300ZX (Z31) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

timing belt woes

Thread Tools
 
Search this Thread
 
Old 06-15-2006, 07:07 PM
  #1  
Registered User
Thread Starter
 
Turbo86's Avatar
 
Join Date: Apr 2006
Location: Frisco, TX
Posts: 161
timing belt woes

I'm sure you guys are sick of me and my timing belt, but i still need some help ...
ok here it goes
  1. I got the timing belt to go on and it's on the marks
  2. before I put new belt on ... the cams snapped a 1/4 turn each a couple times in both directions by accident from me trying to get cam sprockets off for oil seal change ... gave up too tight
  3. after every 1/4 snap I put back to mark
  4. I also moved the crank sprocket a smidge trying to get some slack for timing belt install and taking crank bolt out after trying to get timing marks aligned before TB removal
  5. in the middle of all this I did an oil change since I have limited time to work on car, i was trying to be productive (yes i'm an idiot ... no oil back to engine)
  6. at the moment the timing belt is on and it's on the marks ... the tensioner is really tight against belt, and the spring is barley touching the stud and is very loose, and the only tension is from the tightened down nut
  7. how can i get out of this, what are my options
  8. would it help if I open up valve covers to make sure valves are not hitting heads
  9. Am I screwed or Am I screwed?

Eric

Last edited by Turbo86; 06-15-2006 at 08:16 PM.
Turbo86 is offline  
Old 06-20-2006, 01:52 PM
  #2  
NisTuner
 
duowing's Avatar
 
Join Date: Sep 2005
Location: Cleveland, Ohio
Posts: 2,800
Did you ever get this car put back together? Basically if your camshafts move but are put back you'll be fine. There was a whole discussion that I read once on 300ZXClub.com that talked about doing the timing belt. It came to the conclusion that as long as everything is lined up with the markrs you should be fine.
duowing is offline  
Old 06-20-2006, 10:54 PM
  #3  
Registered User
 
craZed's Avatar
 
Join Date: Dec 2003
Location: riverveiw,fl
Posts: 102
Don't worry about the spring,most people just toss them anyways.
The nut holds it fine.
As for you encountering resistance,make sure the car is in neutral and then
try to turn the crank.
craZed is offline  
Old 06-21-2006, 07:43 AM
  #4  
Registered User
 
cheezmonta's Avatar
 
Join Date: Dec 2004
Location: Green Bay
Posts: 9
http://www.300zxclub.com/showthread.php?t=38079

A few good install pics.
The spring is more of a hazard to your motor than anything. Toss it like 99% of the people who have done thier own timing belt job. (myself included)
cheezmonta is offline  
Old 06-21-2006, 07:32 PM
  #5  
Registered User
Thread Starter
 
Turbo86's Avatar
 
Join Date: Apr 2006
Location: Frisco, TX
Posts: 161
thanks for responding guys, luckily this is not my daily driver or I would I've never done such a 1st time big job in the first place, I've learned so much, and I could probably do the job in a single day now that I know all the ins and outs ... why is the spring dangerous?, what is it's purpose?, why is it there?

Last edited by Turbo86; 06-21-2006 at 07:37 PM.
Turbo86 is offline  
Old 06-21-2006, 08:05 PM
  #6  
NisTuner
 
duowing's Avatar
 
Join Date: Sep 2005
Location: Cleveland, Ohio
Posts: 2,800
More than likely because the spring can come loose. Get caught in something behind that cover, and say it causes your belt to jump a tooth. That'll be no good. I've already seen this happen, and it bent up my alternator's metal fan blade. I got lucky. This was a socket too.
duowing is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ieatmustangs
300ZX (Z32) Performance / Technical
1
09-25-2012 04:19 PM
Turbo86
300ZX (Z31) Performance / Technical
3
06-28-2006 09:07 PM
Turbo86
300ZX (Z31) Performance / Technical
3
06-10-2006 07:12 AM
GWC300ZX
300ZX (Z32) Performance / Technical
1
04-27-2003 02:44 PM
pretender84
300ZX (Z31) Forums
2
07-27-2002 08:28 PM



Quick Reply: timing belt woes



All times are GMT -7. The time now is 05:16 PM.