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| Molloy |
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He lads any advantages to be had from slapping in a new set of racing pistions? (not sure the names of brands yet) would you get much more power from doing it?
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| Interceptor |
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depends on the piston crown, wether its domed, flat, dished, etc, as well as the compression height (both being factors in the compression ratio, higher CR=more power), otherwise they're just more resistant to cracking, deforming from extreme heat, etc
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| Big Kev |
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Interceptor wrote: depends on the piston crown, wether its domed, flat, dished, etc, as well as the compression height (both being factors in the compression ratio, higher CR=more power), otherwise they're just more resistant to cracking, deforming from extreme heat, etc
Performance wise the benifit isnt that huge...BUT when looking at performance modding these are a must...as well as other bottem end work to beef up the strength of your motor...no point havin 300 or what ever kw if it cant last a week or a dyno runa at that level.... ACL Race series pistons \ are normally the ones people get installed or custom ones
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| Molloy |
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Ahh ok thanks what price would I be looking at?
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| Bert |
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Nah, s**t man. To get the full benifits of "Racing Pistons" You're gonna need to throw in some racing rods and top it all off with a 3/4 race camshaft. That should be full sik bro.
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| Molloy |
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sounds fully expensive uleh,
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| mrnasty |
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another thing with race pistons, especially the ACL RACE series, is they are a little bit lighter than a normal piston, on there own it might not sound like much (i think its only a couple of grams difference between a standard slug) but think of 6 pistons at 5,500RPM, theres alot of weight difference there.
Theres not a whole lots of power to be made by just putting race pistons and rods n whatnot in, thats realy a strength thing, your power comes from either head/cam selection, or turbos/superchargers Forgot to mention, ACL RACE series rebuild kit for me 4L was about $895 from the local parts joint, which is pistons, gaskets, rings, bearings, and a cool acl sticker 
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
that depends on what ACL race pistons you get. alot of them are forged now aand are alot weigh quite alot more than cast pistons.
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| Big Kev |
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tickford_6 wrote: that depends on what ACL race pistons you get. alot of them are forged now aand are alot weigh quite alot more than cast pistons.
Yeah for forged most places will charge over 1K just for the the parts themselves....I got quoted i thnk round the $1400 for ACL race series bearings and forged pistons done for a low comp turbo setup
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| KTASTRPHE |
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A couple months back at a cruise I was talking to a bloke with a VT 5litre commodore and he was trying to tell me that he had "forgies" put in his car, and nothing else done and he was running 12 second quarter miles... maybe in commodore land they give you more power?
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| mrnasty |
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i think having a commodore allows you to tell fibs...and honoustly think people will beleive you.
A guy was trying to tell me the other day that his VN 'interceptor' V6 manual, with 'illegal fuel managment' different coil and distributer + diff gears would beat my mates 312rwkw VT SS manual...  and that his 'interceptor' has seen high 12's before. i think he has his numbers mixed up, high 21's i'd beleive.
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| cooki_monsta |
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lol, some competition for my bare stock eb then
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| mrnasty |
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oh yeah its great, he took the VT SS to 3,500rpm (the cam is only just kicken in) through 4 gears, and i had to put my foot flat and take my car to redline just to sit next to him.
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