Dump some dry ice and water down in it. Run and hide, wait for big BOOM. No more dents.

12 hours ago, siteunseen said:

Dump some dry ice and water down in it. Run and hide, wait for big BOOM. No more dents.

That's funny! If I thought I could get predictable results I would try it.

Hmm...I disagree. I believe the results would be completely predictable.

With suitable plugs on the ports, I don't think there would be any question about what would happen! Completely predictable! 

So earlier there was a question about the crenelated rubber washers for the moustache bar. Anyone have any input into this?

Anybody have an idea where the solid ones came from? Some different application?

On ‎2‎/‎4‎/‎2018 at 8:17 PM, Patcon said:

Also I two different styles of mustache bar washers. Which is correct for a 240z? The upper ones with the crenelated rubbers on the bolts are the ones I suspect are correct. If so what are the other ones for?

The 1969 - 1972 TSB book shows crennulations in a drawing for a March 25, 1971 TSB, "Dampener Installation".  Carpartsmanual shows a few changes.  Assuming that #30 and #31 is the part.  The drawing looks screwed up, but the change dates match for the pair, and the label of "stopper" seems right.

http://www.carpartsmanual.com/datsun/Z-1969-1978/axle/rear-suspension

Also, I'm pretty pretty pretty sure that I've seen the flat ones on a very early 240Z or two.  In the wrecking yards and maybe illustrated somewhere.

We both misspelled crenulation.  Not sure it's quite the right word anyway. Not irregular.

https://www.merriam-webster.com/dictionary/crenulated

 How about castellated. Similar to wheel bearing nuts.

'wavy'

'rippled'

'serrated'

3 hours ago, Captain Obvious said:

So earlier there was a question about the crenelated rubber washers for the moustache bar. Anyone have any input into this?

When I dismantled my 04/70 240z it had the crenulated rubber washers on it but I don't know if I was the first guy to remove the mustache bar.

51 minutes ago, grannyknot said:

When I dismantled my 04/70 240z it had the crenulated rubber washers on it but I don't know if I was the first guy to remove the mustache bar.

Crenelated as in the style on the studs or the style on the string?

2 hours ago, Mark Maras said:

 How about castellated. Similar to wheel bearing nuts.

Wick Humble calls them castellated.  The Google shows shapes that fit.  Works.

Doesn't the parts CD show something?  Fiche.