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Old 03-04-2017, 06:28 PM   #1
hou30guy

 
Drives: 2011 convertible 2ss/rs
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408 stroker ring gap clearance for agp twin turbo

Does .007 piston to wall clearance and .0025 top ring and 2nd ring .0030 , does this sound about right. Its a 408 stroker, 4.030 bore,4 in stroke, cp bullet pistons 2618 forge with heavy duty wrist pins, agp twin turbo kit,3200 circle d stall
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Old 03-04-2017, 06:38 PM   #2
hou30guy

 
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My compression ratio is 9.67:1 so im thinking 12 to 15psi on 93 and 15 to 25psi on e85
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Old 03-04-2017, 06:49 PM   #3
adam0311
 
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If I were you bud I'd look at the manufacturer specs. It should be advertised on the box /on the build sheet or at least their website
They should give you all numbers. Na ,nitrous and forced induction
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Old 03-04-2017, 08:42 PM   #4
hou30guy

 
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Piston manufacturer? Is so I'll have them monday morning i was just trying to get a leg up on it before it comes, i guess ill wait thanks
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Old 03-05-2017, 06:35 AM   #5
stevieturbo

 
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Quote:
Originally Posted by hou30guy View Post
Does .007 piston to wall clearance and .0025 top ring and 2nd ring .0030 , does this sound about right. Its a 408 stroker, 4.030 bore,4 in stroke, cp bullet pistons 2618 forge with heavy duty wrist pins, agp twin turbo kit,3200 circle d stall
Ask CP what bore clearance is correct, although 7thou sounds a lot.

As for gaps...contact piston supplier or ring supplier. But a simple rule, never too tight.

And even a few thou large, you'll never tell the difference.
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Old 03-05-2017, 06:45 AM   #6
Ls1408cp
 
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Get a good engine builder.
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2014 1LE 2SS/RS
Huron Speed turbo kit
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