Re: Piston and Valve overhaul for R1100RT

[Rainer Enders <renders@xxxxxxxxx>]

On the top in the higher middle area I only used a nail brush. In the 
top lower four corners where the carbon is really hard I used a 
screwdriver to losen the stuff. That's were some minor scratches are. Do 
they matter at all? Where do I find someone who can do the bead blast?

Thanks,
Rainer
PGK75S@xxxxxxx wrote:

>In a message dated 9/24/06 6:48:07 PM Eastern Daylight Time, 
>renders@xxxxxxxxx writes:
>
><< A few weeks ago I lost a lof of oil while driving on the road due to the 
>oil level inspection window falling out. I decided to open up the Engine and do 
>a complete overhaul of the engine. Now I have taken the engine apart and I 
>need some advice regarding diagnostics for the pistons and valves. I have 
>removed the carbon from the piston and I am wondering if I should replace the piston 
>as the piston top surface got slightly scratched. Does this matter at all? 
>The scratches are very minor but you can see some shiny Aluminium in the 
>scratches. Should I have the pistons inspected or just replace them with new ones or 
>don't worry? Or can you sand the piston?  >>
>
>
>What did you scrape the carbon with?  If they're only minor scratches I'd 
>tape up the pistons and have the tops bead blasted.  DO NOT bead the ring 
>grooves, it affects ring-seal and not in a good way.
>
>Cheers
>Paul
>NJ

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