MGB /MGA B series supercharger kit for 1800cc inline applications.
Vmaxscart B series MGB supercharger kit based on our best selling A series kit, Complete with pulleys , belt, supercharger, pre jetted and modified 45 DCOE carburetor, decompression plate, air filter and gaskets etc. An easy DIY fit and adds around 35 bhp and 35 lbs ft to what you currently have. Our CNC 6061 billet alloy inlet manifold is used, giving rigid mounting with high airflow, this has a water jacket incorporated for charge cooling to suit hotter climates, see list of additions when ordering to select chargecooler extra parts ( an additional pump, reservoir and radiator)
The kit is ultimately designed for standard or mildly tuned engines, in rev ranges 1200-5000rpm . A decompression plate supplied (stainless shim fitted between two Payen composite gaskets) in the kit to reduce the compression ratio if your engines compression ratio has been increased ( ideally 8.5:1 compression is required and some standard engines have this so the decompression plate although supplied will not need to be fitted) .
A new 6061 alloy front pulley provides a vee drive for the existing water pump/alternator and an extra drive for the supercharger, these two opposing belts give acoustic damping to delete engine harmonics.
Will it fit all B's? ; Earlier export cars may need the tappet chest breather canister modifying if fitted (some early US/Canadian spec cars have this) .
Engines with high performance high lift cams are less suitable due to overlap, but still can be used, and the lower compression gained by fitting the decompression plate will tame the cams current lumpy idle and smooth the power band.
The kit is pictured below on my inca yellow1978 MGB roadster, this was used to tune and develop the kit in 2020.
Stock is based on components to make a kit, please allow 3 weeks for kit build from ordering .
Basic kit listed Includes -see below to add options- :
6061 billet manifold, pulleys, gaskets, decompression plate, fitting hardware, tensioner, air filter, twin drive front pulley, and Instructions.