PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

Knock retard in low gear only

Thread Tools
 
Search this Thread
 
Old 06-03-2005, 11:20 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (1)
 
z-ya's Avatar
 
Join Date: Jan 2003
Location: minneapolis,mn
Posts: 1,104
Likes: 0
Received 0 Likes on 0 Posts

Default Knock retard in low gear only

Went to the track last week and logged some runs,on the run I would get
between 2.3 and 2.7 degrees of kr in low gear starting imediatly after dumping
the clutch.No kr in 2nd,3rd,or 4th.Any ideas what is happening here.Moved the
2 step from 4800 to 6400 did the same ****.
Old 06-04-2005, 11:13 AM
  #2  
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,604
Likes: 0
Received 6 Likes on 6 Posts

Default

1st gear torque-rolls the motor more than any other
(most rear wheel torque, pushed back up the driveline).
Look for exhaust banging.
Old 06-06-2005, 04:31 AM
  #3  
TECH Fanatic
Thread Starter
iTrader: (1)
 
z-ya's Avatar
 
Join Date: Jan 2003
Location: minneapolis,mn
Posts: 1,104
Likes: 0
Received 0 Likes on 0 Posts

Default

These are track launches at 4800 to 6400.It blows the tires off instantly and wheel speed goes to 35 mph so I don't think it's loading harder than it is when its hooked
in the upper gears.The kr starts on the clutch release and continues until the second gear shift,even when approching redline in low it continues unabated.0 kr in all other
gears,the only change I have made is a yank crossmember to get the torque arm off the tranny.That does make a bit more noise than the stocker even with a rubber insultator berween it and the body.I hope thats not the issue.




All times are GMT -5. The time now is 06:33 AM.