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Re: 6610 turbo

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10-29-2012 15:53:48

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You could...but.... The turbo engine has oil cooled pistons, keystone rings, different valves and seats, larger injectors, nitrided crank and an oil cooler.
As long as you don't go crazy on the fuel screw it should be ok....


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10-29-2012 16:25:00

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 Re: 6610 turbo in reply to RodInNS, 10-29-2012 15:53:48  
I think his biggest problem would be keeping it cool. Let me re-state that. Keeping it cool would be his most immediate problem. Engine and driveline component longevity would be a longer term issue. I could see it cracking pistons within 1000 hours. A lot would depend of course on how hard it's used.

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10-29-2012 17:15:56

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 Re: 6610 turbo in reply to Bern, 10-29-2012 16:25:00  
Yes, cooling could be a problem. Driveline... Is pretty much the same on a 66 and 76. I would dare say if he set it on a dyno for 85 or so... It should be fine. My 77 is running around 105 for the past 3000 hours and is at 8000 total hours, original other than two head gaskets... I know of one that's probably close to 120... And he's broken some rings. I know the compression ratio is a bit lower on the turbo pistons but shouldn't be a big factor if he doesn't go too far.... I know... Famous last words.


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10-29-2012 18:10:17

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 Re: 6610 turbo in reply to RodInNS, 10-29-2012 17:15:56  
Piston life would defintely be a concern since they are not oil cooled, not to mention the difference in compression ratio. I've seen factory stock 7610s crack pistons, not turned up, just worked hard all its life.

Clutch is lighter on the 6610 (12" vs 13"), and the finals are as well (2 speed vs single speed PTO). On the older 7000s and 7600s, the transmission gears and bearings were different as well.

If it was set to 85, I would agree, it would likely be fine, cooling aside.

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