Thread: Overheating issues, lower intake manifold?

Yeah if the HG was bad I would assume it would show much lower numbers and on different cylinders, considering 1 and 2 are on separate heads. I have everything taken apart at the moment down to the LIM, im going to recheck the torque on everything and see how that goes.

When I was putting on the new intake gaskets I had to get my car back together and couldn't wait for new intake bolts to arrive, i did use threadlocker on them but could this cause a problem with torque readings?

Even when these motors are running perfect there's always something that breaks or needs to be replaced and it always turns out to be the stupidest little thing in the hardest place possible. Well it seems you've ruled out just about everything. While you've got it apart check the coolant passages in the lim and heads, also check to make sure the pipe that screws into the back of the thermostsat housing is free flowing and the return line as well. Other than that I wonder if it could be something stupid like the radiator cap isn't holding the correct pressure or for some reason your fan isn't working or kicking on at the right time. And no the thread locker on lim bolts shouldn't be a problem, unless your going to take them off again it may be difficult to remove them. Taking this thing apart and putting it back together right is not a simple task. So kudos to you on that. Keep us updated on what happens.

Also, how do the plugs on your 2 lower compression cylinders look? I recently had coolant seeping into the front left cylinder "the one next to the water pump" check to see if the plugs look steam cleaned opposed to the others, although this is unlikely like mentioned before your compression probably wouldn't be that high....