General Rotary Tech Support Use this forum for tech questions not specific to a certain model year

HELP! Apex seals or?

Thread Tools
 
Search this Thread
 
Old 05-09-08, 11:37 AM
  #1  
Daily Beaten

Thread Starter
iTrader: (3)
 
TheRX7Project's Avatar
 
Join Date: May 2008
Location: Milwaukee
Posts: 592
Received 3 Likes on 3 Posts
Exclamation HELP! Apex seals or?

OK I got the 12a home and decided to crank it over and check the apex seals by listening for the "pss" sounds with the leading plug out.

My front rotor is fine but the back rotor has the typical "pss......pss.....pss" of a blown apex seal.

This car sat for a while, is it possible it could be another problem? Is there anything I should try before yanking the motor?
Old 05-09-08, 11:41 AM
  #2  
Rotary Enthusiast

iTrader: (14)
 
Rocking Rotary's Avatar
 
Join Date: Aug 2002
Location: St. Paul, MN
Posts: 1,482
Likes: 0
Received 3 Likes on 2 Posts
Do a real compression check and find out. That or look pull the exhaust manifold off and take a look to see if they are all still there.
Old 05-09-08, 11:49 AM
  #3  
Daily Beaten

Thread Starter
iTrader: (3)
 
TheRX7Project's Avatar
 
Join Date: May 2008
Location: Milwaukee
Posts: 592
Received 3 Likes on 3 Posts
I'll try pulling the manifold later today. I'm also going to try putting some oil into the peanut and see if it frees anything up.
Old 05-09-08, 12:36 PM
  #4  
Rotary Enthusiast

iTrader: (14)
 
Rocking Rotary's Avatar
 
Join Date: Aug 2002
Location: St. Paul, MN
Posts: 1,482
Likes: 0
Received 3 Likes on 2 Posts
Use ATF. It cleans will it makes compression.
Old 05-09-08, 12:45 PM
  #5  
Manual Rack

iTrader: (50)
 
FelixIsGod29X's Avatar
 
Join Date: Aug 2005
Location: Wanaque NJ
Posts: 3,652
Likes: 0
Received 1 Like on 1 Post
Ive heard to use MMO and not ATF. Just my .02
Old 05-09-08, 03:19 PM
  #6  
Daily Beaten

Thread Starter
iTrader: (3)
 
TheRX7Project's Avatar
 
Join Date: May 2008
Location: Milwaukee
Posts: 592
Received 3 Likes on 3 Posts
Mmo?
Old 05-09-08, 03:34 PM
  #7  
Shooting for 500

iTrader: (3)
 
coxxoc's Avatar
 
Join Date: Jan 2006
Location: Redmond, WA
Posts: 817
Received 31 Likes on 19 Posts
Use a compression tester. If you get two low bounces you have a blown apex seal. If they are all low, you have more than one blown. Taking the manifold off takes 3x as long.

Josh
Old 05-09-08, 09:32 PM
  #8  
Daily Beaten

Thread Starter
iTrader: (3)
 
TheRX7Project's Avatar
 
Join Date: May 2008
Location: Milwaukee
Posts: 592
Received 3 Likes on 3 Posts
OK I did a compression test, and the front rotor is extremely weak and the rear one has a blown seal. Motor swap/rebuild time.

What is the MINIMUM required to replace apex seals? I'm really stuck by time constraints here, I'm losing my garage space as of 5/20, so it needs to be running or go into storage.
Old 05-09-08, 10:56 PM
  #9  
Mazda Tech
iTrader: (4)
 
MazdaMike02's Avatar
 
Join Date: Nov 2007
Location: Tottenham, ON
Posts: 1,589
Likes: 0
Received 1 Like on 1 Post
All apex seals..don't half *** apex seals.
Old 05-10-08, 08:13 AM
  #10  
Daily Beaten

Thread Starter
iTrader: (3)
 
TheRX7Project's Avatar
 
Join Date: May 2008
Location: Milwaukee
Posts: 592
Received 3 Likes on 3 Posts
I'm buying another motor. I wouldn't just replace some apex seals that would be like re-ringing only a few pistons. I meant as far as gaskets and whatnot is concerned. But this motor is getting yanked and rebuilt... ported and boosted.... YUM.
Old 05-25-08, 11:53 AM
  #11  
7less for now!

 
yetterben's Avatar
 
Join Date: Oct 2007
Location: eau claire
Posts: 1,372
Likes: 0
Received 0 Likes on 0 Posts
dude i am sorry about the car and ebay thing. *sigh*
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Snook
Single Turbo RX-7's
18
10-08-15 10:09 PM



Quick Reply: HELP! Apex seals or?



All times are GMT -5. The time now is 07:10 PM.