Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

throwing belts over 4000 rpms

Thread Tools
 
Search this Thread
 
Old 10-13-2008, 09:09 AM
  #1  
TECH Apprentice
Thread Starter
iTrader: (3)
 
6point7s14's Avatar
 
Join Date: Oct 2008
Location: South MS
Posts: 319
Likes: 0
Received 0 Likes on 0 Posts
Default throwing belts over 4000 rpms

i have a 95 240sx with 408/t56 and i had to eliminate power steering to be able to take my car to cruising the coast this past weekend.... so i used a 52.5 inch belt and re routed it accordingly.... when i get over 4000 rpms it throws the belt every time..... also since i did the new belt the car trys to over heat sitting in the long periods of still traffic at cruising the coast.... could it be a tensioner problem or do i need to put a ribbed pulley where the smooth idler is? thanks in advance
Old 10-13-2008, 09:30 AM
  #2  
11 Second Club
iTrader: (27)
 
Z28/2002's Avatar
 
Join Date: May 2005
Location: Your girl's back door giving her the long stroke while you're at work
Posts: 6,801
Likes: 0
Received 3 Likes on 3 Posts

Default

Are you running a underdrive pulley and does the car still have AC?
Old 10-13-2008, 09:32 AM
  #3  
TECH Apprentice
Thread Starter
iTrader: (3)
 
6point7s14's Avatar
 
Join Date: Oct 2008
Location: South MS
Posts: 319
Likes: 0
Received 0 Likes on 0 Posts
Default

no underdrive pulley and ac won't be put on til next year
Old 10-13-2008, 10:00 AM
  #4  
11 Second Club
iTrader: (27)
 
Z28/2002's Avatar
 
Join Date: May 2005
Location: Your girl's back door giving her the long stroke while you're at work
Posts: 6,801
Likes: 0
Received 3 Likes on 3 Posts

Default

Just wondering cause I'm running a 51.5 on my car(only alternator,Katech tensioner,UD pulley and water pump) and haven't thrown a belt. She it taken to 7K often
Old 10-13-2008, 02:00 PM
  #5  
TECH Fanatic
 
nmass399's Avatar
 
Join Date: Sep 2007
Location: hattiesburg, Ms
Posts: 1,244
Received 7 Likes on 7 Posts

Default

i have been reading a lot about underdrive pulley's lately fixing that problem, they have the extra area on them to keep the belt on the pulley, they say the stock pulley is notorious for throwing the belt at high rmp's but my stock one has not thrown it yet and i take it to 6500 with everything on the front of the engine stock.
Old 10-13-2008, 03:32 PM
  #6  
TECH Apprentice
Thread Starter
iTrader: (3)
 
6point7s14's Avatar
 
Join Date: Oct 2008
Location: South MS
Posts: 319
Likes: 0
Received 0 Likes on 0 Posts
Default

thanks guys i will try the 51.5 belt and a new tensioner
Old 10-13-2008, 04:03 PM
  #7  
12 Second Club
iTrader: (13)
 
LS1Formulation's Avatar
 
Join Date: Apr 2006
Location: Grand Rapids, Michigan
Posts: 2,441
Received 442 Likes on 353 Posts

Default

Buy a Katech tensioner. I had a problem with my belt throwing off partway and getting cut by the P/S pulley so I got one and it cured the problem.
Old 10-13-2008, 04:25 PM
  #8  
TECH Apprentice
iTrader: (17)
 
archerandsons's Avatar
 
Join Date: Oct 2007
Posts: 345
Likes: 0
Received 0 Likes on 0 Posts

Default

thats never good, braken belt or just thrown it off?
Old 10-18-2008, 09:27 AM
  #9  
LS1TECH Sponsor
iTrader: (19)
 
Katech_Jason's Avatar
 
Join Date: Sep 2005
Posts: 2,939
Likes: 0
Received 4 Likes on 4 Posts

Default

Originally Posted by LS1Formulation
Buy a Katech tensioner. I had a problem with my belt throwing off partway and getting cut by the P/S pulley so I got one and it cured the problem.
Thanks. Yes, a Katech tensioner will solve the problem.




All times are GMT -5. The time now is 02:50 PM.