Weber 40 IDS question

[72targa]

I seem to recall reading that the plastic ones could catch fire, leading to a transition to metal...

[NZVW]

THREAD HIJACKER, Slightly off topic.
I have a really nice pair of 40's that were totally worked over by Paul Abbott. I am in the process of soda blasting the bodies and will then keep them as eye candy until I find a use for them.
What I am after is a set of velocity stacks that are of the yellowish (fibreglass) look that was used on the 917 engines.
These are purely for display purposes as the carbs will go into a perspex display box rather than being hidden all alone on a dark garage shelf.
Any help would be much appreciated
Mark

[Jon B]

SUBJECT: Modifications in WEBER Carburetors; Improved Power Transition Characteristics

Vehicle Type: 911, 911T, 911L, 911S

Beginning with engines numbered
3080373 (Type 2000), and/or 3180077 (Type 2000 w/Sportomatic) and
4080520 (Type 2000S) and/or 4180072 (Type 200S w/Sportomatic)

Bottom paragraph, page 1:
In addition, all carburetors now have modified throttle shaft couplings and air horns made of plastic. Metal and plastic horns may be paired without problems.

Page 4 of this bulletin is dated 8 February 1968



Jon B.
Vista, CA

[NZVW]

Now thats cool, anyone got 1/2 doz NOS plastic's ??
lol
Mark

[Jon B]

I hope that Claudius wasn't in a hurry for an answer ;-)

Jon B.
Vista, CA

[1QuickS]

Plastic horns appeared in 1968. They were continued through 1973 on Zeniths for the 911T (1973 for non-USA market) and were typically grey/green although some black ones were also used. 1966 through 1967 cars had nickle plated, one piece, spun steel horns, 50mm tall. Steel horns were also used for 914/6 but were of thinner material, especially the base flange thickness.

Difficult to be exact regarding horn usage after 1967 since they were varied, I only relate what I think I know.