I would like to start by saying this endeaver was inspired by @Jack amazing D port thread here. I would also like to thank Jack for sharing his knowledge with the community. I know that I'm not alone in that regard. @Signal made a thread a while back showcasing the flowbench he built as a result of that inspiration here.
No doubt there have been others.
Wannabridin (Garrett) bought an engine built by Hugh (Hugh's Handbuilt) which he introduced in his $Free.99 Project here. The engine contained a D port head which was thought to have been ported by Jack. Jack made mention of what actually happened in this posting
Garrett discovered some delamination issues with the epoxy and posted about it here.
Short story is I reached out and discussed my intention to build a flow bench at the first of the year to work on D porting my 2 heads. He was in no rush and eventually sent me the head to test and rework. Life has caused a bit of delay from my original timeline but things are finally coming together.
I am a firm believer in having a plan of action, so here is an outline.
The bench should be completed in the next day or two.
After completion of the testing and calibration of the flowbench (calibrated within itself for consistent repeatable readings) I will test the head as received for base information. I will also be running parallel testing on one of my stock heads for comparison. I will be pulling molds of the ports before and after.
The ports as well as the chambers will be cc'd before and after as well; verifying they are equalized.
With no knowledge of the epoxy used or it's application I am thinking it will all need to be removed and then rebuilt following Jack's template while taking into consideration the testing results on the flowbench. To facilitate this I will be remolding the port (once it has been reopened) with clay molding and making changes until it has been been optimized. Then the port will be measured and mapped; clay removed; port cleaned and welded/epoxied; retested. Once completed the head will be heat cycled. The intake manifolds also need to have the ramps built into them and gaskets made.
Good bit of work x 3. (Garrett's Head plus my 2).
Fortunately when doing something you enjoy it isn't really work a all.
The updates on this thread should be much more regular and contain some content that I am hoping may be interesting to others, especially the postings regarding the stock head and it's modifications which may well have a much broader interest. There are a few more tidbits as well which will be touched on as the project progresses. I have been anxious to get to this point and I know Garrett has been also. Let the fun begin.
No doubt there have been others.
Wannabridin (Garrett) bought an engine built by Hugh (Hugh's Handbuilt) which he introduced in his $Free.99 Project here. The engine contained a D port head which was thought to have been ported by Jack. Jack made mention of what actually happened in this posting
Garrett discovered some delamination issues with the epoxy and posted about it here.
Short story is I reached out and discussed my intention to build a flow bench at the first of the year to work on D porting my 2 heads. He was in no rush and eventually sent me the head to test and rework. Life has caused a bit of delay from my original timeline but things are finally coming together.
I am a firm believer in having a plan of action, so here is an outline.
The bench should be completed in the next day or two.
After completion of the testing and calibration of the flowbench (calibrated within itself for consistent repeatable readings) I will test the head as received for base information. I will also be running parallel testing on one of my stock heads for comparison. I will be pulling molds of the ports before and after.
The ports as well as the chambers will be cc'd before and after as well; verifying they are equalized.
With no knowledge of the epoxy used or it's application I am thinking it will all need to be removed and then rebuilt following Jack's template while taking into consideration the testing results on the flowbench. To facilitate this I will be remolding the port (once it has been reopened) with clay molding and making changes until it has been been optimized. Then the port will be measured and mapped; clay removed; port cleaned and welded/epoxied; retested. Once completed the head will be heat cycled. The intake manifolds also need to have the ramps built into them and gaskets made.
Good bit of work x 3. (Garrett's Head plus my 2).
Fortunately when doing something you enjoy it isn't really work a all.
The updates on this thread should be much more regular and contain some content that I am hoping may be interesting to others, especially the postings regarding the stock head and it's modifications which may well have a much broader interest. There are a few more tidbits as well which will be touched on as the project progresses. I have been anxious to get to this point and I know Garrett has been also. Let the fun begin.