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Russell Engineering pistons for those who need em... https://www.ausmini.com/forums/viewtopic.php?f=2&t=21253 |
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Author: | drmini in aust [ Tue Aug 08, 2006 7:25 pm ] |
Post subject: | Russell Engineering pistons for those who need em... |
Graham Russell has his latest design Mini pistons here NOW. ![]() 998 FLAT TOP pistons are available in +.040", +.060", +.080" and +.100" oversize. 1275 dished pistons are available in 73.0mm (1360cc) and 73.5mm (1380cc). These pistons are all tuff stuff, cast in 11% silicon aluminium alloy. Call him for prices, on (02) 9630 2195. ![]() <edit> CPOCSM, I must be psychic, haha ![]() <edit 2> was a typo in phone # |
Author: | willy [ Tue Aug 08, 2006 8:16 pm ] |
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WOW! ![]() |
Author: | pristic [ Tue Aug 08, 2006 8:20 pm ] |
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Absolutey Wow... they look great. Peter. |
Author: | gafmo [ Tue Aug 08, 2006 8:22 pm ] |
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What no 1098's ![]() |
Author: | drmini in aust [ Tue Aug 08, 2006 8:23 pm ] |
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gafmo wrote: What no 1098's
![]() None yet sorry, but they ARE coming.... ![]() |
Author: | Lillee [ Tue Aug 08, 2006 9:39 pm ] |
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Sexy! ![]() |
Author: | cush [ Tue Aug 08, 2006 9:43 pm ] |
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are they that blurry in real life? ![]() if anyone is interested.. i'm not sure why i was, but hey... we all love to learn.. ![]() Quote: Silicon is the major alloying element added to the aluminum. It offers a number of benefits in the area of piston production and piston operation.
Machinability Corrosion Resistance Weight Reduction Improvement in Hardness and Strength Improvement in Expansion Characteristics Improvement in Wear and Scuff Resistance Aluminum silicon alloys used in pistons fall into three major categories: eutectic, hypoeutectic and hypereutectic. Probably the easiest way to describe these categories is to use the analogy of sugar added to a glass of iced tea. When sugar is added and stirred into the iced tea it dissolves and becomes inseparable from the iced tea. If sugar is continuously added, the tea actually becomes saturated with sugar and no matter how much you stir, the excess sugar will not mix in and simply falls to the bottom of the glass in crystal form. Silicon additions to aluminum are very similar to the sugar addition to the iced tea. Silicon can be added and dissolved into aluminum so it, too, becomes inseparable from the aluminum. If these additions continue, the aluminum will eventually become saturated with silicon. Silicon added above this saturation point will precipitate out in the form of hard, primary silicon particles similar to the excess sugar in the iced tea. This point of saturation in aluminum is known as the eutectic and occurs when the silicon level reaches 12%. Aluminum with silicon levels below 12% are known as hypoeutectic (the silicon is dissolved into the aluminum matrix). Aluminum with silicon levels above 12% are known as hypereutectic (aluminum with 16% silicon has 12% dissolved silicon and 4% shows up as primary silicon crystals). Pistons produced from these alloy categories each have their own characteristics. Hypoeutectic pistons usually have about 9% silicon. This alloy has been the industry standard for many years but is being phased out in favor of eutectic and hypereutectic versions. Most eutectic pistons range from 11% to 12% silicon. Eutectic alloys exhibit good strength and are economical to produce. Hypereutectic pistons have a silicon content above 12%. r> It is the primary silicon that gives the hypereutectic its thermal and wear characteristics. The primary silicon acts as small insulators keeping the heat in the combustion chamber and prevents heat transfer, thus allowing the rest of the piston to run cooler. Hypereutectic aluminum has 15% less thermal expansion than conventional piston alloys. |
Author: | drmini in aust [ Tue Aug 08, 2006 9:47 pm ] |
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cush wrote: are they that blurry in real life?
![]() Well I was holding the camera, and steadying arm with my knee, and it had been a long day, cush. So, shaddup.... ![]() |
Author: | cush [ Tue Aug 08, 2006 9:57 pm ] |
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drmini in aust wrote: cush wrote: are they that blurry in real life? ![]() Well I was holding the camera, and steadying arm with my knee, and it had been a long day, cush. So, shaddup.... ![]() shaky arm, wonky knee, fuzzy eyes.... all the right ingredients.. ![]() |
Author: | drmini in aust [ Tue Aug 08, 2006 9:58 pm ] |
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... and as it was only for hosting in here, the res is only 640x480 too. ![]() |
Author: | cush [ Tue Aug 08, 2006 10:01 pm ] |
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any hint at the price? how many falken tyres would you swap them for? ![]() |
Author: | drmini in aust [ Tue Aug 08, 2006 10:06 pm ] |
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Sorry no idea on price, if you want `em, ring THE MAN. ![]() |
Author: | cush [ Tue Aug 08, 2006 10:33 pm ] |
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not particularly fussed.. ![]() just in a curious mood tonight... hence the 11% silicon research ![]() |
Author: | gibovski [ Tue Aug 08, 2006 10:34 pm ] |
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OOOoooooh. I belive my engine just had a set of slightly dished 998 pistons ordered for it. I might call tommorow and find out how much for the flat tops. I'm assuming most properties of piston material is mostly to do with longevity and relative wear. Surely the make up of the piston doesn't effect performance too much if at all? |
Author: | drmini in aust [ Tue Aug 08, 2006 10:41 pm ] |
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I'm no material scientist, but I believe more silicon is better for strength, up to a point... probably around 11 or 12%. These pistons are also destined for race use. If more than this 11% was better, he would have specified it. ![]() |
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