3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

question about the front eccentric shaft bolt

Thread Tools
 
Search this Thread
 
Old 11-05-08, 07:47 PM
  #1  
Senior Member

Thread Starter
iTrader: (1)
 
fdfreak's Avatar
 
Join Date: Mar 2005
Location: Fargo, doncha know
Posts: 503
Likes: 0
Received 0 Likes on 0 Posts
question about the front eccentric shaft bolt

I am in the process of tearing my engine block down but I have ran into a snag. I cant seem to remove the front bolt on the eccentric shaft (large bolt in the middle of the main pullies). I have my pnuematic gun at 150psi and it is still not coming off. its not a reverse thread by chance is it? I have an overhaul vid and on there its a normal thread for the FC but I am assuming is the same for the 3rd gen. anyother suggestions?
Old 11-05-08, 07:56 PM
  #2  
Slower Traffic Keep Right

iTrader: (5)
 
poss's Avatar
 
Join Date: Apr 2002
Location: Albuquerque, NM
Posts: 2,192
Received 2 Likes on 2 Posts
It's a right-hand thread. I had to take my engine to a diesel mechanic. It took a torch and a 1200 ft-lb pneumatic impact to get it off! Good luck.
Old 11-05-08, 08:16 PM
  #3  
All Spooled Up

iTrader: (7)
 
badddrx7's Avatar
 
Join Date: Nov 2001
Location: Ironton,ohio
Posts: 2,752
Likes: 0
Received 3 Likes on 3 Posts
Hell men this has been discussed about as many times as an Auto to Manual swap. Don't use a torch on your Eccentric Shaft....never ! Don't put a wrench on the bolt and "hit" the starter ( like some have done ). Don't try to lock the flywheel. All this puts ondue stress and strain on the E-shaft and more.

I have removed 4 or 5 of these and the FD is the hardest to remove. It's torqued on at 200 foot pounds with some locktite. So What! IT goes on, it'll come off. The key to removing this "Demon Bolt" is to capture and hold the E-shaft hub, to prevent it from turning. I have developed ( and some others may have too ) a tool to bolt on and hold the E-shaft hub firmly, to keep it from turning. Remove the bottom pulley ( 4 bolts ) and bolt this tool on. Once the hub is held firm then just take a 3/4" ratchet or breaker bar with the proper socket ( been awhile but I believe it is 21mm ) and add a cheater to it and the bolt will ease on out, without incident. My wife held the holding tool while I broke the bolt loose once.


Here is a picture of the Tool that I made to hold the E-shaft hub....
Attached Thumbnails question about the front eccentric shaft bolt-tool-e-bolt.jpg   question about the front eccentric shaft bolt-tool-ebolt2.jpg  

Last edited by badddrx7; 11-05-08 at 08:23 PM.
Old 11-05-08, 08:58 PM
  #4  
Senior Member
iTrader: (6)
 
David0ff's Avatar
 
Join Date: Jan 2008
Location: Montreal , Canada
Posts: 436
Likes: 0
Received 1 Like on 1 Post
the way i usually take it off :
with the engine out of the car on the ground , with engine mounts still on and flywheel attached ,
i chain 2 bolts ( one 2 flywheel and one to upper trany bolt mout in such a way that it stops the eshaft from rotating when i unbolt the front )
with a ~1.5 Meter pipe ... and my dad and a friend on top of the engine , it usualyl comes off
Old 11-05-08, 10:28 PM
  #5  
Sponsor
iTrader: (41)
 
IRPerformance's Avatar
 
Join Date: Apr 2003
Location: NJ
Posts: 11,347
Received 317 Likes on 190 Posts
If its an original motor, my 700 ft/lb IR Titanium gun won't even do it. I put the motor on a heavy duty engine stand. Use a rotary-specific flywheel stopper. Then I have an assistant stand on the engine stand to keep it stationary while I go at the bolt with a 1" drive breaker bar and a jack handle for an extension. This may not work for everyone, as I am 6"1" 238lbs and at the gym regularly. Another option is to put the car in gear and put the ebrake on, and break it loose while the motor is still in the car. I would worry about denting a fender though. I don't see anything wrong with using a torch. You should be replacing the o-ring on the bolt, the thermopellet with a solid plug, and the front main seal anyway during your rebuild. A lot of engine are assembled with lock-tite and you need to heat it to free it up.

Last edited by IRPerformance; 11-05-08 at 10:38 PM.
Old 11-06-08, 01:31 AM
  #6  
Stay tuned...

iTrader: (3)
 
AnthonyNYC's Avatar
 
Join Date: Jul 1997
Location: West Islip, Long Island NY
Posts: 2,917
Likes: 0
Received 1 Like on 1 Post
1. Heat it with a torch.
2. Try your impact gun again, if it does not come off now...
3. I will usually then lock the flywheel and then use a breaker bar with an impact socket.

Anthony
Old 11-06-08, 10:15 AM
  #7  
Rotary Enthusiast
Tenured Member 20 Years
 
impactwrench's Avatar
 
Join Date: Dec 2002
Location: Bonita Springs Fl
Posts: 1,224
Received 2 Likes on 1 Post
I built a similar tool to Bads that lags to studded garasge walls to hold shaft. I works well and you can remove the bolt by yourself.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
astrum
2nd Generation Specific (1986-1992)
24
11-15-17 08:44 AM
rx7jocke
Single Turbo RX-7's
1
08-15-15 03:36 PM



Quick Reply: question about the front eccentric shaft bolt



All times are GMT -5. The time now is 10:08 PM.