What Version Carb Kit do I need?
The EMPI 40HPMX Deluxe
Dual Carburetor Kit includes Offset aluminum manifolds which will fit with stock upright fan shrouds with little to no modifications. The 40HPMX carburetors are test run as a pair, set for left and right sides, and they come with the float levels checked and set. The dual carb kits include aluminum hexbar linkage, billet aluminum air cleaner assemblies, a coil relocation bracket and all the other hardware needed to swap from a single carburetor to a dual carburetor set up. The dual carb kit will fit 1500-1600cc
based, Type 1, upright, dual port engines. The HPMX Carburetors have a vacuum port so they can be used with vacuum advance distributors.
The EMPI Dual 40HPMX Dual Carburetor Kit includes:
Test run, pre-jetted, pre-set & paired 40HPMX Carbs
Aluminum Alloy Hex Bar Linkage with Steel Ball Ends
Sealed Aircraft Heim Rod Ends
Ball Burnished & Polished Deluxe Offset Aluminum Manifolds
Heavy Duty Steel Linkage Mounts
Billet Aluminum Assemblies with High Flow Gauze Filters
Coil Relocation Mount
Brass Fuel Tee with Fuel Hose
Installation Hardware & Gaskets
Detailed & Illustrated Instructions
The EMPI Dual 40HPMX Carburetors come with the following jets and internal parts:
52 Idle Jets
130 Main Jets
170 Air Correctors
550 Ex. Pump Jets
50 Accel Pump Jets
F11 Emulsion Tubes
Parts for the Weber IDF carburetors are directly interchangeable with the EMPI HPMX carbs. We offer a full line of replacement idle jets, main jets, air jets, venturis, etc. so you can tune the carburetors as needed to suit your engine, click here.
EMPI offers three different versions of what is essentially the same dual carburetor kit. The difference in the kits are the intake manifolds and air cleaner assemblies. What size carburetors do I need?
In general we use 40mm carburetors for engines up to 2000ccs. 44mm carbs are used for 2000cc and larger engines. Cams, heads, valve sizes and other factors will determine which carburetor set up works best. At the end of the day though, when in doubt, go larger as venturis and jets can all be changed to make a larger carb suit a smaller engine as needed.Why choose an EMPI HPMX carburetor over a Weber IDF?
Don't get us wrong, we're suckers for performance and when it comes to VW engines and performance carburetors, few will argue with the quality and performance that comes with the Weber name. That being said, there are better Weber versions than others with the Italian versions being the more preferred. So when EMPI decided to take on the task of reproducing one of the most popular VW performance carburetors they went to the best and made it better. They started with a 44 IDF carburetor as a base for the casting for both the 40HMPX and the 44HPMX carburetors. Some of the first improvements was updated circuitry and profiled throttle shafts to flow better right out of the box compared to the Weber. Now on their 4th generation, having made improvements along the way the HMPX carbs now feature a cast in enrichment plate block off, a vacuum port and extended idle jet tubes to help eliminate clogged idle jets. So, why choose an HPMX Carburetor? Because it works just as well, if not better than a IDF carburetor, it's less expensive, and all the components, jets, gaskets and parts are all interchangeable with the IDF. Why pay more for less?!
California Prop 65 Warning:
Please Note:The information listed below is for stock, unmodified VW's manufactured for sale in the US. VW's are commonly modified and very often parts from another year VW may have been installed on your car. California Pacific JBugs is not responsible for any errors if your car has been modified in any way.