We have been making valve
guides since 1990, for our own use and supplying the trade.
We use a manganese silicon bronze material which is made especially for us.
The specs of the material are;
CEN CW713R /British
CZ135 /USA SAE CA67410/Germany CuZn40A12 2.0550. This material is specifically
suited to valve guides.This is not the common, off-the-shelf CZ114 which is
NOT suited to valve guides.
Each guide is hand checked for size and runout.
We usually have the following guides in stock:
