Just purely for comparison, roughly measuring the radiused oval shaped unshrouding of the plug in the chamber of the TF’s, the oval is about 20mm x 16mm and no matter how the ground strap orients when tightened there is plug gap clearance 360 degrees. Hope that un-technical use of words makes sense!
Guess costs too much to flip and counter sink from the other side.
A Bridgeport and the proper end mill or carbide tool. What the heck, it's only money! LOL
And that's something you could do at home with a Dremel. There was talk before about how far to go before it starts costing too much. Us street guys that bought these heads don't need much but there are a few things that should be addressed as mentioned in these threads. I feel a correct valve job is #1 on the list. #2 should be deburring and bowl blending and #3 on my list should be gasket matching (if needed). You could run these heads without doing any of the above modifications. But a little extra will make them better.
The SM hole is drilled into the chamber and threaded. A straight threaded hole into chamber. The TF’s take the additional step of tapering or flaring it out to the chamber surface like I said to about a 20mm x 16mm oval, radiused.
have you done all the spark plug holes on you head?
Pictured in post #557.
I don't think anybody's disagreeing that you get what you pay for those trick flows are nice and have all the extra options built into them.. as they should for the money.. just like the sm's are budget-minded and the extras aren't done and allow the do-it-yourself guy to take care of that with no extra cost out of pocket...
LOL... Am I a cheapskate? I always have a Dremel in my hands.....
In my defense all I posted was some pics of how the holes are finished on both these heads, and stated that to me it is an attention to detail thing. I wonder why TF does what they do? On first glance it all looks pretty, and for what you pay, they look pretty, with attention to detail that caters to anal guys like me
