Finally got the last 8 valves ground for the green Ranger yesterday. Couldn’t get them all perfect, wasn’t sure just how far I could safely take it, but I got 90% or better of the pitting out of them and interesting enough, two of the intake valves (one per head) showed signs of not making full contact and now look like they should. Three cylinders showed oil fouling especially on the exhaust side, but I can’t detect any play or defects but the oil seal things around the valves at the top showed signs of deterioration, so hopefully that’s the issue. I have all new Felpro gaskets and seals so there’s that.
Looking things over, the exhaust ports are a little small in the head but the intake side looks pretty close to a gasket match. Thinking about giving the exhaust side a quick grind to get it a little closer but I can’t find my carbide bits. The lower intake ports where they meet the heads are a good bit smaller than the gasket windows, but since the injectors are right there I’m thinking the turbulence may help atomize fuel better? Not sure if I should give it a little love or not. My aluminum cutter is in my die grinder currently. Really need my garage up so I can organize these tools and have a proper workbench.
Once I do any grinding on this stuff, I can clean it off and re-assemble everything. Still have a few things on my list that I need to solve for, like doing something different with the heater hose lines, I’m not liking the rusty factory ones. But once the motor is mostly back together (heads, lower intake, timing chain and cover) I can set the engine and trans in place and can start working on other things that need worked out.
So quick recap if anyone wants to voice opinions…
1) how concerned should I really be about the oil fouling? #3 was the worst and the two next to it not as bad. Stem seals on all cylinders were deteriorated to a degree. No detectable play or cracks, oil was on both intake and exhaust side, but worse on exhaust, big globs of oily carbon on the valves and in the runners and cylinder side. Block still has factory crosshatching showing.
2) should I bother making any effort to get the lower intake closer to a gasket match or leave it be turbulent?
3) has anyone else done something other than the factory metal heater hose lines and what did you do?