[Healeys] Aluminum brake & clutch cylinders

[Bob Spidell]

AFAIK--not far--anodizing is a chemical process that leaves only a very thin deposit to help prevent corrosion; particularly on aluminium surfaces. If it doesn't harden the surface then it doesn't provide much value, as it would likely be worn away after a few applications of the brakes. 

Anyone know otherwise? 

Bob 

----- Original Message -----



I suspect the difference has to do with the smoothness of the finish after 
honing. Most of the hones sold for this purpose produce a coarse finish. The 
new reproduction cylinders (which are not anodized) have a very smooth (fine) 
honed finish. 
Gary Hodson 




I don't know if original cylinders were honed or not. However, after 
honing several original cylinders, years ago, I noticed the brake 
fluid would turn black very quickly. The brake fluid was relatively 
clear prior to honing and I am certain it was not related to a 
contamination issue. 

John Spaur 
'62 BT7