• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

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    Thanks for your patience and support!

Zinc Plating Cylinder Studs

grouty

grouty

Auto Lover ...
There have been many topics on here referring to corroded cylinder studs.

I am building another 390 Auto motor, and will need new studs. My thought is to have them zinc plated.

But .... the Husqvarna factory never did this, why ? Does it affect the integrity of the stud ? Does it cause it to bind in the alloy threads of the crank case?. Does it promote corrosion due to the different electrolytical values ?
Or is it that the factory saved a cent by not doing it ?

Just thinking it may help with the rust issue a few years down the line.
 
you can also just apply something to the raw metal, anti seize, that copper stuff you use for gaskets and the list goes on
if you have them plated check the dimensions when finished
 
zinc plating will not add any significant thickness that has any clearance impact. I re do many parts using that. Days of wire wheeling and clearing are long gone. use it for everything from axle bolts, swingarm bolts, kickers, shifters, brake arm hardware, lollipop husky chain adjusters, and cylinder studs and nuts.
 
The main reason for enquiring is that I don't know what grade of steel the Husky factory used. It is bound to be of high quality though.
Will it need de-embrittling after plating to stop it breaking ? I might just do what I have done for years and smear some copper grease over it.
 
Zinc plating will not affect the strength of the cylinder studs whatsoever. I use 3 volts at 300 to 500 milliamperes (depending on size of part that needs plating). My engine studs took the plating perfectly... You can't go wrong plating your cylinder studs...


Desmo
 
grouty said:
Does it promote corrosion due to the different electrolytical values ?
Click to expand...
For those who do not know zinc plating of steel is sacrificial. The zinc corrodes so that the steel does not. so long as there is some zinc in the electrolite (water droplet is commonly drawn) that will corrode instead of the steel. The opposite of a hole in a chrome plating which will accellerate the corrosion of the steel. How the zinc and the cast magnesium in an electrolite (water with dissolved something in the cavity the stud is in) figures I have not thought that through.
 
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