the last but one dry sump is almost ready...

Update: As many have said, these are BCD Corona pumps and are common to Dinos, Carbed 308s and some Fiats. The originals seem to have had only one wire from the casing with the clamp serving as a ground to the frame/mount. Thanks to all for setting me straight! I am attempting to restore one...will post when done.

 

Posted my disassembly of my BCD Corona in the 206/246 side as they already had a thorough discussion on this pump going...

https://www.ferrarichat.com/forum/206-246/502462-corona-fuel-pump.html

 

No chance to give the valve covers back their original appearance?
Glass bead blasting? Walnut granulate blasting? Or something similar?

Best Regards
Martin

 

Not quite sure, where the problem is, but I would have taken the following into account for a decision:
For cosmetic reasons it's the best solution. But not sure, whether this the case technically. At the factory the bores for the camshaft seals, for example, have always been cut together with the mating cylinder head. Tolerances are small, seals are soft and sealant helps a lot too. So there will be probably no problem regarding leakage or so. But though little, you will always get some deviation regarding the two semicircles and on the cut front faces.
This is the reason, why covers are so hard to obtain. They probably never came as a separate spare part -though listed in the parts books- and those now being available come from damaged cylinder heads. At least this is, what my official Ferrari-workshop once told me.

The moral of the story is, that in such a case you have to decide between the best solution regarding looks and the best technical solution.
I myself would never sacrifice perfect mechanical things for a better look. But that's just me.

Best Regards
Martin

 

Martin, Alberto was talking only about the Valve covers , NOT the cylinderhads to be replaced.

 

Yes, but the camshaft seals are sitting in the cover as well. Their seat is formed by two semicircles. One in the head, one in the cover. And those were always machined while clamped together.

Best
Martin

 

Yes Alberto
you are right.
Seems, that we have different philosophies regarding technical things and looks.
This is like swapping mothers and children for a better looks.

Best
Martin

 

That's a very good news you will have the original finish.
If Toni Auto could do the same for all the car he's doing...because one of the detail you recognize an engine from him is that unoriginal paint.

 

Alberto,

who painted the engine once? And why?

Best
Martin

 

Then glass bead them to kill the shine and the timing covers too then clear coat them with a satin clear for engines so they dont oxidize but at least they'll look more correct.

 

And remain on the matching head with which they once have been machined, clamped together.
BTW. What comes to my mind regarding this discussion. Are there casting date stamps on the heads and inside the covers?

Best
Martin

 

Casting dates on the outside of the heads at the ends and inside the covers maybe. I cant recall seeing any inside but I also wasn't looking. I would want the original covers back on for the matched cam seal bores for sure.

 

Other than for that bores, I'm not quite sure. But I suspect further things, which have been machined together.
Front faces on the distributor end, distributor bores?

Regarding casting date. I found something. Seems to be present.

Best
Martin
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Yes all of those other surfaces would be machined as an assembly so if the option is there to use the mating parts then its a no-brainer.