First stab a porting Porsche heads please critique
 

So I got a chance to play with a set of 3.2 recently. Not much to do they are really Good out of the box a little trimming around the guide boss area and flattening a widening the short side a bit going. To to a radius cut in the exhaust and blended 3 angle in the intake after I install the 8 mm guides so far so good.

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They look really good

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Dont know what is good or bad, but your workmanship looks incredible!

David

Thanks I Just did Some minimal clean up these a for a buddy of mind he building a 3.2 and I needed to fund my Ducati engine rebuild.

Very nice! Looks to have the perfect sheen on it... You can polish the exhaust side though..

Ports look clean. It might be advantageous to try and get them on a flowbench for review. That said, as long as you're not hogging out lots of material, your should not have to worry too much about slowing velocity.

Polishing the exhaust ports would probably not result in and gains if anything I would like to use a barrier coating in the ports.. As for the intake of the where mine I would have left them rough like I did on my turbo mustang heads I did this is done with just a carbide burr

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Looks gooder enough !
For perfection, you could CC them and make sure they are all close.
If you are racing you can get rid of some guide.
For street not so much.
Make sure there is no "overhang" from the valve seat on the back side of the head .
The port should flow right on past the seat, so to speak.

Here is an update after installing the guides and machining we used 5/16 manley stuff along with some goodies from extreme cylinder heads..

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Beautiful work.. but please tell me that isn't a little crack by that valve guide?

Yes it is..

crack
 

I thought so but it is on the intake side a little cooler.

Ah I was going to ask about that. So on the exh side it would be more reason for concern due to higher temps?

With these type of guides there now way for it to fall through if it falls out

Nice work.

Are the Manley valves sodium filled? Maybe with modern materials it is not needed?

No they're not sodium there about 50 bucks a pop stainless valves with 5/16 stems

Congratulations the work you have done is superlative

regards

Wow! Beautiful job.

Thank you all for your kind words working on another set for a carbed engine with my texturizing

So here is an update on the carbed 3.2 heads still work in progress. These will be getting new guides as well
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