Strange 4cam stuff, any ideas?

Discussion of 4-Cam Type 547 engines (and all the Fuhrmann racing variants) and cars that powered them.
Post Reply
Message
Author
User avatar
Adam Wright
Classifieds Monitor
Posts: 10140
Joined: Wed Mar 12, 2008 1:00 am
Tag: KTF

Strange 4cam stuff, any ideas?

#1 Post by Adam Wright » Wed Feb 03, 2021 9:45 pm

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.
Attachments
4camsolex.jpg
4camsolex.jpg (144.96 KiB) Viewed 2426 times
IMG_3258.jpg
IMG_3258.jpg (130.05 KiB) Viewed 2426 times
IMG_3257.jpg
IMG_3257.jpg (130.26 KiB) Viewed 2426 times
IMG_3256.jpg
IMG_3256.jpg (119.66 KiB) Viewed 2426 times
I always need stories for my Barn Find column in the magazine, if you have a good story to share, please let me know.

User avatar
Jeff Adams
356 Fan
Posts: 128
Joined: Wed Jan 21, 2009 9:54 pm
Location: Connecticut
Contact:

Re: Strange 4cam stuff, any ideas?

#2 Post by Jeff Adams » Wed Feb 03, 2021 10:00 pm

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.

User avatar
Harlan Halsey
356 Fan
Posts: 1630
Joined: Fri Mar 02, 2012 2:05 pm
Location: No Cal SF Peninsula

Re: Strange 4cam stuff, any ideas?

#3 Post by Harlan Halsey » Thu Feb 04, 2021 6:10 am

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.

User avatar
John Hearn
356 Fan
Posts: 538
Joined: Thu Jul 31, 2008 9:26 am
Tag: Porsche is a two sylable word!
Location: Colchester, Great Britain

Re: Strange 4cam stuff, any ideas?

#4 Post by John Hearn » 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

User avatar
Joris Koning
356 Fan
Posts: 2443
Joined: Tue Mar 25, 2008 5:34 pm

Re: Strange 4cam stuff, any ideas?

#5 Post by Joris Koning » Fri Feb 05, 2021 9:23 am

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
Attachments
Engine.jpeg
Engine.jpeg (195.92 KiB) Viewed 2306 times
'56 Coupe
'57 Coupe
'59 Cab 
'60 Coupe

User avatar
Harlan Halsey
356 Fan
Posts: 1630
Joined: Fri Mar 02, 2012 2:05 pm
Location: No Cal SF Peninsula

Re: Strange 4cam stuff, any ideas?

#6 Post by Harlan Halsey » Sat Feb 06, 2021 6:15 am

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.)

User avatar
Joris Koning
356 Fan
Posts: 2443
Joined: Tue Mar 25, 2008 5:34 pm

Re: Strange 4cam stuff, any ideas?

#7 Post by Joris Koning » Sun Feb 07, 2021 4:42 am

Harlan,

The early cars had the generator ground on the shroud before they moved it to the gen stand.
'56 Coupe
'57 Coupe
'59 Cab 
'60 Coupe

User avatar
Joris Koning
356 Fan
Posts: 2443
Joined: Tue Mar 25, 2008 5:34 pm

Re: Strange 4cam stuff, any ideas?

#8 Post by Joris Koning » Sun Feb 07, 2021 5:22 am

Adam, question, are yours hammerite or silver? They look silver
'56 Coupe
'57 Coupe
'59 Cab 
'60 Coupe

User avatar
Harlan Halsey
356 Fan
Posts: 1630
Joined: Fri Mar 02, 2012 2:05 pm
Location: No Cal SF Peninsula

Re: Strange 4cam stuff, any ideas?

#9 Post by Harlan Halsey » Fri Feb 12, 2021 4:38 am

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 2150 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 2150 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?

Richard Emerson
356 Fan
Posts: 772
Joined: Wed Jan 29, 2014 1:43 am

Re: Strange 4cam stuff, any ideas?

#10 Post by Richard Emerson » Fri Feb 12, 2021 5:26 am

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 2146 times
Last edited by Richard Emerson on Fri Feb 12, 2021 12:16 pm, edited 1 time in total.

Richard Emerson
356 Fan
Posts: 772
Joined: Wed Jan 29, 2014 1:43 am

Re: Strange 4cam stuff, any ideas?

#11 Post by Richard Emerson » Fri Feb 12, 2021 5:36 am

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 2145 times

Post Reply