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Old 04-20-2013, 05:18 AM   #1
Aysle
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1999 SL2
Default Timing Cover Bolts

Im in the process or trying to clean the grey RTVish stuff out of the threads... It just doesnt want to come out.

Ive tried razor blades...little screw drivers... and now on a dremel with a little wire wheel. Problem with that is its wearing down the threads a bit. Turning the nice black bolts shinny silver. Im assuming this is bad.

Right now I use a razor blade to get the big bits off. Then a tiny screw driver to dig in the threads then the dremmel to finish it off. How "clean" do the threads need to be? Do they have to be 100% clean? I also worry. If there is this much junk on the bolts how much is in the block. I got a .45 gauge nylon brush from the gun store but I dont think it will clean it all out if its this bad.

So I know the size / thread of the bolts M8x1.25 what strength should I be buying? My local ace has 8.8. Is that good enough?

Or am I ok polishing up the threads a bit?

...
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Old 04-20-2013, 06:58 AM   #2
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2001 SC2
Default Re: Timing Cover Bolts

You're just taking the paint off, no need to replace the bolts unless the thread has real physical damage.

If it really bothers you than 8.8 will be fine, they don't hold anything that's super stressed like suspension bolts do so there's no need for super strong expensive bolts.

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Old 04-20-2013, 08:05 AM   #3
Aysle
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1999 SL2
Default Re: Timing Cover Bolts

Also when I put the timing cover bolts back in do I put locktite or anti-seize on them? Or just straight in?

...
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Old 04-20-2013, 11:29 AM   #4
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2001 SC2
Default Re: Timing Cover Bolts

The best way to clean bolt threads out is with a wire wheel on a bench grider. You hold the head of the bolt with a pair of vice grips (not your fingers!!).

Make sure you have on eye & face protection, because the little bolts turn into bullets if they pop off your vice grips.

I have heard that you should use anti seize for any bolts that go into the aluminum block, but I have not done this to date. FWIW.

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Old 04-20-2013, 05:27 PM   #5
bumpdraft
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1998 SC2
1998 SW2
Default Re: Timing Cover Bolts

To clean enerything, I tapped all the holes and used a die on all the bolts. I put a little socket on a drill and ran the bolts thru a die. - Loading one side, then the next. Maybe overkill....until you get everything back together and then discover little drips of oil on a friend's fancy clean driveway.

Usually, I wire wheel everything. No gloves. It's fine wire and doesn't really hurt. Bigger the bolt the easier to keep your fingers away.

Gloves around equipment:
Skin will not pull your entire hand into a machine. Strong leather gloves will grab and wrap your arm around something scary It's the ol' long-haired hippy in the machine shop dilemma.

Hmmm....If it was some big knarly wire wheel on a pedestal, I'd probably use gloves and vicegrips.

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