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).

Our ability to respond to emails is greatly hampered by being under-staffed during this downsize transition time. But we continue to endeavor to answer email inquiries as best we can. And we will continue responding to emails through until early March 2023 because we are wholly committed to resolving any other issues that may arise from previous sales. It is still UNCERTAIN, but we may re-open a substantially downsized version of our store again in the Spring of 2023.

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  VW Parts Catalog > Carbs & Fuel System >

Air Jet for Weber IDF & IDA, 77401 (Sold per EACH)
Weber IDF & IDA Air Jet, 77401


 
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 "200" jet is very close to 2.0mm. 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 180 air flowing more than a 190 air, based on orifice length and entry/exit radius, etc.

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


: 77401

Select Jet Size



This small item is eligible to ship via 1st class mail. Shipment via "First Class Mail" will occur automatically if you choose Priority Mail as your shipping metod during checkout AND if ALL of your items for shipment are of a qualifying size / shape / material.

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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. Our jetting guide down below will really help you dial in your carb!

Jets are sized in "milimeters", so a "200" jet is very close to 2.0mm. 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 180 air flowing more than a 190 air, based on orifice length and entry/exit radius, etc.

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.

Normally guys use 175-180s on 40 IDFs with 28mm Venturis. If you jump up to 32s you will likely need 200-210 airs.

36mm venturis work best with 200-210s. I prefer larger airs with larger carbs, so 210-220 for 40mm and larger venturis. 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. INCREASE Air Jet size "4" for every 1k' rise above sea level. So if you have dual 40 IDFs w/28mm venturis in Denver (5k') you'd need air jets around "20" bigger than at sea level, so 175 at sea level, or ~200 in Denver.


Related Items...
IDF Redline-Weber Rebuild Kit, 40/44/48 IDF, EACH, 92.3240.05
Price: $39.95
IDF Genuine Weber Rebuild Kit, 40/44/48 IDF, Each, 92.3240.05
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
Main Jets for Weber IDF & IDA, 73401 (Sold per EACH)
Price: $8.00
Item eligible for Econo/1st Class Mail shipment, min ship charge applies
Weber IDF & IDA Main Jet

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