Contemplating exhaust port

[Foximus]

So I just finished working on my ports, and THEN i realize while I was smoothing out the edges I made a hump in the floor of both exhaust ports.

So basically I made the two bottom corners lower than the middle.


Will this be prone to ring grabbing and do I need to concave the floor?

Or can I leave it alone?


Thanks, sorry for a dinky thread.

 

[#ZERO]

Flatten the exhaust port window equal to the piston top at BDC and not any lower.

 

[Foximus]

Well thats what I was shooting for. I just got carried away when cleaning everything up and created these divits on the sides of the ports. Should I lower the middle or leave as is and just make sure theres a good chamfer?

 

[#ZERO]

The exhaust port floor should be even and make a slight bevel around the exhaust port area about 0.080" in width, and tapering in toward the window to a depth of 0.015" on a 10-degree angle.

 

[Foximus]

Yes yes... and I do appreciate your help but perhaps we are misunderstanding.


Here is basically what I have done. not to this extent, I'm over exagerating in the picture but just so you get the point. Seems to me this hump may not allow the ring to slide easily past it. Or is this a non issue if chamfered correctly? Not worring about port power, just if its gonna be a ring grabber

Thanks again.