Howard Jones
Supporter
Jim, I agree completely on the stud upgrade. I my opinion I would stud all aluminum heads on a SBF. They just work so mach better. It wouldn't hurt to made some measurements and find out how much deeper the original hole can be drilled and tapped. I also though that welding up the dammage could work but without anyway to harden the welded area you might add more material but it would be very soft and the heat of welding will soften up the rest of the head in that area making what threads you have left even weaker.
The healy coil idea is probably the best along with the stud upgrade. This might be a very good idea on a new set of aluminum heads if you invision taking it appart a lot. As far as clamping force I don't think that this is the major issue. The gaskets will seal well enough as long as they adhere to the mating surfaces and are held firmly in place. Good gaskets help a lot also. It really only takes a little more than a dozen pounds of torque as long as it is equal on all the fasteners.
Thanks for the reply
The healy coil idea is probably the best along with the stud upgrade. This might be a very good idea on a new set of aluminum heads if you invision taking it appart a lot. As far as clamping force I don't think that this is the major issue. The gaskets will seal well enough as long as they adhere to the mating surfaces and are held firmly in place. Good gaskets help a lot also. It really only takes a little more than a dozen pounds of torque as long as it is equal on all the fasteners.
Thanks for the reply