So lately, I’ve been noticing this weird Brown sticky stuff, I’m wondering if there’s a crack in the exhaust bolt hole., or maybe what I was thinking hopefully??? it’s just water dripping down along the head and blowing out on the exhaust port where it Might leak a little? maybe cooking the antifreeze??? I sure hope it’s something simple like retorquing the heads!
I don't want to say this but directly above where that brown smut is accumulating looks like a crack or a rusted spot on the block. I hope not ... but
Or, it could be leaking from the rear of the head gasket, running down and forward then being blown up by a leaky exhaust. ?????????
If you blow the picture up and look above what appears to be a crack, there appear to be streaks in the block that look like someone ground a weld on that area. Then, looking toward the right side of the picture, it appears as though someone has run weld passes on there. There appears to be a weld bead just above and to the right of the header flange. Has this block been repaired? Maybe that's a stress crack from welding.
I think I might get lucky!????? Looks like it’s leaking at the top where the bolt is, so maybe this heads have never been re- torqued, I know the car that it came out of didn’t drive that much or at all. It was a rebuilt 35 Ford roadster. The guy wanted a more modern chassis. My dad bought the whole chassis cheap. The motor was rebuilt, but I don’t think it was ever driven. It has 22 pounds of vacuum and 50 pounds of oil pressure at medium RPM so I know it’s good!!! 150-190 Temp. And wiped off the muck, think the coolant just collected their and has a tiny Exhaust leak cooking it???
Coolant is leaking down from the head to the header flange and you have a small exhaust leak, but it seems you have already figured that out.
I see some discolouration just above where most of the muck is just below the head. Perhaps it’s leaking from there and pooling by the header possibly after you had it out for a run. Does it get wet while driving or after you’ve put it to bed? Edit: I just looked at the pic again and there seems to be some staining near the corner of the head so this indicates to me a fairly simple re-torque situation! I sure hope so....
That stuff has great reviews! Just Leary of that “magic potion” kind of stuff, but… it is 21st century. Maybe? Ok?
If you blow up the pictures and look closely it does appear like the coolant was blown upwards by an exhaust leak at the top rear of the exhaust port....hopefully that's it!
What are you running in the radiator that would make it brown? But I guess brown is better that gray slime from water in the oil!
I would use a can of Moroso Ceramic Seal. You need to follow the directions EXACTLY - especially prior to putting the ceramic seal in (want to clean and flush the engine block as much as possible). Then you have to flush after running it. Amazon.com: Moroso 35500 Ceramic Engine Seal - 1 Pint : Automotive
Well, I torqued a few of the bolts randomly just to check. Some were Loose at 50 pounds. So this morning when it was cold, I torqued the side that was leaking to 60 pounds, drove it to work, no water leaks, then let it sit all day and re-torque both heads to 65 then 70 lbs. before I left for home. A whole bunch of bolts on both heads were probably between 50 and 60 especially around the back of the block around cylinder 4, and 8. The book says to torque iron heads between 65 and 70 so I did, no leaks so far!!! Think that did the trick! I think I’m gonna wait on the K-seal Don’t want gunk in there that doesn’t need to be! However, there is tiny bits of seepage here, and there behind the water pumps between the block. I tried sealing it up, when I had them off. To replace the gaskets. I think it’s just cause it’s kind of pitted on the block a bit, so at some point I might put a little bit of that sealer in there, but it’s not leaking on the ground or anything. Just moist. Maybe later on when I upgrade to the six vein later curved impeller pumps I will use some JB Weld or something on the pits. Boy, the Heads sure plain and boring without those nice little stainless acorns my dad put on there!! But it sure is a pain to get all those off without damaging them!!! I put electrical tape on some channel locks to not chew them up!
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