The cylinder heads are cleaned, glasperl-radiated and checked. The old valve excursions are squeezed, the basic drillings are anew put and anew excess-valve excursions are shrivelled up by means of liquid nitrogen.
The old seat rings are removed, the basic drillings are milled and new, unleaded-suitable, valve seat rings are shrivelled up by means of liquid nitrogen.
Afterwards the seat rings on our Serdi valve seat treatment are completely anew milled. The valves are checked by means of a Vacumtesters for your density.
Afterwards the cylinder head-Planfäche on ours is just sharpened Horizontally plan sanding machine 100%. In some cases the thick surface should become a level-polished (surcharge 44€) the valve lid also.
The squeeze surface in the cylinder head exercises a determining measure on the quality of the combustion. If this is too big or she does not lie precisely in parallel with the piston ground, means this one insufficient Verwirbelung of the fuel-aerial mixture. The result is an insufficient fuel exploitation and higher mileage and worse achievement thereby causes. We adapt the squeeze surface concerning his size and his corners precisely.
The fuel space volume in the cylinder head has a determining influence on the quietness of the engine. Just with 1-and cylinder engines 2 a particularly attention should be laid out here. The best-balanced mass household uses nothing if fuel space volume are different. This leads at the end to unequal medium pressure and with it extensively also to less achievement and torque. To him we can take remedial action.
Finally the Zylinderköpf, with new valves, new valve feathers, and new valve wedges are completed ready with installation.
- Heads disassemble, clean and check
- Cylinder heads glass pearl rays
- Valve excursions and valve seat rings remove
- Basic drillings for valve seats and guidance provide
- Valve excursions renew (current-optimised) / shrinkage
- Valve seat rings renew / shrivel up
- Valve guidance on final measure rub
- Valve seat rings current-favourably work on
- Valve excursions current-favourably work on
- Admittance canal work on current-favourably
- Exhaust outlet port work on current-favourably
- Valve seats for SERDI 100 mill
- Valve sealing by means of vacuum control
- Quetschkannte on account of the piston form determine
- Quetschkannte in the fuel space on Fräsbank work on
- Fuel space volumes by means of burette auslitern
- Fuel space volumes adapt
- Cylinder heads level loops
- Valves, feather plates and valve feathers mount
- For all BMW R80 2 valve model
- Price is valid for a pair of cylinder head
- Part package in the price contain
Part list (in the price contain):
- 4 valve seat rings
- 4 valve excursions, current-optimised
- 2 intake valves 42 mm, current-optimised
- 2 outlet valves 40 mm, current-optimised
- 8 valve wedges
- 4 valve feathers
