It's a 2wd manual 90 GL. Doubt its the drive train b/c it is at stop out
of gear. I'm starting to think it might be vacuum related. Wondering if
a clogged or mal functioning brake booster check valve could do this?
b/c I am not getting vacuum at the booster and suspected the valve was
the culprit. Once running the engine makes no odd noises so seems like
if it was internal I might hear something while running.

Time for me to stop speculating and listen at the rear and up close to
see where it is actually coming from...

-john

On 5/15/11 10:59 PM, BenT Syncro wrote:
> It would be good to know what sort of Vanagon or T3 derivative this is. For example an auto trans might make a clunk sound as it engages. Or maybe a clanking of the driveshaft on a Syncro. Or the banging of a Swedish Doka  support canopy support of a Vindic canopy.
>
>
> BenT
> sent from my electronic leash
>
> On May 15, 2011, at 9:11 PM, John Goubeaux<john@UCSB.EDU>  wrote:
>
>> 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