Thread: Coolant leak from header bolt hole.

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rspears & Pat,... thanks. I went out, drained the coolant, Run a thread tap in it to clean out access teflon, 30 Qtips, and 2 brushes later, dried her out and used red HT silicone. Some in the hole end and coated the bolt well. I'm gonna let her set 2 days before refilling with coolant.

This past week has been a beast with this thing. We started out at a local box parts store asking for Fel pro 1003 head gaskets when we built her. I did not pay attention and they gave me 7733 gaskets, which is still for SBC. 2 weeks ago we developed an external coolant leak between the block & head. World told me that the 1003 was the only gasket to use on it. So, we got the 1003's, and a new set of ARP head bolts, and got that problem took care of. But these 2 bolts has whooped my butt. I hope it works, as I now have no more hair to pull out.

Well, the RTV seems to have taken care of the header bolt leak. Bad news, I'm still getting a coolant seep on the drivers head gasket at the rear of the head at the bottom. Not too bad, but it is there. Doesnt do it until system has a bit of pressure on it. I'm running a 7 lb cap. I cleaned everything off real good when I changed the gaskets, hmmm, I dont know. I havent ran her much, maybe I need to run it more and let the heat get to them to seal them better.