Well guys, I have been busy and the following pic's will show. I am ready now to finish with the new brass valve guides and the valve grind. The pic's show the unfinished hardened seats and the Singh grooves cut into the heads. I must say I would never attempt this without a dremel tool. It is the tool to use as it is so easy to control.
I must admit that I was shaking when I first went to work cutting the grooves. It is very unnerving to start cutting on some perfectly good heads knowing that one slip could undo everything and make a hunk of junk out of them. I hope it will have been worth it.
Supposedly it will allow the use of lower octane gas with no pinging or knocking. It also is supposed to allow the leaning out of the jets in the carb--makes better gas milage. And according to the articles it also is a plus on lower operating temps of the motor. We'll see! I am going to put 02 bungs in the header collectors to monitor it.
Also shown is the exhaust and intake ports after I ported them out. They are quite a bit bigger wouldn't you say? I cut them to match the gaskets so they now match. I also went inside and cut some smooth turning radiuses. Cut out the valve pockets and polished them for full flow. I just wish I had a flow bench to tell if I made any progress. But there must have been some improvement for all the work. It kept me busy while I was waiting for my Bulltear parts--lots of them!
Here's the pic's:
I found some ss valves with undercut stems. 2.020 int. and 1.688 exh. valves. Now if I only knew the proper angles to use for the 3 way grind! Hellooooo out there!
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