Hello all,
It’s been a while since I last posted an update.
Aside from a steady stream of parts coming in (yes, there’s more on the shopping list!), there has been progress on the car itself.
If you go back several pages on this thread, you’ll see that we had previously finished the undercarriage in satin black. The thing is, when these cars left the factory, the undercarriage was painted what I can best describe as a sort of grey-beige. Mercedes calls it “STEINGRAU HELL” or Stone Gray Light, paint code DB 169. To make matters more difficult, the lower part of the monocoque frame upto the front cross tube remained this color while the visible upper part, was painted the colour of the engine bay and the rest of the car. Similarly, the outer, visible part of the spare wheel wells were body colour, the inner surface was Stone Gray. What exactly was MB’s reasoning for doing this in the 50’s and not painting everything in the body colour is not clear (even MB doesn’t have a plausible answer), but they followed a similar pattern till the 70’s. I decided to be at my finicky best and follow suit - we dropped the front sub-frame with the front suspension assembly, engine and transmission. The rear axle was left on. When prepping the surface for the new colour, a few areas showed corrosion so we stripped the surface to bare metal, replaced steel where required and then came up with a close match to DB169 in epoxy.
Rotten patches
Cut
Copy
And paste!
"STEINGRAU HELL - ya"
We then started work on the brake lines which had completely disintegrated. Detailed photos/measurements from the Ponton group guided us and we now have the brake lines sorted. MB painted the brake lines “Olive Green” (I forget the code) so olive green it was for the brake lines.
Plated tabs and ATE flex hoses to go with the new brake lines in "Olive Green"
Completing the engine area has been on the cards for a while and it was high time to settle on a colour for the car; I wanted a medium to dark blue but wasn’t quite sure what would look nice. We went through several Mercedes blues (pun not intended) and settled on DB900 “Surfblau” (Surf Blue) and painted the engine bay – it looked nice but not quite what I had in mind. In the meantime, I realised that the bulkhead panel in the engine bay was fabricated in the previous workshop and looked nothing like it should. So we decided to fix this. I then got this nagging feeling that the inner partition may need some attention, so the panel was cut open revealing a house of horrors!
Previously made bulkhead panel needed to go - hmm, I wonder what's underneath?
Let's find out!
Aaagghhhh!
After replacing large segments of steel and coating the insides to prevent rusting, the area was to be closed. Hang on. Originally, the flat surface would have had indentations so after an exchange of some mails to obtain measurements, the said indentations were made and then we closed the area.
All this meant that the surface had to be re-prepped for paint. It was now a toss up between 3 blues, DB 350 “Mittelblau” (Medium blue), DB 904 “Mitternachtblau” (Midnight blue) and DB 332 “Dunkelblau” (Dark Blue). Getting the mixing ratios for these shades would have been a cinch had Standox or Glasurit been available in Calcutta but neither is. The workshop has had good results using paint products from PPG so after obtaining the corresponding mixing ratios for PPG from cross-ref paint sites on then net, we made small samples. Dark blue was verrry dark. Medium blue appeared too dull. This left us with midnight blue. Dad immediately liked the shade. I wasn’t as sure and Mr. Sircar, the restorer, thought it was bordering on black. So we had sittings at the paint shop for a few hours over a few days and progressively reduced the black component in the midnight blue. Finally, we agreed on a shade and painted the engine bay but to my shock, it took upon a violet hue and looked horrid!
Before
And after
But why the violet hue?

This gave me plenty of time to think and midnight blue started to look rather appealing - back to the paint shop (I juts get this feeling that I’m not welcome there anymore) to get another sample of midnight blue which was then sprayed on a small area of the engine bay. Bingo - just what I wanted! So midnight blue it is and no going back on that.
The shade on the lower right section is Midnight Blue as opposed to the rest which is...umm, I'm not quite sure!

We also started the process of detailing the engine and tranny case. The cast aluminum parts such as the tappet cover, bell housing, tranny cover and oil sump, when buffed, became far shinier than we expected – not good at all. I was told that it would oxidize and lose some shine in a few days but even then, I’m not happy. So we’ve put this on hold until we figure out on how to obtain a clean, flat/mattish aluminum look.
A bit too shiny for me - STOP!
It’s tedious but I’m glad we got a chance to take a step or two back on several instances before starting out again because the results have been more to my satisfaction than the first time around. Equally satisfying is the fact that the restorer gets me with regard to what I want for the car and we've been working in close collaboration on the car.
Please feel free to make suggestions, I look forward to them!
Cheers,
mbz180