It is strongly recommended you purchase a pair for optimal performance. Note: These heads are priced individually. If you would like a larger bore please specify the size you need when placing your order below. Mofoco 042 heads come standard to fit stock 85.5 Cylinders.

More Cooling Fins than the competition - Thicker & Stronger.

Thicker Port Walls & Larger Intake Face.

Larger & Smoother Port Design for Better Flow.Also safely runs with leaded, aviation, and racing fuels without modification.Approved for unleaded, plain old gas station fuel!.These 042 heads are not simply rebuilt off Brazil castings or made in China.ĭetailed specifications for the MOFOCO 042 Cylinder Head: from the raw materials to make the casting, all the way to the final product to be installed on your engine. This means the 042 is manufactured 100% in the United States. Mofoco 042 Flow Numbers-Tested at 25' with an IDF manifoldĬast at Eck Industries in Manitowac, Wisconsin With the intake port volume at 62cc, the port velocity is perfect for a street performance cylinder head.

but, new VW cylinder heads can be changed without splitting the engine case.įeaturing 40mm stainless steel intake valves and 35.5mm stainless steel exhaust valves, 042s are the sweet spot between horsepower and efficiency on vw engines from 1600cc to 1914cc.Īfter 20+ years of success, the 042's have been upgraded for more flow as cast, no step 55cc combustion chambers for maximum quench, more airflow through the head for maximum cooling, added material so boring for 94mm cylinders won't break through to the fins and now come standard with chromoly retainers. and the air flow, port velocity and valve size of the headsĮngine size can't be changed without installing larger pistons and barrels or a stroker crank.

This tool is a precision quality product, not a cheap toy like most people sell Get a genuine GENE BERG FLYCUTTER. This is because horsepower comes primarily from two things: For heads from 1967-on with the 6 locating knobs the GB 705 boring plate is required or the heads must be milled flat. VW cylinder heads are the best 'bang for your buck' on increasing horsepower in your Volkswagen engine. Mofoco 042 heads come standard to fit stock 85.5 Cylinders. The sweet spot between horsepower and efficiency, Mofoco 042s are rated as the highest flowing as cast round port heads available. More high detail pictures available further down the page.

49cc vw heads flycut