Cylinder Head EMPI GTV-2 Big Bore 98mm

Complete cylinder head EMPI GTV-2 Big Bore.
Sold each.
Cylinder head diameter: 98 mm (bore 88 mm / 90.5 mm / 92 mm).
VW Beetle | VW Type 3 (dual port) engines.
CT/CZ engines.

Up to a displacement of 1679 cc you can, dimensionally, use standard cylinder heads; above that the heads must be machined to the dimensions of the cylinders. You can bolt on your existing cylinder heads, but think carefully - after all, your goal is more engine power, and that will never work with standard valves. On top of that, original cylinder heads are designed for a maximum of 50 hp, so the whole thing is not made to get double the power out of it, both in terms of cracks and heat dissipation. In short, using an original cylinder head is not advisable. You will have to make the step to a cylinder head designed for more engine power and fitted with larger valves. All cylinder heads mentioned here are supplied fully assembled. For more information, see the explanation below - read it carefully to make a well-considered decision.

Note: a cylinder head undergoes many machining operations that release iron chips, so flush the cylinder head thoroughly to make sure no chips remain.

All cylinder heads listed below are suitable if the basis for your engine is a Type 1, Type 3 or CT/CZ engine with a dual intake.

1736: EMPI GTV-2 big bore cylinder head
Head diameter: 98 mm
Bore (mm): 88 - 90.5 - 92
Valve size: intake 40.0 mm / exhaust 35.5 mm

1874: EMPI GTV-2 big bore cylinder head
Head diameter: 101 mm
Bore (mm): 94
Valve size: intake 40.0 mm / exhaust 35.5 mm

EMPI belongs to the very small group of suppliers that do not use the Autolinea base cylinder head but produce it 100% in-house, from casting to final machining. The EMPI cylinder head therefore stands head and shoulders above all other brands (which use the Autolinea base head). The GTV-2 cylinder heads can be fitted directly - combustion chamber machining, intake and exhaust ports, grinding and even reworking the valve seats are not required. EMPI assumes that everyone should be able to assemble their head successfully, not just professionals equipped with a range of machines. The professional will certainly prefer the EMPI GTV-2 over all other brands; the time saved with EMPI heads is in stark contrast to the higher price.

The main reasons for choosing the EMPI GTV-2 big bore cylinder heads are listed below:

- 100% made by EMPI
- uses its own molds; many claim to have their own cylinder head but use Autolinea as the basis
- produced with fully automatic CNC machines for consistent quality
- every cylinder head is inspected and tested
- has more cooling fins and a better design than the original for a lower cylinder head temperature
- the walls of the intake and exhaust ports are thick-walled, allowing further machining
- fitted with more material around the spark plug holes and valves to prevent cracks
- uses 12 mm spark plugs instead of the usual 14 mm spark plugs (add spark plugs)
- high-quality stainless steel valves with dual valve springs, valve locks and chrome-molybdenum valve plates
- intake and exhaust ports are 20% larger than the original factory
- made from a high-quality aluminum alloy that can be repaired afterwards (welding)

When buying these GTV-2 cylinder heads you should use 12 mm spark plugs, so order these straight away.
2016: NGK 12 mm spark plugs

If you are looking for a cylinder head that replaces the original, or one with large valves but designed for the standard cylinder size, look at the references below:

Standard cylinder heads for Type 1, Type 3, Type 4, WBX, Diesel:
(1583) (1871) (1570) (1571) (1723) (1724) (1873) (41722) (41723) (41726) (41728) (41724) (71723) (71724) (71722) (71721) (71720) (71719)

Standard cylinder heads with large valves for Type 1, Type 3, Type 4 and CT/CZ:
(4873) (1735) (41727)