ALERT!! SOUND THE ALARM!!..
I went for the regular 170cc complete SB heads, a billet nitrous bottle bracket, and the $7 billet handle dipstick (why not?).
As my luck would have it one head looks great (visual check only), just the usual shavings in tapped holes below the helicoils:
While the other had such bad core shift in one intake port that that you can stack pennies behind the ledge. It looks like somebody hit both sides with a carbide and let it go.
Of course, the port is broken through into the bottom of the valve cover hole, but worse than some of the CNC ported ones:
Here is the step from inside, looking back with a bore scope, it must be 3/16"+:
I would have just cleaned it up when I do the other touching up, but I don't know what else is off or if there's thin spots with water around it anywhere. Jason at Speedmaster had me send this one back (their pre-paid label), they got it back at the first of the week, and I got an email from him yesterday that they have sent a replacement. I hope this next one is okay, fingers crossed!
I went for the regular 170cc complete SB heads, a billet nitrous bottle bracket, and the $7 billet handle dipstick (why not?).
As my luck would have it one head looks great (visual check only), just the usual shavings in tapped holes below the helicoils:
While the other had such bad core shift in one intake port that that you can stack pennies behind the ledge. It looks like somebody hit both sides with a carbide and let it go.
Of course, the port is broken through into the bottom of the valve cover hole, but worse than some of the CNC ported ones:
Here is the step from inside, looking back with a bore scope, it must be 3/16"+:
I would have just cleaned it up when I do the other touching up, but I don't know what else is off or if there's thin spots with water around it anywhere. Jason at Speedmaster had me send this one back (their pre-paid label), they got it back at the first of the week, and I got an email from him yesterday that they have sent a replacement. I hope this next one is okay, fingers crossed!
