OST-015: The long and winding road.....

[oldeskewltoy]

Uzelac Wrote:Nice

BTW. do you have any chart or dyno's, before and after ?
All your work look impressive, even better is the fact that you share your knowledge and work.
And since you are taking the different routes with different heads, it would be interesting to see what made the difference.

Will a flow bench read out be sufficient?



It use to cost me about $150 per chamber to get before, and after readings. $600 per head is VERY costly. I take what I've learned, and applied it to what I do

from another forum Wrote:I'm curious what accommodations you've made for the 7A.

I've made no unusual accomodations for 7A use. The client is using Supertech std size valves, I'm de-shrouding the chambers, and I'm re-tapering the exhaust ports to allow higher volume. I'm also "opening" up the top of the smallport intake port to expose the outer port walls/channel






speaking about deshrouding the chambers, here are chambers #1(left), and #2(right) I've not only deshrouded the chamber, but I've deburred the chamber edge. To get a good idea, look at the chamber edge on the right hand side, chamber 2, note the left hand intake - now look at the edge of the chamber in that area... see the ragged edge. If you look around the left hand view, no such ragged edge