quote:Originally posted by jb1490:
Have you checked for timing chain stretch? If you have the original timing chain and sprockets, then you will have considerable chain stretch and sprocket wear (original cam sprocket has nylon teeth).
No, I haven't thought of that. With only 18,000 miles I hoped it wouldn't be an issue. The inside of the engine looked like new. In fact you can still see the original honing marks in the cylinders. No wear ridges by the pistons, no gunk collected anywhere.
quote:The sending unit for the temp gauge (or the gauge) could be "deteriorating" with age, giving an incorrect reading.
I might change that just to be safe, but the engine "feels" like it's running hot (pinging too...).
quote:Have you used an IR temp gun to check temps when the cooling system is indicating "high" temps?
No, but I can. Where should I measure those temps and what numbers should I expect of a normal engine temp?
quote:The distance from the bottom seat of the swirl tank's filler neck to the top of the neck (sealing surface to sealing surface) on my SS tank measures .760", and on my original tank it measures .770".
Thanks, I'll measure those tonight.
quote:The swirl tank should always be full (hot or cold) to the top (lower sealing surface), and the overflow tank should be about half full. As the coolant heats up, expands, and builds up pressure, it will force some of the coolant into the overflow tank. This is normal. As the coolant cools, whatever coolant that the swirl tank needs will automatically be drawn back into it (the swirl tank). If the overflow tank is too full, then any excess coolant will be pushed out of the overflow tank (via the tube) and onto the ground (and probably on the car).
Clearly my overflow tank is too full, but that is just an environmental issue, right? I won't impact the engine temp the way a too-empty tank would.
quote:Did you retorque the heads after installing the new head gaskets (after the engine was run)?
No, I didn't. I am not getting any leaks at the gasket, nor am I seeing any coolant in the oil. What indicators should I expect if the torquing was an issue?
Thanks!
Mark