WTB: Weber IDA carbs

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10-04-2022, 11:54 AM
Jesse-911E 1969

3 Attachment(s)

WTB: Weber IDA carbs

Hi all,

Looking for a set of the Weber IDA carbs:

40IDA 3C
40IDA 3C1

Prefer the early ones with the S stamped in the front (correct for the first ~500 901/02 S engines)

Thanks Paul for your help and pictures:

Attachment 581777

Attachment 581775

Attachment 581776
10-04-2022, 12:45 PM
NZVW

2 Attachment(s)

Hi Jesse,
I have a set
40IDA3C #4561
40IDA3C1 #4542

Attachment 581778

They have later production numbers than those posted by yourself and are complete with Top Hats, K&N air filters, Throttle linkage bar and new PMO manifolds,

I would have to check if the have the "S" stamping

Attachment 581779

Regards
10-04-2022, 09:26 PM
Jesse-911E 1969

Quote:

Originally Posted by NZVW

Hi Jesse,
I have a set
40IDA3C #4561
40IDA3C1 #4542

Attachment 581778

They have later production numbers than those posted by yourself and are complete with Top Hats, K&N air filters, Throttle linkage bar and new PMO manifolds,

I would have to check if the have the "S" stamping

Attachment 581779

Regards

Thanks Mark, will send you a PM!
03-03-2023, 06:32 AM
Jesse-911E 1969

Back to the top, still looking!
03-07-2023, 05:41 PM
G50911

i have some italian 40IDA 3C’s i’m going to post for sale. i’ll check to see if it has the “S” stamping in the morning.
03-07-2023, 06:24 PM
rgupta250

Quote:

Originally Posted by Jesse-911E 1969

Back to the top, still looking!

Jesse, what does the ‘S’ stamping signify?
03-07-2023, 06:30 PM
Key911

Not all '67S Type 901/02 engines had 40IDS carbs. The early ones had 40IDAs (until engine #960502).
03-07-2023, 10:40 PM
Jesse-911E 1969

Quote:

Originally Posted by Key911

Not all '67S Type 901/02 engines had 40IDS carbs. The early ones had 40IDAs (until engine #960502).

Indeed, as to how I understood it, engine number 960001 till 960502 had adjusted IDA's (before the IDS carbs came). To mark the difference between normal IDA's and 'S' IDA's there was a small S stamped in the front of the IDA carb.
03-08-2023, 07:24 AM
rgupta250

Quote:

Originally Posted by Jesse-911E 1969

Indeed, as to how I understood it, engine number 960001 till 960502 had adjusted IDA's (before the IDS carbs came). To mark the difference between normal IDA's and 'S' IDA's there was a small S stamped in the front of the IDA carb.

Thank you Jesse and Key911 for clarifying the 'S' stamp. Would the Weber IDAs with the 'S' stamping have the high discharge nozzles/squirters installed?
03-09-2023, 03:01 AM
66S

That is the main difference between IDA and IDS, it helped reduce burned pistons.
03-09-2023, 05:44 AM
Jesse-911E 1969

1 Attachment(s)

Quote:

Originally Posted by 66S

That is the main difference between IDA and IDS, it helped reduce burned pistons.

So the eary S IDA carbs didn't have the squirters? And IDS has:

Attachment 592448
03-12-2023, 04:18 PM
Fubawu

1 Attachment(s)

I've got a set listed on pelicanparts $3k
I don't believe they are early.

Attachment 592687
03-12-2023, 11:56 PM
Jesse-911E 1969

Quote:

Originally Posted by Fubawu

I've got a set listed on pelicanparts $3k
I don't believe they are early.

Attachment 592687

Thanks! Can you upload a picture of the "Weber 40 IDA" stamp on both sides?
03-13-2023, 06:50 AM
Fubawu

2 Attachment(s)

Attachment 592698 Attachment 592699
03-14-2023, 05:22 AM
Jesse-911E 1969

Thanks! Numerical serial numbers were installed by Porsche, alpha-numeric numbers are "after market" carbs.

I am looking for Numerical serial numbers (as installed by Porsche).
08-10-2023, 02:04 AM
Jesse-911E 1969

1 Attachment(s)

Back to the top, anyone has a set?

Attachment 601152