I am restoring a 1974 Ford F100 -360 engine. After the rebuild- full engine restore- we put the engine in the truck and made the minor adjustments and it started and ran good, but we noticed water/anti-freeze dripping from the back of the engine at the block - bell-housing seam.
We ran two treatments of Bars Stop Leak tablets through the system and could only slow the leak down. We re-pulled the engine and the freeze plug was OK, but we noticed a small dimple in the cast iron where a small bead of water dripping. I was able to take an awl and with a little pressure put the awl into the block - water jacket area. The hole is approximately 3/16" diameter.
Discussed this situation with a cast iron welder and he stated to risky to weld, it appears to be to weak of a spot. ANY IDEAS?
Could I set a screw in the hole and epoxy the screw to plug the hole? Would I need to tap the hole? Any suggestions or ideas are appreciated.
Thanks.
I am restoring a 1974 Ford F100 -360 engine. After the rebuild- full engine restore- we put the engine in the truck and made the minor adjustments and it started and ran good, but we noticed water/anti-freeze dripping from the back of the engine at the block - bell-housing seam.
We ran two treatments of Bars Stop Leak tablets through the system and could only slow the leak down. We re-pulled the engine and the freeze plug was OK, but we noticed a small dimple in the cast iron where a small bead of water dripping. I was able to take an awl and with a little pressure put the awl into the block - water jacket area. The hole is approximately 3/16" diameter.
Discussed this situation with a cast iron welder and he stated to risky to weld, it appears to be to weak of a spot. ANY IDEAS?
Could I set a screw in the hole and epoxy the screw to plug the hole? Would I need to tap the hole? Any suggestions or ideas are appreciated.
Thanks.
You put 2 cans of bars in a new engine. Whatever you end up doing to fix it make sure you flush all that crap out. It will ruin your radiator or heater core in no time at all.
If you can drill and tap the hole and put a plug in it with some sealer on it
Cant hurt to try a pipe plug(a straight thread plug may not seal under presure). The block is scrap as it sits, so if it doesnt work youre still in the same position. If this appears to be rust thru of a thin spot, try to drill/tap to a size larger than the thin spot(1/4"npt). Drill in steps, its easier, and will allow you to check the thickness of the wall as you go.
Heck, a 3/16 hole - I would just drill and tap it out for a 1/4 or 5/16 NC bolt, slobber the bolt and a flat washer with J-B weld and bolt it in place. The pipe plug fix will work as well but many folks just don't have those taps. Either way will hold just fine. Unfortunately there will probably be more rust holes coming.
I would probably start looking for another 360-390 engine as well, preferably a 390 as they are s-o-o-o-o much better.
Several years ago I helped put a 331 SBC in my friends Vega the night before a race and found a crack 4 inches between #3 and 5 cylinders. At 8 PM we wire wheeled it, cleaned with acetone and did a big smear of JB Weld. Put heat lamps on it over night. At 6 AM we fired it up..no leak, ran it the entire season. If you do like others suggested, drill, tap and plug, then JB over it all, I think you'll be OK.
Clint Cumings outlined it pretty well. Pinning it properly will give a lifetime repair.Drilling it and tapping to a 1/4 or 3/8 pipe plug would be permanent too.If it is close to moving parts , like the flex plate , just grind it flush after installed.
Thanks for all the helpful information. Has anyone heard or used Hard-Blok? It is an engine block filler for racing engines. Could I use this to close the hole?
Thanks for all the helpful information. Has anyone heard or used Hard-Blok? It is an engine block filler for racing engines. Could I use this to close the hole?
HardBlock is used for completely filling the waterjackets to increase the strength of the bottom of the block. It is very cement like. It blocks off the cooling passages, which tends to render the block useless for street use(no cooling). It is not a patch of cracks or holes
I am restoring a 1974 Ford F100 -360 engine. After the rebuild- full engine restore- we put the engine in the truck and made the minor adjustments and it started and ran good, but we noticed water/anti-freeze dripping from the back of the engine at the block - bell-housing seam.
We ran two treatments of Bars Stop Leak tablets through the system and could only slow the leak down. We re-pulled the engine and the freeze plug was OK, but we noticed a small dimple in the cast iron where a small bead of water dripping. I was able to take an awl and with a little pressure put the awl into the block - water jacket area. The hole is approximately 3/16" diameter.
Discussed this situation with a cast iron welder and he stated to risky to weld, it appears to be to weak of a spot. ANY IDEAS?
Could I set a screw in the hole and epoxy the screw to plug the hole? Would I need to tap the hole? Any suggestions or ideas are appreciated.
Thanks.
how far further has it rusted out though than the hole you made ?
What about the other waterways - time for a new block I fear
Stephen
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