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Doug have you ver seen this tool for the webers ???

" THIS IS A SPECIAL TOOL (DRILL JIG) FOR IDA SERIES WEBER CARBURETORS FOUND AS ORIGINAL EQUIPMENT ON PORSCHE AND FERRARI CARS. (ALSO VOLKSWAGEN RACE VEHICLES). IT ALLOWS CORRECT PLACEMENT OF DRILL IN UPPER BODY OF CARBURETOR FOR VENTING THE FLOAT BOWL PROPERLY. IT ELIMINATES HOT START PROBLEMS BY VENTING THE HOT GASSES THAT BUILD UP AFTER SHUT OFF (HOT SOAK HIGH AMBIENT AND ENGINE TEMPERATURES) SO THAT FUEL IS NOT FORCED OUT OF THE MAIN NOZZLES (FLOODING). MADE OF HIGH QUALITY STEEL FORGING, MACHINED TO AIRCRAFT SPECS AND ALSO INCLUDES THE PROPER DRILL BIT. IT CAN BE USED ON HUNDREDS OF CARBS WITHOUT WEARING OUT."

Ron
No, I haven't seen it. Webers are kinda' learned by the emberical method.
It sounds like a logical tool and it might actually work.
The solution I found for the carbs "perculating" was to use the Gene Berg high pressure glass ball valves and the thick heat isolator gaskets.
I remember Inglese telling me how the carbsflooded out of the hood scoop on the Cobra on the fresh paint.
I remember how I discovered it on my car. I didn't realize that they were flooding and when I went to restart the car it turned into a geiser of raw fuel.
Running Webers builds character.

Is this for sale on Ebay?
The vent hole is in the top of the carb in between the jets.
Why would one need a jig?
I don't see how even enlarging the vent hole would reduce pressure. It raises the risk of getting debris in the bowl. There is just a screen for protection.
I really think that the perculation is just from the heat of the engine rising from the engine, not from pressure build up.
The manifold gets really hot and the carbs become heat risers.
Heat isolator gaskets are mandatory and all that are really needed.
The Gene Berg valves are just added insurance.
quote:
Originally posted by accobra:
So it states .......... THIS IS A SPECIAL TOOL (DRILL JIG) FOR IDA SERIES WEBER CARBURETORS FOUND AS ORIGINAL EQUIPMENT ON PORSCHE AND FERRARI CARS.

But I have to say the Porches and Ferraris are horizontal mounted IDA's ?????

So maybe it applys to them.

R


Horizontally mounted ida's don't exist. You are thinking of DCOE's.

68-9 911's use 46 or 48IDA-3's. These share partswith the 48IDA's but are three throat castings and have other differences as well. Some VW based 4cy Porsches use 46 or 481da.
I don't know what Ferrari's use 48IDA. I haven't seen any.
The 365 GTB Daytonnas don't. Those look like IDF"s. My Italian Weber authority says the IDa's are strictly Porsche.
(He also refuses even to acknowledge the existance of such cars such as the Ford GT40 and the Shelby Cobra). I have to let that go. His friendly information is worth more then me being correct.

If the IDA's are on the Ferrari's they are certainly just race cars, not street cars.

"I interpret the above ebay quote to saying that the tool is intended for use on Weber Ida carbs.
There are Weber IDA carbs used on some Porsches, Ferrari's, etc."

It in no way states that this is a Weber factory tool or that you need this tool to make you Weber IDA's just like the ones used on the Porsches, Ferrari's, etc.

I also think that the wording of the ad is carefully worded to make you think that it is a factory tool. In other words, it is intentionally misleading the buyer.

The other possabilaty is that it is a factory tool and that it really works.

Knowing Weber, the carbs are supplied to the manufacturers as necessary, i.e., there are no modifications required or recommended from the way that theysupply them. There is "tuning" involved yes, but not "modifications".

Unfortunately on this auction Ron you need to find a lawyer highly experienced in tuning Weber IDA's to understand what the seller is saying or implying. But for $26 who's getting hurt?
Just a minor correction. The Eearly 911 Porsches used 40-IDA 3C carbs. The 46 IDA-3C's were used on the Carrera -6 and some RSR engines. The 46IDA was way too big a carb for the 2.0 and 2.4 litre six cylinder motors.If my fading memory does not fail me....about the only common part between the 46-IDA and the 48-IDA are the fuel floats and needle and seats.As far as I know WEBER never made a 48IDA-3 series carb.
I have a set of te 46-IDA 3C's on my factory 916-6 ( an ex-IMSA racer running a twin plug RSR spec motor)...... a really quick car! ! Cool
Just got in the door and read this message. Give me an hour or so and I'll pull the top off of one of my 46-IDA3-C carbs and compare the profile for fittment. I'm guessing the "fixture" will rest in the carb top plate (inverted) and aligns with some casting cavity for the vent hole drilling if needed.
It has been a while since I have been into these carbs but I never experienced any high temp - vapor/pressure build up in the 46's. Possibly only a 48-IDA issue??? I'll take a look - see.
Ok I found everything at Inglese ... I was fooled and forgot the British pound takes 2 to equal one dollar and I rather buy American. So inglese worked out to be the same price and less shipping cost.

I dont like PORCHES either. But I have to say Pantera day at Pocono I got a ride in a 930 Turbo in race trim and I felt like I was in a real fast VW Bug. Like a tin can.

What are you using for linkage .. I had hardware to connect on on top of the throttle stop and one under by rotating the throttle stop 180 degrees. Not with a bell crank in the center. But used the bell crank on the side to connect the Pantera cable linkage.

Did you get all that >>>> LOL

Ron
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