Quote:
Originally Posted by 79fj40moneypit
The 6.2 has 21.5 compression if you want to turbo it drop it to 18.1 compression, On 6.5 the 'safe' boost is 5 to 7. These 6.2 engines had turbo kits sold by banks for a few years with dramatic engine failures. The main bearing web is the weak link. and the crank is cast not forged. SCAT sells a forged crank now for the 6.5. There is a new high nickel content block, redesigned main web and water jacket 6.5 now that will make 300hp with 18-25 lbs boost. Just be careful with a old 6.2 and a turbo.
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I get that you are worried about the 6.2 and a turbo... I am also. From my research (I talked to Banks and reading posts on
MaximumDiesel.com for the Duramax 6600 (6.6L) GM Chevrolet and GMC diesel engines., talking to detroit diesel specialists), I found this is possible and common. There are many posts on issues, but they talk about problems at 12PSI or more. When talking to a detroit diesel specialist, he explained he recommends the 6.2 w/turbo setup over the 6.5T to his customers. All the people in the field are telling me 10PSI is where I should be.
The Banks kit, sold today is hard set at 10PSI.