Notices
944 Turbo and Turbo-S Forum 1982-1991
Sponsored by:
Sponsored by: Clore Automotive

Detonation when engine is cold?

Thread Tools
 
Search this Thread
 
Old 02-14-2004, 11:49 AM
  #1  
alpenweissisnice
Addict
Rennlist Member

Thread Starter
 
alpenweissisnice's Avatar
 
Join Date: Dec 2002
Location: Lexington, KY
Posts: 829
Likes: 0
Received 0 Likes on 0 Posts
Default Detonation when engine is cold?

I'm setting myself up for flame-age, but here we go:

I was out for a drive this morning; I normally let the car get into normal operating range before climbing into the boost...However, today, a 911S shot by me and, well...you know...

Anyway, when I rolled on the boost, definitely heard the sound that detonation has been described to make - marbles in a coffee can, that kinda noise. Backed out of the boost, let the car warm up, WOT and - no more marbles in the coffee can...

So, my question is this: Can a 951 that normally does not experience detonation (good AFM ratios on two different dynos - rich, if anything) experience detonation due to a cold engine?

Thanks! B

PS - Also was reminded that tires like to be warm before you ask them to handle too much torque...
Old 02-15-2004, 07:04 AM
  #2  
Danno
Race Director
 
Danno's Avatar
 
Join Date: Jul 2001
Location: Santa Barbara, CA
Posts: 14,075
Likes: 0
Received 3 Likes on 3 Posts
Default

What was the temperature outside? Could be the air-temp sensor is going bad?
Old 02-15-2004, 11:12 AM
  #3  
alpenweissisnice
Addict
Rennlist Member

Thread Starter
 
alpenweissisnice's Avatar
 
Join Date: Dec 2002
Location: Lexington, KY
Posts: 829
Likes: 0
Received 0 Likes on 0 Posts
Default

27F...



Quick Reply: Detonation when engine is cold?



All times are GMT -3. The time now is 04:38 AM.