samperry007

Here are some pictures of one of my exhaust ports. I also posted in the 2nd gen section. I was wanting to get some other opinions from people who don't frequent that section. What needs to be changed or fixed? The picture with the pencil mark is of the Rb templet as you can see I decided to do it differently. Oh, This is my first time.

Link to other thread:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/my-ports-my-ports-553800/

mcfly

i cannot tell if you have or not but make sure you have a bevel on the port

samperry007

Any body else?

samperry007

Newer Pictures

drago86

Looks good, You left the stock opening looks like and ported up yes? This is what I do, it is good for NA power; it increases overlap. Factory PP housings are ported like this.

samperry007

The first ones side by side are of stock and one I ported. The last ones are of both of the exhaust ports. I went down more than I went up.

Jeff20B

iTrader: (13)

From what I understand about exhaust ports, and what rotarygod has said, you want the bottom (port opening) to be slightly rounded and the top (port closing) to be slightly squared.

samperry007

Well its to late now to change it. I bolted it up last night. I searched for a week, could not find hardly anything about exhaust ports and very few picture.

drago86

Dont worry about it, squared ports are just more peaky then rounded, I grind mine squarish on purpose. Is the motor turbo or NA?

samperry007

Turbo, If you follow the link you can see the Intake ports.