OUR ONLINE CHECKOUT is CLOSED and we are NOT accepting any NEW orders at this time.

We are still fulfilling and shipping previously submitted and/or delayed order requests (as product availability allows) UNTIL NOVEMBER 15th 2022.

But after November 15th, all still pending backordered unshipped items will be automatically CANCELLED **(except for any special ordered drop-shipped or made/machined-to-order items).

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  VW Parts Catalog > Carbs & Fuel System >

Main Jets for Weber IDF & IDA, 73401 (Sold per EACH)
Weber IDF & IDA Main Jet
 
Aircooled.Net only carries ORIGINAL Weber JETS FROM ITALY, we do not carry Chinese reproductions which do not flow properly! These are all genuine Weber jets which have been flow tested at the factory. Our jetting guide down below will really help you dial in your carb!

Jets are sized in "milimeters", so a "50" jet is very close to .5mm. Actually they are rated on flow not size, after they are measured on a flow machine. That's why drilling and reaming jets is not necessarily a good idea, since drilling or reaming can result in a 55 idle flowing more than a 60 idle, based on orifice length and entry/exit radius, etc.

Price: $8.00
Item eligible for Econo/1st Class Mail shipment, min ship charge applies


: 73401

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Overview
 
Aircooled.Net only carries ORIGINAL Weber JETS FROM ITALY, we do not carry Chinese reproductions which do not flow properly! These are all genuine Weber jets which have been flow tested at the factory.
Item Features
We are aware that we are a little more expensive than other suppliers of Weber jets, but here is why you should use Aircooled.Net. First, we only sell genuine Weber jets from Italy! Secondly, we will tell you the correct jet sizes to minimize your jet expense, and your valuable time tuning! Other shops that aren't proficient at Weber Tuning will be happy to sell you jets at $4 ea, and you'll wind up with 6 sizes (24 jets) that you don't need! That makes no sense! By buying from us you will not spend more than you have to, our experience will keep your costs down, while providing the highest quality parts.

With that out of the way, we recommend the following main jet sizes for sea level driving for the Weber IDF & IDA

Venturi/Main

28/ 115, 30/120, 32/130, 34/140, 36/150, 38/155, 40/160, 42/170, 44/180

This will get you pretty close! Remember you can ALWAYS give us a shout for a more detailed and specific recommendation.

Also, NEVER EVER use F7 emulsion tubes on dual carbs! F7s are for centermounts, or if you have >750cc/cylinder. Drop the size "1" for every 1k' rise above sea level. So if you have dual IDFs in Denver (5k') you'd need main jets around "5" smaller than at sea level.

Related Items...
Air Jet for Weber IDF & IDA, 77401 (Sold per EACH)
Price: $8.00
Item eligible for Econo/1st Class Mail shipment, min ship charge applies
Weber IDF & IDA Air Jet, 77401
Idle Jets for Weber IDF & DCNF, 74405 (Sold per EACH)
Price: $8.00
Item eligible for Econo/1st Class Mail shipment, min ship charge applies
Weber IDF & DCNF Idle Jets

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