madgadget
09-04-2014, 05:49 PM
My SST120/XR2 powerhead has larger exhaust ports than my 79' v6 mid section does. This image shows what I mean:
305357
You can see the carbon around the edge of the ports where the ports look small (this is just a mid for sale, that I use as an example)
This has to be damaging to power I'd have thought? Since 1/5th of the gasses hit a solid face and will cause turbulence. I just wondered what year/age midsection etc has the right size ports? I have a 91 135 black max and also a XRi EFI, but I think both of those also have the smaller ports?
Would love to know what is the best option here.
305357
You can see the carbon around the edge of the ports where the ports look small (this is just a mid for sale, that I use as an example)
This has to be damaging to power I'd have thought? Since 1/5th of the gasses hit a solid face and will cause turbulence. I just wondered what year/age midsection etc has the right size ports? I have a 91 135 black max and also a XRi EFI, but I think both of those also have the smaller ports?
Would love to know what is the best option here.