The replating process is full of pitfalls , but most are well versed in what is needed.
Yes , 4043 is the welding rod of choice , and that works very well.
The important deal is getting the cylinder up to a temp , high enough to prevent excessive stress from weld pool shrinkage , but to not destroy the heat treat.
NZ Cylinders here , heat , then weld , then run thru the bore and or grind away most of the added excess filler , then prior to final hone they do a micro piening process to reduce the localized stresses.
One big issue may platers dont do properly is that as they VERY rough hone the bore ( for nicasil adhesion ) this removes much of the chamfer on the Exhaust port alloy timing edges.
So I have to give written instruction every time , for them to rechamfer this in the alloy prior to plating - if they dont , then as soon as I remove the chrome flash lip inside the port
then there is insufficient chrome depth within the bore to put on the required vertical chamfer.
And as all you guys on here should know by now , you dont need ANY chamfer on transfer ports - instant power loss , and no effect at all on ring life.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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