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gray-blue

7 posts in this topic

Posted

What is the difference between the 582 grey and the 582 blue head? Besides color?

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Posted

Antifreeze Bypass to help prevent messing up piston and cylinder walls

 

 

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Posted

So can a grey be converted to a blue?

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Posted

Yes 

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Posted

Ceramic water pump seal also on the blue head. You can google 582 Mod 99 vs. Mod 90 for the full story. I run 2 blue heads and a grey head. Operation and tuning is identical. 

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Posted

roger that

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