Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Need Advice On Belt Throwing Problem!!!

Thread Tools
 
Search this Thread
 
Old 07-24-2006, 09:37 AM
  #1  
TECH Fanatic
Thread Starter
iTrader: (1)
 
TigerFan187's Avatar
 
Join Date: May 2004
Location: Louisiana
Posts: 1,586
Likes: 0
Received 0 Likes on 0 Posts
Default Need Advice On Belt Throwing Problem!!!

I just got a new cam in last week and this created the need to raise the shift points and rev limiter. They are arounf 6200-6400 and the limiter is set around 6900 or 7000. I dont have my laptop with me and its been a long weekend but regardless you see that they arent that high. Ok so on to the problem. Damn near EVERYTIME I do a WOT run it throughs the AC belt. Its no damaging it at all just throughing it. I know that dropping the shift points,etc.. could be the fix but thats not acceptable to me. I know that alot of the Vette guys have these problems and the change the tensioner out but I didnt know if anyone here has had this problem and if so what did you do? Thank!
Old 07-24-2006, 09:50 AM
  #2  
TECH Fanatic
iTrader: (1)
 
Join Date: Sep 2003
Location: Chesapeake, VA
Posts: 1,009
Likes: 0
Received 0 Likes on 0 Posts
Default

The only time I have ever had ANY belt issues is once when I didn't get the crank pulley tight enough and it started walking out. If you just got a cam in, is it possible that the crank pulley is not fully seated or walking? Did it ever do that before the cam change? Just a thought.
Old 07-24-2006, 09:51 AM
  #3  
9 Second Club
iTrader: (7)
 
Rhino79's Avatar
 
Join Date: May 2005
Location: Cabot, AR
Posts: 3,127
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by TigerFan187
I just got a new cam in last week and this created the need to raise the shift points and rev limiter. They are arounf 6200-6400 and the limiter is set around 6900 or 7000. I dont have my laptop with me and its been a long weekend but regardless you see that they arent that high. Ok so on to the problem. Damn near EVERYTIME I do a WOT run it throughs the AC belt. Its no damaging it at all just throughing it. I know that dropping the shift points,etc.. could be the fix but thats not acceptable to me. I know that alot of the Vette guys have these problems and the change the tensioner out but I didnt know if anyone here has had this problem and if so what did you do? Thank!
I shift the Hauler's 408 at 6800-6900 and it doesn't throw it.....maybe the tensioner.
Old 07-24-2006, 10:14 AM
  #4  
TECH Addict
iTrader: (9)
 
bud8fan's Avatar
 
Join Date: Dec 2004
Location: calallen,tx
Posts: 2,453
Likes: 0
Received 0 Likes on 0 Posts
Default

check the belt allignment on the crank pulley.....your crank bolt may be loose right now also...
Old 07-24-2006, 10:31 AM
  #5  
Launching!
 
EvilChevy's Avatar
 
Join Date: Oct 2005
Location: Sand and Jello,Texas
Posts: 216
Likes: 0
Received 0 Likes on 0 Posts
Default

Tensioner needs replacement.. A guy with A cam swap came to my shop with that problem and that was how we solved it....Hope this helps
Old 07-24-2006, 11:54 AM
  #6  
TECH Fanatic
Thread Starter
iTrader: (1)
 
TigerFan187's Avatar
 
Join Date: May 2004
Location: Louisiana
Posts: 1,586
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by EvilTwin
Tensioner needs replacement.. A guy with A cam swap came to my shop with that problem and that was how we solved it....Hope this helps

Ive tightned and re-checked numerous times. My buddy who is a GM tech mentioned that its a common problem with the Vettes and that alot of them replace the tensioner with an adjustable one. Im gonna do some research on if it will work. If it will work Ill try it out rather than putting a stock one on. Thanks for the help!
Old 07-24-2006, 04:01 PM
  #7  
TECH Addict
 
Yelo's Avatar
 
Join Date: Feb 2003
Location: Geneseo, NY
Posts: 2,864
Likes: 0
Received 1 Like on 1 Post
Default

You could always pull a stock tensioner apart and crank the spring down a little (it's a pain to do but it's free)
Old 07-24-2006, 04:27 PM
  #8  
TECH Fanatic
iTrader: (2)
 
Nick™'s Avatar
 
Join Date: Mar 2005
Location: Red Stick, La
Posts: 1,966
Likes: 0
Received 0 Likes on 0 Posts
Default

crank pulley might be walking, if you are in the BR area PM me and I have something to compare it against + HP Tuners for 03 trucks
Old 07-24-2006, 04:30 PM
  #9  
TECH Fanatic
iTrader: (4)
 
01Blackerado's Avatar
 
Join Date: Mar 2004
Location: Fairfax, VA
Posts: 1,597
Likes: 0
Received 0 Likes on 0 Posts
Default

Its also easier to try buying a shorter A/C belt!!! Just a though but it might tighten down the tensioner more.
Old 07-24-2006, 04:44 PM
  #10  
TECH Fanatic
iTrader: (13)
 
gao8302's Avatar
 
Join Date: Feb 2006
Location: Kenosha WI
Posts: 1,102
Likes: 0
Received 0 Likes on 0 Posts
Default

I had the same problem with my ac belt. I just got a new belt like someone said before. That fixed it. Belt are cheap and easy to fix so i would try that first. It worked for me and only cost $5 and 10 mins to fix.


Quick Reply: Need Advice On Belt Throwing Problem!!!



All times are GMT -5. The time now is 09:36 AM.