Washita Oilstones
Origins Washita oilstones are known and admired by craftsman the world over and all of them originate from a small mountainous region east of Hot …
The Record 74 Auto Vice
The Record 74 is an excellent little vice, it weights 26lbs , has 4 inch jaws and opens to about 4 1/2 inches. It was …
North Bros 1003 automatic bench drill
About a couple of years ago I refurbished a North Bros 1003 bench drill and I’ve been meaning to do a post about how it …
Honda C90 – correct valve clearance
Because the consequence of too tight valve gaps can be serious, it is sometimes said that a ‘noisy tappet is a happy tappet’ (the noise …
Honda C90 – valve clearance
Once you have the engine back together an important job is to adjust the valve clearance (sometimes called “valve lash” or “tappet gap”). The clearance …
Honda C90 – valve seals
The valves are held in place by metal guides installed in the cylinder head and on some C90s (including the c90 z2) there is a …
Honda C90 – valve removal, cleaning and lapping
The steps to remove the cylinder head so that you can properly inspect the vales is described here. The valves are held closed by springs …
Honda C90 – valve timing
Here are a few posts on the topic of valve timing and valve adjustment. Happily, since the c90 is such a simple engine, it is …
Honda C90 – tool kits
Looking at the CMSL microfiche parts diagrams, the older Kowa tool kits – for example the c100 from the 1960s – contained: an open ended 10/14mm spanner …
Kowa tools
Kowa Seiki have made tools for Honda since 1956, initially making their special workshop tools and then going on to make the tool kits for …