Quaetion about honing alusil barrels.

[theweaver]

I have posted my problem on the site, and have not yet recd a satisfactory answer regarding my thoughts about honing alusil barrels. The wear on my barrels is so minimal!
I understand that they have a coating, but cannot establish who can do it, or whether enthusiasts have had success honing and replacing rings without the coating, nor what will happen to the barrels if they are not coated etc. I was also told that there are articles on the site which can point me to the problems and solutions. All I can get is advertisements when I do a search on this site.

Ultimately, if there is someone in the Uk, preferably in or near to the Staffordshire area this would be great.
No one seems to know what this mysterious coating is. I feel sure that this is something which when found out is quite straight forward. From a purchasing background within a large factory which I have, it would be quite easy to source if we knew what is is!!
My local auto machinists treat Porche around here like the plague! Should you wish to look at my topic 911 head bolts, you perhaps could see mine and others' dilemma.


Kind regards Geoff Degg

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This post was auto-generated based upon a question asked on our tech article page here: Pelican Technical Article: Machine Shop 101 - 911 (1965-89) - 930 Turbo (1975-89)

[Nick at Pelican Parts]

I have heard of people doing this by hand and having success, however I would not do it myself unless I had a local machine shop with Alusil machining strips.

Once the silicon is ground with normal maching methods, you lose lubrication quality by grinding the silicon off the cylinder wall.

Here is thread discussing it: honing alusil cylinders

- Nick