Joined
·
37,272 Posts
Well, found a few more sources of leaks. All self inflicted. Morons. I have morons on my team.
1) Tapered brass bushing for the oil pressure gauge line; I suppose I didn't tighten it enough. Cleaned it all up, used a different type of thread sealer and tightened the sh!t out of it.
2) The OEM block off plate for the fuel pump into the side of the crankcase. For some reason I thought reusing the gasket that was on it was a good idea. Cut a new one, dressing - buttoned it up.
3) There's a stud that sticks out the front of the timing chain cover. Inside the cover it forms the hinge for the chain slider that the tensioner acts on. It has a nut on the threaded portion that passes through the cover. Turns out, oil can and does work it's way past that stud and runs down the front of the cover. Removed the nut, washer -- cleaned up, smoothed the surface of the cover where it passes through, gooped the stud, cover, washer, threads and nut up with non-hardening dressing. Torqued it down and wiped off the excess.
4) Ordered a new oil pan gasket. The replacement that came in the Rock Auto gasket set didn't fit. The holes weren't punched correctly and the overall length was a bit off. Since I knew the engine had been freshly built and only run for an hour or two all those years ago, I convinced myself that I could simply clean up and reuse the gasket on the engine. (see #2 above). Pretty sure I had a leak from the driver's side rear corner. Ordered up a FelPro from Rock Auto ($7.82). The trick will be working it past the oil pump to get it in place without being able to completely remove the pan (crossmember in the way). Cork/rubber composite (all that's available) - I'll coat it liberally with lithium grease before install.
5) There's an access port on the front of the head that allows the chain sliders to be inspected and replaced. An oval stamped steel piece about 2.5" x 4", flat flange with only 2 bolts (across the 2.5" side) holding it to the head. It too was leaking oil down the front cover. Made a new gasket - going to use a bead of The Right Stuff on either side of the gasket. Snug til squish, let cure for 24hrs, then final tighten.
6) Got the water pump surface so flat that I can't get an .003" feeler under it anywhere except for a 1" section where I've got about a .005-.006" gap. I know that sounds small and I can't make the pump "rock" at all anymore. But I don't want to take any chances on it this time. So I added just a bit more epoxy to that 1" section and I'll get it squared away tomorrow. Made new gasket and I'll use a bead of The Right Stuff on both sides as in #5.
7) Made new gaskets for each side of the front cover. Filled a couple of small gouges with epoxy, sanded smooth. Can't get an .003" blade anywhere under my square. I'll use a bead of The Right Stuff on both sides of the gaskets.
8) Cleaned up the interface between the top of the cover and the bottom of the head. I'll lay a bead of The Right Stuff on top of the cover before installing the head/torquing. Good long cure before starting.
9) Made new t'stat housing gasket. Checked for smoothness/flat. Couldn't get an .003" feeler in anywhere. Coated gasket completely with The Right Stuff. Tightened bolts til I got some squish. Waited 24 hours, then final tighten.
No evidence of any leaks at the intake or exhaust gasket. The engine ran for only about 3-5 minutes total. Chambers, piston tops, head gasket all looked brand new. But I ordered a new HG just to be on the safe side. Zero evidence of coolant in the oil pan or oil in the cooling system. Silver lining.
1) Tapered brass bushing for the oil pressure gauge line; I suppose I didn't tighten it enough. Cleaned it all up, used a different type of thread sealer and tightened the sh!t out of it.
2) The OEM block off plate for the fuel pump into the side of the crankcase. For some reason I thought reusing the gasket that was on it was a good idea. Cut a new one, dressing - buttoned it up.
3) There's a stud that sticks out the front of the timing chain cover. Inside the cover it forms the hinge for the chain slider that the tensioner acts on. It has a nut on the threaded portion that passes through the cover. Turns out, oil can and does work it's way past that stud and runs down the front of the cover. Removed the nut, washer -- cleaned up, smoothed the surface of the cover where it passes through, gooped the stud, cover, washer, threads and nut up with non-hardening dressing. Torqued it down and wiped off the excess.
4) Ordered a new oil pan gasket. The replacement that came in the Rock Auto gasket set didn't fit. The holes weren't punched correctly and the overall length was a bit off. Since I knew the engine had been freshly built and only run for an hour or two all those years ago, I convinced myself that I could simply clean up and reuse the gasket on the engine. (see #2 above). Pretty sure I had a leak from the driver's side rear corner. Ordered up a FelPro from Rock Auto ($7.82). The trick will be working it past the oil pump to get it in place without being able to completely remove the pan (crossmember in the way). Cork/rubber composite (all that's available) - I'll coat it liberally with lithium grease before install.
5) There's an access port on the front of the head that allows the chain sliders to be inspected and replaced. An oval stamped steel piece about 2.5" x 4", flat flange with only 2 bolts (across the 2.5" side) holding it to the head. It too was leaking oil down the front cover. Made a new gasket - going to use a bead of The Right Stuff on either side of the gasket. Snug til squish, let cure for 24hrs, then final tighten.
6) Got the water pump surface so flat that I can't get an .003" feeler under it anywhere except for a 1" section where I've got about a .005-.006" gap. I know that sounds small and I can't make the pump "rock" at all anymore. But I don't want to take any chances on it this time. So I added just a bit more epoxy to that 1" section and I'll get it squared away tomorrow. Made new gasket and I'll use a bead of The Right Stuff on both sides as in #5.
7) Made new gaskets for each side of the front cover. Filled a couple of small gouges with epoxy, sanded smooth. Can't get an .003" blade anywhere under my square. I'll use a bead of The Right Stuff on both sides of the gaskets.
8) Cleaned up the interface between the top of the cover and the bottom of the head. I'll lay a bead of The Right Stuff on top of the cover before installing the head/torquing. Good long cure before starting.
9) Made new t'stat housing gasket. Checked for smoothness/flat. Couldn't get an .003" feeler in anywhere. Coated gasket completely with The Right Stuff. Tightened bolts til I got some squish. Waited 24 hours, then final tighten.
No evidence of any leaks at the intake or exhaust gasket. The engine ran for only about 3-5 minutes total. Chambers, piston tops, head gasket all looked brand new. But I ordered a new HG just to be on the safe side. Zero evidence of coolant in the oil pan or oil in the cooling system. Silver lining.