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Timing Chain Repair

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Old Oct 13, 2014 | 08:48 PM
  #21  
fastsuv's Avatar
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From: lockport,ny
I finally got around to starting the job.

I made an engine support that looks like the one in the service manual.

Took off the cam cover, belt, tensioner, engine mount, and front cover.

The non-adjustable chain guide was in 3 pieces.

Now comes the bonus hard part. The upper bolt for the non-adjustable chain guide was snapped off flush with the hole. The one that you can only access by removing the access plug in the head. So now I have to drill and easy-out the broken part without actually being able to see it directly. The only way to look directly at it would be to pull the head or the engine.

Luckily there is enough room to get an angle-head drill between the inner fender and the hole. Tomorrow I'll probably tackle it.

Steve
Old Oct 14, 2014 | 06:25 AM
  #22  
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From: Fredericksburg,VA
Glad it's you, not me. Good luck.
Old Oct 14, 2014 | 07:57 AM
  #23  
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From: lockport,ny
I have a question: Where did you guys buy the bolts for the crank pulley and the cam gears? These can't be reused and I haven't found them at the web sites for the auto parts stores. Are these dealer parts only, or do they actually have them at the parts stores?

Thanks
Steve
Old Oct 14, 2014 | 08:10 AM
  #24  
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From: Fredericksburg,VA
Dealer. They aren't stretch bolts, so ........
I will try to check with a mechanic later today, but I don't think they really use new bolts. I think that's a CYA instruction.

I am not an authority, though.
Old Oct 14, 2014 | 10:49 AM
  #25  
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I asked a couple of guys. They said use new ones from the dealer.
Old Oct 14, 2014 | 11:17 AM
  #26  
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From: lockport,ny
Thanks, Don

Steve
Old Oct 16, 2014 | 11:33 AM
  #27  
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From: lockport,ny
Well, the broken screw doesn't want to come out. I drilled it (not exactly centered but not wildly off) and tried an easy-out but it just breaks loose from the screw or pieces of the screw break off. I also noticed that the original broken off screw head part had wobbled around the hole and did some damage to the aluminum (gouging, etc.).

I could drill out the hole larger and use an insert, but I don't know how much material there is around the original hole (I don't want to break through the aluminum or weaken it).

The next step might be to remove the head and take it to a speed shop so they can bore it out with their horizontal drill through the access plug and put an insert in. I'll call them first to get their opinion before I take anything off.

Steve
Old Oct 16, 2014 | 07:29 PM
  #28  
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From: na
Originally Posted by fastsuv
Well, the broken screw doesn't want to come out. I drilled it (not exactly centered but not wildly off) and tried an easy-out but it just breaks loose from the screw or pieces of the screw break off. I also noticed that the original broken off screw head part had wobbled around the hole and did some damage to the aluminum (gouging, etc.).

I could drill out the hole larger and use an insert, but I don't know how much material there is around the original hole (I don't want to break through the aluminum or weaken it).

The next step might be to remove the head and take it to a speed shop so they can bore it out with their horizontal drill through the access plug and put an insert in. I'll call them first to get their opinion before I take anything off.

Steve
That's probably why the chain guide broke into 3 pieces. Bummer. Can you try heating it up a bit then easy out? Sometimes heat works wonders on stuck parts.
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