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Some of you might recall that after my shortblock rebuild, I had coolant seeping up and pass the threads on the ARP head studs. I called ARP and they said it is not uncommon for studs in a water jacket to act like a wick and the coolant just works its way up the stud. I pulled the heads and all the studs and reinstalled them with pipe thread sealer. Pan and oil cooler was also pulled and oil lines blown out. Same result
Another call to ARP and they say it is not uncommon (I hear an echo
) to still have it leak even with thread sealer. They recommended Aluma-Seal which major engine builders they deal with also recommend. Guaranteed to stop the leak and not clog the cooling system
. Not wanting to pop for another set of OEM head gaskets, etc, I decided to try it last night. It worked
However, the engine had to idle for about 30 mins before it stopped leaking and of course, more coolant in the engine. So, I am going through the cleanup routine again.
I plan on doing a coolant pressure test to make sure I have no more leaks then put it back together and hope nothing is damaged.
Not very comfortable with the current fix so somewhere down the road I might pull the studs and replace them with bolts using the technique suggested in an earlier post w/o pulling the heads.
Anyone else ever experienced this? Any comments or suggestions?
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Scottie's GNZ

Another call to ARP and they say it is not uncommon (I hear an echo



I plan on doing a coolant pressure test to make sure I have no more leaks then put it back together and hope nothing is damaged.
Not very comfortable with the current fix so somewhere down the road I might pull the studs and replace them with bolts using the technique suggested in an earlier post w/o pulling the heads.
Anyone else ever experienced this? Any comments or suggestions?
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Scottie's GNZ