Timing Chain Inspection and Replacement

[Tynan918]

Is the fan, water pump, and harmonic balancer the only things I remove to get to the timing chain cover ?

 

[Tynan918]

Remove the remaining amount of the existing bolt; chase the existing threads w/a tap if they need it, & use another correct/new bolt.

No need to use a bigger bolt after I drill out the broken bolt ?

No need for a bigger bolt or helicoil ?

Just drill out, tap, and install the same size bolt ?

 

[bruisedbanana79]

No need to use a bigger bolt after I drill out the broken bolt ?

No need for a bigger bolt or helicoil ?

Just drill out, tap, and install the same size bolt ?

He’s saying if you can get the bolt out with an extractor you’ll need to chase the threads with the same size tap for any threads you may have damaged.

 

[Tynan918]

He’s saying if you can get the bolt out with an extractor you’ll need to chase the threads with the same size tap for any threads you may have damaged.

No he's saying drill out and destroy/eat away the broken bolt, tap/rethread, install the same size bolt... it's damaged past the point of extraction... Which is why he's suggesting destroying/eat away the broken bolt with a drill...

 

[bruisedbanana79]

If you can try and clean up the RTV around the opening of the hole. Then clean it with brake clean or carb cleaner and get a few good photos to share of the broken bolt. I think this will aid us in providing you the best guidance.

 

[Tynan918]

If you can try and clean up the RTV around the opening of the hole. Then clean it with brake clean or carb cleaner and get a few good photos to share of the broken bolt. I think this will aid us in providing you the best guidance.

Understood...

 

[scoti]

He’s saying if you can get the bolt out with an extractor you’ll need to chase the threads with the same size tap for any threads you may have damaged.

No he's saying drill out and destroy/eat away the broken bolt, tap/rethread, install the same size bolt... it's damaged past the point of extraction... Which is why he's suggesting destroying/eat away the broken bolt with a drill...

Incorrect. I'm saying what bruisedbanana79 said.

If you think you can drill out that bolt to be able to put a bigger bolt in..... Then that means you think you can drill out what's in there. Regardless of size, you're still drilling to remove material.
if you don't use the correct methods to remove the bolt, you will not have a hole suitable for a larger bolt.

If you can drill it out en-masse for a larger bolt, you should be able to drill out the current bolt. It takes the same effort & finesse either option.

 

[Tynan918]

Incorrect. I'm saying what bruisedbanana79 said.

If you think you can drill out that bolt to be able to put a bigger bolt in..... Then that means you think you can drill out what's in there. Regardless of size, you're still drilling to remove material.
if you don't use the correct methods to remove the bolt, you will not have a hole suitable for a larger bolt.

If you can drill it out en-masse for a larger bolt, you should be able to drill out the current bolt. It takes the same effort & finesse either option.

Gotcha, and understood.

I'm going to attempt to try it without fixing the broken bolt first, and if there is no leaks when I run it, then I will leave it be...if it leaks then I will remove the timing cover and work on fixing the broken bolt...

I don't mind the work, and for educational purposes, I want to see how things play out with the broken bolt unfixed and RTV sealing things up.

 

[mikester]

Incorrect. I'm saying what bruisedbanana79 said.

If you think you can drill out that bolt to be able to put a bigger bolt in..... Then that means you think you can drill out what's in there. Regardless of size, you're still drilling to remove material.
if you don't use the correct methods to remove the bolt, you will not have a hole suitable for a larger bolt.

If you can drill it out en-masse for a larger bolt, you should be able to drill out the current bolt. It takes the same effort & finesse either option.

I wouldnt go for a fractional size larger. If the hole is shot I would go up the next larger size in metric. This way it might not be a huge size difference. Just a thought.

 

[g0thiac]

You got a couple of options.

Add RTV to the area, then start it up, see if it leaks.

Or, extract the bolt as the other members say. If this was my only ride, I would try it anyway. If you got time, then do it all properly.

Worst come to worse, is you have to top off oil. Up to you.

 

[Tynan918]

Using a Permatex Gasket Maker Comparison Chart, it seems as if the ULTRA BLACK is a better fit for my job vs. THE RIGHT STUFF...