So , just to follow up on this thread I determined that the "clunk"
noise I ( sometimes) hear when starting or stopping the engine is the
rear exhaust header hitting the rear engine mount bar.  I replaced the
exhaust headers on the new engine (after marker Danish ones) and along
with poor quality issues ( one of them had a cracked weld at the flange)
it looks like the bend on the rear pipe comes too close to the rear
engine mount allowing it to hit the mount bar. Not sure if I can get a
muffler guy to fix this or not but at least i know what is causing it.

I'm surprised no one else has had this problem as well, as I suspect a
lot of people are using the aftermarket pipes being sold. These were
purchased from Van Cafe.

-john

> Guys,
>
> I have roughly 500 + miles on a new GoWesty 2.2 engine that I just
> installed and am curious about an odd noise it makes, but only when it
> is warm, eg been brought up to temp. On startup, ie cranking, just
> before it starts and when turning of the engine there is a small clunk
> noise. Almost as if before and after  ignition takes place a compression
> sound as the engine comes to a stop. The engine runs fine and there are
> no odd noises while running only at start and stop. I have not been able
> to listen to it back at the engine compartment yet but am planning to do
> so. Nothing is loose that can explain this and maybe it is a normal
> sound and is compression on these engines? Oddly it only exhibits this
> noise when hot though. Could it be a loose head? Sticking valve?
>
> Logically I am being very careful to break it in properly and am
> listening and watching its behavior carefully and want to ensure that
> this is not something that is going to end up being an issue down the
> road.
>
> Any ideas ?
>
> -john