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Old 09-05-2017, 03:56 PM   #1
flssaturday
Junior Member
 
Join Date: May 2017
Posts: 5
Default Twin turbo flathead

Doing a twin turbo setup an a 49 merc 8cm. Any advice or idea's on what internals ate needed to handle boost.
Piston bore,intake valve size,exhaust valve size,gppd came . Ect.thanks

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