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Max safe piston/cylinder clearance with procharger?

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Old 10-22-2012, 07:51 PM
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Default Max safe piston/cylinder clearance with procharger?

I am reassembling a stock 45 with the original cast pistons. I am re ringing and honing. Can anyone please tell me what the max piston/cylinder clearance I can run?

The engine is a stock 330 hp 454 with an inter cooled procharger that only makes 5 psi of boost.
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Old 10-22-2012, 08:04 PM
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Manual will tell ya .0035 max. From the factory their set up at .0014-.0024. Not sure of the affects the procharger has on those specs.
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Old 10-23-2012, 02:47 AM
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Why, if you have it all apart, would you not just replace the crappy cast pistons with forged pistons??? especially for a procharged engine????
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Old 10-23-2012, 03:34 AM
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nothing is safe with a pro charger and cast pistons..
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Old 10-23-2012, 08:10 AM
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If its a stk 330. Dish Pistons, better rods & crank would be a wise decision IMO. A lot of decent parts out there at a really good prices!
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Old 10-23-2012, 08:27 AM
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Quote:
Originally Posted by mrfixxall View Post
nothing is safe with a pro charger and cast pistons..
at 5 lbs boost with cast pistons,it is a gamble,why not go with forged pistons while it is apart?
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Old 10-23-2012, 04:09 PM
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Cheaper insurance going forged, you don't want to build it all over again because you cheaped out...been there done that not fun
I hate doing things twice lol
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Old 10-23-2012, 07:58 PM
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Default Forged pistons it is then

Thanks for the input,

That is just what Island Racing in N Hero said, get forged pistons, bigger rods,balance, Iconel exhaust valves then check tune on dyno.

At least I will only have to do it right the first time!
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Old 10-24-2012, 12:00 AM
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Quote:
Originally Posted by schurgervt View Post
Thanks for the input,

That is just what Island Racing in N Hero said, get forged pistons, bigger rods,balance, Iconel exhaust valves then check tune on dyno.

At least I will only have to do it right the first time!
You are getting good advise then. It will cost more now to do it right now, but it will cost you a lot more later to do it right down the road. Safe, cast pistons, super charger do not belong in the same sentence, because there is not such thing.
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Old 10-24-2012, 07:38 AM
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cast pistons...procharger....the pin has been removed...
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