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Old 02-11-2013, 03:52 PM
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Hyper Pistons with a turbo?

Anyone done this before? I got a set of brand new kb silvolites dish pistons laying around the garage, wondering if its worth running on a low boost engine something around 5-7 psi maybe 10ish. cr with the heads sould be in the 8:2something area. I can get a part number later today.

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Old 02-11-2013, 04:11 PM
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Originally Posted by bottlefed55gasser View Post
Anyone done this before? I got a set of brand new kb silvolites dish pistons laying around the garage, wondering if its worth running on a low boost engine something around 5-7 psi maybe 10ish. cr with the heads sould be in the 8:2something area. I can get a part number later today.
If you want it to live you should run forged pistons. Starting at 8:2 is fairly safe if you keep the boost down. If you detonate them they will break.
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Old 02-11-2013, 04:28 PM
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Yeah I've heard these pistons tend to shatter pretty easily.
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Old 02-11-2013, 04:34 PM
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I forgot to mention they are for a 383 stroker.
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Old 02-11-2013, 04:40 PM
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Run 93 pump gas, wouldn't mind doing water meth too.
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Old 02-11-2013, 04:44 PM
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Throw a few gallons of race gas on the weekend mixed with 93.
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Old 02-11-2013, 05:02 PM
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But the more I can just run on 93 and use a water meth kit the better!
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Old 02-11-2013, 06:20 PM
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how many turbos? are you planning on 750 plus hp?
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Old 02-11-2013, 10:07 PM
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Just a single, no more then 500 550. I just want a really fun street car that will run 11's and can drive it anywhere and everywhere.
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Old 02-12-2013, 12:11 AM
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You can run 5-7 psi on stock cast pistons without worry. 7 is pushing the safe limits. You can do it.

Do not detonate. Play the curve safe.

A roots is the cheapest way possible to get that level of power.
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Old 02-12-2013, 07:36 AM
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You can run 5-7 psi on stock cast pistons without worry. 7 is pushing the safe limits. You can do it.

Do not detonate. Play the curve safe.

A roots is the cheapest way possible to get that level of power.
I'm not sure why you think a roots blower is the cheaepst route, or why Fbird think that they're more fun. There are a LOT of ways to make good power, some cheaper and some more costly.

Nothing wrong with a roots blower but is far from the only show on the block.
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Old 02-12-2013, 07:45 AM
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To tear apart a engine , get a cam , heads is more expensive. A roots 144 is under $1000. You can easily double the output of a stock 290hp long block.

A good piston , cam, head combo cannot take that pepsi challenge.
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Old 02-12-2013, 11:09 AM
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To tear apart a engine , get a cam , heads is more expensive. A roots 144 is under $1000. You can easily double the output of a stock 290hp long block.

A good piston , cam, head combo cannot take that pepsi challenge.
144 new are 2 grand.
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Old 02-12-2013, 01:29 PM
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Fbird makes a good point about , what you could , and what you should do.

You should look around on the trade and auction listings online. My first BM 144 was $850 in last july. A complete kit. I replaced all the bearings, retimed the impellers, gaskets seals, oil, etc still not over 1000. Took me a weekend. Nothing wrong with used gear.

If you look around you can probably find a few roots type for your application under 1000 in your location. Not everybody is passing around junk.
It depends what your doing too.

My e force has over 10k miles since july, and in a daily vehicle it has beeen terrific. If you have the means and hood clearance they are not beatable in a dollar for dollar comparision. It is that good.
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Old 02-12-2013, 02:13 PM
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A lot more fun than a turbo.
I don't know how you can make that statement, unless you like the look of a blower sticking through the hood or the whine, a lot o fpeople do like that and I can see those being valid points.

Then again a lot of people also like the sound of a turbo so if anything the "fun factor" comes to preferences. I will say some of the newer designed superchargers are pretty damn incredible compared to the older stuff- and of course the same can be said for turbos.
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