<VV> ignition knocking on 66 Corsa Turbo

[BobHelt at aol.com]

Hello Ulli,
Here are a few suggestions. First, either use the tachometer or know  what 
the engine sounds like at 3000 rpm. Connect a timing light to the #1 plug  
and rev the engine to 3000 rpm (in neutral, hand brake set) and see what the  
timing is. It should still be 24 deg BTDC. Then see what it is at 4000 rpm. 
 Still should be 24 deg. Then see if you activate the centrifugal advance 
at  speeds higher than 4000 (18 deg max at 4900 rpm). Use a dial-back timing 
light  if necessary.
Let us know the results.
 
Also try reinstalling the points and see if that makes a difference. 
You may not have a real turbo distributor.
 
Regards,
Bob Helt
 
 
In a message dated 3/25/2012 9:21:31 A.M. US Mountain Standard Time,  
info at california-camping.de writes:

Hello  all,

I do not find an answer to my knocking problems.
I have changed  spark plugs, checked ignition about 20 times, I do use high 
octane fuel (105)  and an ignitor II with matching coil. As soon I do get 
close to 3000 rpm and  close to boost the engine starts knocking - very loud! 
It sound dangerous and  I am afraid that it will kill the engine. 
If anybody has any good tech  advice for me please let me know - spring 
starts here in Bavaria and she will  get out of the storage to catch some 
attention ;-).  

Regards
Ulli