Notices
964 Forum 1989-1994
Sponsored by:
Sponsored by:

Timing Chain Box Removal

Thread Tools
 
Search this Thread
 
Old 11-21-2017 | 07:26 AM
  #1  
jamesjedi's Avatar
jamesjedi
Thread Starter
Rennlist Member
 
Joined: Jul 2007
Posts: 594
Likes: 4
Default Timing Chain Box Removal

Hi,

Hoping for some guidance. My heads are ready to come off, I just need more room to get past the timing chain box. I have loosened the bolts to the box, but I still need a little more room for the ends of the cam to clear it. Do I need to remove the box, if so what is the process. Thanks for any guidance.
Old 11-21-2017 | 08:34 AM
  #2  
Rocket Rob's Avatar
Rocket Rob
IHI KING!
Rennlist Member

 
Joined: Aug 2001
Posts: 13,395
Likes: 223
From: Nashua, New Hampshire, USA
Default

Yes, you need to remove the chain box to remove the heads. Once you have removed the bolts, it will come off. You may have to over come any gasket sealant. Just be careful prying. The chain boxes are magnesium and therefore soft metal.
Old 11-21-2017 | 01:41 PM
  #3  
jamesjedi's Avatar
jamesjedi
Thread Starter
Rennlist Member
 
Joined: Jul 2007
Posts: 594
Likes: 4
Default

Thanks for the reply. All the bolts are off, it is loose, but something is holding it back from coming off.

I have removed the chain tensioner. Do I need to do anything with with the ramps?
Old 11-21-2017 | 02:24 PM
  #4  
Rocket Rob's Avatar
Rocket Rob
IHI KING!
Rennlist Member

 
Joined: Aug 2001
Posts: 13,395
Likes: 223
From: Nashua, New Hampshire, USA
Default

You have to remove the ramps and tensioners too. Then loosen the cam sprocket. Once those are out of the way, the chain box should come off. Sorry its been a few years since I've rebuilt my engine.
Old 11-21-2017 | 06:52 PM
  #5  
jamesjedi's Avatar
jamesjedi
Thread Starter
Rennlist Member
 
Joined: Jul 2007
Posts: 594
Likes: 4
Default

Thanks. I have the cam sprocket off, I just need to remove the ramps.

I will have another look tonight. Thanks again.
Old 11-22-2017 | 03:48 PM
  #6  
cscrogham's Avatar
cscrogham
Rennlist Member
 
Joined: Jan 2010
Posts: 1,107
Likes: 167
From: Shenandoah Valley, Va
Default

If you remove the rocker gear and camshaft you can take the heads off and leave the cam boxes. Good idea to inspect the ramps anyway tho, they tend to wear grooves where the chain contacts.
Old 11-22-2017 | 05:52 PM
  #7  
jamesjedi's Avatar
jamesjedi
Thread Starter
Rennlist Member
 
Joined: Jul 2007
Posts: 594
Likes: 4
Default

Thanks for all the replies. I got the heads off once the ramps were removed. They use a 10mm 1/4 inch drive socket and an Allan key. Heads came off very easily after that.



Quick Reply: Timing Chain Box Removal



All times are GMT -3. The time now is 11:00 AM.