Are the circular metal parts that hold the grommets transferable to new bolts or no?

[Turdle]

https://www.amazon.com/dp/B0C99CLTCZ?tag=seriouexplor-20

 

[Turdle]

Amazon.com

 

[San Hill]

So, is the idea here to drill like a pilot hole first using the reverse drill bit so that the pressure of the screw extractor is lessened?
Also, why is it called a reverse drill bit since most electric drills these days can go in both directions. Is it talking about the angle of the threads on the actual drill-bit being reversed?

 

[Turdle]

The bit itself cuts in reverse, normal bits cut clockwise, right.
Left hand, reverse twist cut rotating anti clockwise, reverse, or left.

The cut going left will snag, and rotate the remaining screw out since it is cutting left.

Using a normal bit rotating left will ruin the bit.

Google does still work ya know

 

[San Hill]

True, I did do a Google search. It said that a left-handed drill-bit is the same thing as a reverse-drill bit.

I also came across a video on YouTube showing that a left-handed drill-bit alone is sometimes sufficient to remove a broken bolt. So, that's very promising.

 

[San Hill]

Amazon.com

This looks like a great kit. I'm just concerned that their smallest extractor bit is not small enough. The kit that exclusively has the extractor drill-bits has smaller bit sizes but no left-hand drill-bits.

All extractor bits with smaller sizes.

None the less, I have started the return on the extractor set I bought and purchased the product in your most recent post above. I think it will work.

 

[Mbrooks420]

Here is the link to the exact bolt my drivers side valve cover uses in the hole that I broke:

This is my replacement for my broken bolt.

I'm not sure what else I can give you since it's kept a secret on the product page. It is simply described as 40mm, 41mm bolt. No other specs are present.

You’d have to match it up to a known bolt, nut, tap, or find a way to measure its OD.

 

[San Hill]

You’d have to match it up to a known bolt, nut, tap, or find a way to measure its OD.

Whooooooaaaa boy!!!! Well, it's easy enough to figure the outside diameter of these bolts. I can take it up to Home Depot and have them measure that for me with their little stationary measuring devices for bolts. I fear that I need that smallest left-handed drill-bit, the 4/32" for this job.

Have none of you veterans ever broken a valve cover bolt...where are all the trailblazers to guide me into nirvana?????

Here is a photo of one of the new bolts next to the #1 flute in my yet to be used brand new screw extractor set:

 

[Turdle]

Tape measure across bolt will be close enough.

Looks like 3/16" , if it is, use a sharp very thick nail for center punch, dead center, then one good whack with hammer to make a divot. then use a 1/8" reverse left twist drill bit with drill set for reverse. Usually the drill bit will pull the screw out with no damage to the hole.

 

[San Hill]

Tape measure across bolt will be close enough.

Looks like 3/16" , if it is, use a sharp very thick nail for center punch, dead center, then one good whack with hammer to make a divot. then use a 1/8" reverse left twist drill bit with drill set for reverse. Usually the drill bit will pull the screw out with no damage to the hole.

So, the #1 flute in the picture you recommend I skip and just going ahead with the left-handed drill bit then? Okay, I can give this a shot. The guy in the YouTube video got the job done with only a left-handed drill-bit. But I just ordered that kit off Amazon (the one you posted a link to above) and will be returning this kit in the picture. it says the kit will be here tomorrow but I probably won't be able to even try this until my next days off. Still making small progress just by keeping my mind on it. To live is to learn and that's what I am trying to do every day.

 

[Mbrooks420]

So, the #1 flute in the picture you recommend I skip and just going ahead with the left-handed drill bit then? Okay, I can give this a shot. The guy in the YouTube video got the job done with only a left-handed drill-bit. But I just ordered that kit off Amazon (the one you posted a link to above) and will be returning this kit in the picture. it says the kit will be here tomorrow but I probably won't be able to even try this until my next days off. Still making small progress just by keeping my mind on it. To live is to learn and that's what I am trying to do every day.

You’ll need a hole for the extractor anyways. Might as well try to work it out with the drill first.

Extractors always make me nervous, and I’d consider myself a vet.