280ZX (S130) Forums Dedicated to 79-83 ZCars

Timing chain Issue sucks.

Old Jan 18, 2013 | 07:33 PM
  #1  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
Timing chain Issue sucks.

Well head gasket sealed. Car runs. Oil is actually losing the milkshake froth of antifreeze.

Then I pulled in the Garage perfect quiet idle then FRAP FAP FRAP FRAP. Great felt like a lower main. Nope timing chain is scary loose.

Tensioner side is tight. The slack side has a inch of slack! Did notice the car felt like it had a dead cylinder. Took it as a bad plug/wire. Nope

Tensioner I visually checked its still in her home. I used the exact same link on the sprocket! Why the hell all of a sudden I have all this slop?

could this affect the timing, causing the rough running?

Did see posts about the guide adjustments Tried and can get a ratchet down to the bolts nor a wrench.
Old Jan 18, 2013 | 09:09 PM
  #2  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
I'm a bit confused...

Originally Posted by Lesnocker
Tensioner side is tight. The slack side has a inch of slack!
The tensioner side IS the slack side (right side of engine / spark plug side).

Originally Posted by Lesnocker
Tensioner I visually checked its still in her home.
You must have x-ray vision, or did you yank the timing cover? Because there's no way to see the tensioner from just peaking down at the top of the head...

Sounds like the tensioner popped out... (chain wasn't secured tight enough when the head was removed).
Old Jan 19, 2013 | 05:09 AM
  #3  
zedsdeadbaby's Avatar
Registered User
 
Joined: Nov 2012
Posts: 64
Yeah... if the tensioner side is tight and the tight side is loose, you jumped time.
Old Jan 19, 2013 | 06:42 AM
  #4  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
Sorry for the confusion.

I own a nifty scope light I wiggled down the front cover with the valve cover off. "used in home inspection".

Tight side is tight like it should be. The slop is on the drivers side of the car. When I installed the cam gear all was perfect.

Turned the car over with the starter before installing the valve cover. All was well then. It did backfire through the intake a few times. Getting back to it Sunday. Worse case I have to pull the case and buy a timing chain set.

looks as if I can leave the head and manifolds alone just gotta pull the Harmonic balancer oil pump/ distributor and water pump. May as well replace all that as well.
Old Jan 19, 2013 | 06:51 AM
  #5  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
[QUOTE=Lesnocker;320503]

Tight side is tight like it should be. The slop is on the drivers side of the car.

I'm an idiot. All due apologies . The tensioner is in however extreamly loose did notice it took no effort to push it back with the wedge. Dammit pulling the case!
Old Jan 20, 2013 | 06:42 PM
  #6  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
Well took a look today. Soon as I turned the cam counter-clockwise all slack was taken up and was dead on with TDC the cam notch was a tiny bit to the right. Could a Bad misfire be causing things to jump around? I went to #2 position on the cam gear and was way to the left Or 11 o'clock on the cam gear notch. Im slowly losing my temper. Going to buy new plugs wires and try again.

Or could all this be because The coil condenser is muffed up?
Old Jan 20, 2013 | 06:45 PM
  #7  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
Also under load the car blows a fireball out of my Amf and sounds like a 20 gauge shotgun so if the timing is a mile off could it be trying to fire before TDC causing the crank to jump making the chain smack the housing?
Old Jan 20, 2013 | 06:46 PM
  #8  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
When properly installed, the chain should have NO slack. If there is slack, something is wrong w/ the guides or tensioner, or the chain was not lined up correctly:

Name:  chain1.jpg
Views: 2093
Size:  170.3 KB
Old Feb 12, 2013 | 02:46 PM
  #9  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
Front case question

Been cold and wet so Ive put off digging in to the case. Random question Does the head have to be removed to get the case off. Not sure if there is clearance or if its wedged between the oil pan and head. I'm ordering the kit here in a few days. If I cant get this fixed just as well pull the turbo motor from the 79 rat rod and junk it and this motor.
Old Feb 12, 2013 | 05:30 PM
  #10  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
If by case you mean "timing cover", you have to drop / loosen the oil pan...

https://www.zdriver.com/forums/280zx...ghtmare-37001/

Originally Posted by NismoPick
Anyway, yes, you will need to remove the dizzy & drop the oil pump. You will also need to loosen the oil pan as it's a VERY tight squeeze trying to get the cover back on with the head already in place. If you don't loosen the oil pan, the oil pan gasket will just push back as you push the cover in place. I've been there, done that.

Check out the FSM... it's got plenty of details on this.
Old Mar 22, 2013 | 10:47 AM
  #11  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
One last discussion before buying parts.

Haveing that same issue as before.

Car runs great when cold. Ran it around for a good hour. Then a heavy miss upon load. Such as a hill the car started chugging and back fireing. Then again clank clank clank clank clank right behind the water pump. @ 500 rpm idle. See I thought a timing chain issue would act a lot worse and would act like that 100% of the time. So I bought the timing set. My oil press is a tiny bit down due to the water in oil issue. I saw a high volume pump for 81.00.

Can I just loosen the pan enough to get the cover off and simply tighten back up with my friend mr. RTV sealant. Or am I screwed into removing the entire pan?
Old Mar 22, 2013 | 12:49 PM
  #12  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
Merged all your threads.

I answered your timing cover / oil pan gasket question a month ago.
Old Mar 22, 2013 | 01:02 PM
  #13  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
Sorry man, Just started this crap again. Soon as the oil gets hot then the noise comes in and it sounds like its fireing 3x's per cylinder. Front main is included in the kit. Do I have to replace the wood drift key in the crank or anything stupid?

hate to have a missing part when I go to assemble. Should take 8-10 hrs? Im thinking lol
Old Mar 22, 2013 | 04:22 PM
  #14  
Lesnocker's Avatar
Thread Starter
Registered User
 
Joined: Sep 2009
Posts: 520
From: Monongahela Pennslyvainia
what are the odds I clogged the oil port to the tensioner, when I cleaned the deck for the new head gasket? since the issues come and go??
Old Mar 24, 2013 | 09:07 PM
  #15  
Genewiz's Avatar
Registered User
 
Joined: Jan 2013
Posts: 27
From: Blacksburg, VA
I dont know how "easy" it is for you to push the tensioner back, but if it is not taking the slack out then it needs to be replaced.

Parts besides the timing kit (chain, cam gear, crank gear):

Tensioner set

gasket set: will need timing cover, oil pump, water pump, dizzy

Now is the time to change the water pump and any belts

If you bolts look old an rusty (especially around the waterpump) then you should get repacements.

Oil pan will need to be loosen to drop it away from the timing cover. If you do not drop it then when you go to put the cover on it will catch on the oil pan gasket and it up
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gergstuff
240Z, 260Z, 280Z Performance / Technical
4
Apr 1, 2015 08:31 AM
Switchtr3
280ZX (S130) Forums
1
Sep 16, 2011 09:01 PM
Bleach
280ZX Performance / Technical
5
Oct 14, 2005 06:38 PM
280zExTURBO
280ZX Performance / Technical
51
Oct 12, 2005 03:19 AM
mck2
240Z, 260Z, 280Z (S30) Forums
1
Sep 5, 2002 07:29 PM


Thread Tools
Search this Thread

All times are GMT -7. The time now is 02:20 AM.