasket needs to be larger than the cylinder bore size. 83 or 83.5mm pistons = 84 mm gasket. 84mm pistons = 85 or 86mm gasket.

 

[badjuju]

So on a motor with stock pistons, you'd want an 84mm, yeah?

Also, does anyone have experience with cometic's other gaskets? mains, etc?

 

[suprarich]

An 86mm will work also, you will just have less gasket material between cylinders.

 

[badjuju]

isn't that... no bueno?