Exhaust port size

I would like to know what is the exhaust port size of a stock bbm? Or what is the size they should be? :yawinkle:
I'm drawing a dxf (CAD picture) of exhaust flange (for laser cutting), but all I have is exhaust sealings for my measurements.
Help would be appreciated, and the dxf will be shared, if You guys want to cut these..
I could allso have these cutted for You, but sending them from finland to states could be expensive, i think...

O yeah, the size in my drawing right now.. width: 1.7913 inch, height: 1.30 inch
(w:45,5mm h:33mm)
Should I change it, or go there and let the laser burn? :glasses7:

Here is the size Mr Gasket header gaskets are 2.080 X 1.71

just an idea... water jetting is much cheaper... and you can just take them a scale drawing, costs like 12 bucks a pr...

Thanks Purple Haze! Sounds like pretty big for me. Is it a lot bigger than stock?

805moparkid said:

... costs like 12 bucks a pr...

Click to expand...

That is cheap. It costs about 40 to 50€ a pair in finland if you want only one pair.
But laser cutting, fine beam plasma cutting, and water jetting is all free for me.

Never compared them to stock ports.