Marking Sleevess for 2 Strokes

[marshengnz]

I read somewhere many years ago about this process. The new sleeve is inserted into the barrel and then the port pattern is etched into the sleeve using acid.  The sleeve is then removed and cut to shape.

Can anyone shed light on this process or the acid ?

Cheers Wallace

[JOHN MEAD]

I bought all of my 2-smoke sleeves from LA Sleeve in California and they came with the ports milled into the sleeve.  All I did was install them with the ports lined up and did the finish to the ports with a small grinder.

John Mead

--- On Tue, 11/10/09, marshengnz <helen.wallace@...> wrote:

> From: marshengnz <helen.wallace@...>
> Subject: Marking Sleevess for  2 Strokes
> To: mc-engine@...
> Date: Tuesday, November 10, 2009, 7:35 PM
> I read somewhere many years ago about
> this process. The new sleeve is inserted into the barrel and
> then the port pattern is etched into the sleeve using
> acid.  The sleeve is then removed and cut to shape.
>
> Can anyone shed light on this process or the acid ?
>
> Cheers Wallace
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>     mc-engine-fullfeatured@...
>
>
>

[Ian D-2]

>The new sleeve is inserted into the barrel and then the port pattern
>is etched into the sleeve using acid. The sleeve is then removed and
>cut to shape.
>
>Can anyone shed light on this process or the acid ?


You would have to avoid most acids ( sulphuric, hydrochloric etc ) they
would attack the alloy casting much more aggressively than the cast iron.

Phosphoric maybe ?  ( But don't take that as a recommendation )



Cheers             IAN


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