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Strange 4cam stuff, any ideas?

Posted: Wed Feb 03, 2021 9:45 pm
by Adam Wright
Got this stuff in a stash recently, guy had several Carreras over the years. I know one piece looks Carrera 2, any ideas on the other?

The aircleaners I think are for the early 4 hole solex.

Re: Strange 4cam stuff, any ideas?

Posted: Wed Feb 03, 2021 10:00 pm
by Jeff Adams
Correct on the air cleaners.

Engine compartment breather not just for Carrera 2, goes back to 1959.

The oval grey colored can is not factory, homemade for something.

Re: Strange 4cam stuff, any ideas?

Posted: Thu Feb 04, 2021 6:10 am
by Harlan Halsey
Yep, the rusty one is called the cows udder. It replaces the slant tube breather on 547s and early 692s. I run 547s in my '59 replacing the slant tube with a short section and running a hose up to the cows udder. One of the 3 tubes is the engine breather, it goes to the top. another is the road draft tube which also goes to the top. The third is a drain back to the oil tank. I wouldn't use that rusty cows udder until I had opened it up and thoroughly cleaned the inside. Might be easier to just make a new one.

The air cleaners are for the early short sand cast Solexs. According to Chuck Forge, these carbs had a huge flat spot around 3,000 RPM (which he had a fix for) When I get around to it, I'm going to run a pair of these on a pushrod engine, and see if I can duplicate his fix.

Re: Strange 4cam stuff, any ideas?

Posted: Fri Feb 05, 2021 5:19 am
by John Hearn
Carrera oil breathers are already made.
https://www.prs356.co.uk/porsche-356-pa ... -carrerra/
They also do an aluminium version for the same price.
Yet again PRS has those hard to find parts.......
KTF
John

Re: Strange 4cam stuff, any ideas?

Posted: Fri Feb 05, 2021 9:23 am
by Joris Koning
John Hearn wrote:
Fri Feb 05, 2021 5:19 am
Carrera oil breathers are already made.
https://www.prs356.co.uk/porsche-356-pa ... -carrerra/
They also do an aluminium version for the same price.
Yet again PRS has those hard to find parts.......
KTF
John
+1 and Mike is one of the nicest guys you can have the pleasure to meet

Mentioned air cleaners on my '57. I see there is set for sale in our classifieds for extortionate money

Re: Strange 4cam stuff, any ideas?

Posted: Sat Feb 06, 2021 6:15 am
by Harlan Halsey
Joris,
I have never seen that location for the generator ground before. On mine there's a bolt into the aluminum housing about where it is on the generator. Failing that, I think Porsche would have used one of the aluminum to housing screws rather than using the sheet metal for the ground.

I have some of those rock screeners too, but I intend to modify them to take either Piper X foam inserts, or K & N inserts if I get around to running them. (For track use, I run the velocity stacks, and I hate the thought of running those engines without velocity stacks.)

Re: Strange 4cam stuff, any ideas?

Posted: Sun Feb 07, 2021 4:42 am
by Joris Koning
Harlan,

The early cars had the generator ground on the shroud before they moved it to the gen stand.

Re: Strange 4cam stuff, any ideas?

Posted: Sun Feb 07, 2021 5:22 am
by Joris Koning
Adam, question, are yours hammerite or silver? They look silver

Re: Strange 4cam stuff, any ideas?

Posted: Fri Feb 12, 2021 4:38 am
by Harlan Halsey
Joris,
Apparently the relay ground was moved from the fan shroud location, to the edge of the support ring, to the middle of the ring. There is a picture of the ring edge location at the end of the "The Most Important Car in South America" thread. Here's a picture of the 692/2 location:

IMG_0636 692 Carrera Ground.jpg
IMG_0636 692 Carrera Ground.jpg (1.03 MiB) Viewed 2154 times

This 692/2 was a 12 V system: 100 mm generator, and 12 V starter with a 6 V pinnion gear.

IMG_0640 692 Carrera 12 V.jpg
IMG_0640 692 Carrera 12 V.jpg (1.37 MiB) Viewed 2154 times
It is easy to guess why the ground position changed: The early fan shroud location is the nearest flat surface. Later on they milled a flat on one of the ring locations. And finally they moved it to almost where it was on the pushrod cars. I'm curious to know where the ground is on the Spyders. Same places?

Re: Strange 4cam stuff, any ideas?

Posted: Fri Feb 12, 2021 5:26 am
by Richard Emerson
Early 1956 location. Wonder why they moved it to the shroud in 1957? Are you confident in that Joris?

3D4C7191-4362-462B-B0FD-02954C15FE25.png
3D4C7191-4362-462B-B0FD-02954C15FE25.png (2.68 MiB) Viewed 2150 times

Re: Strange 4cam stuff, any ideas?

Posted: Fri Feb 12, 2021 5:36 am
by Richard Emerson
And a 1959 692/2. With a different location than yours Harlan.

Could any of these locations be not original?

1C6496EB-BFCE-494A-AFBC-D7DF34C5F690.jpeg
1C6496EB-BFCE-494A-AFBC-D7DF34C5F690.jpeg (2.39 MiB) Viewed 2149 times