Turbo & Supercharge (Forced Induction) Posts regarding Turbochargers, Superchargers and any other method for Forced Induction.

7.7-1 Pistons + Rods?

Old Dec 21, 2006 | 07:11 AM
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So yeah was checking kspec for ne new products when i ran across this

http://www.kspec.com/list.php?ac_id=85&ai_id=1771


Kinda cheap considering it comes with rods also... ? Im just a little confused. Im not used to pistons AND rods being anywhere near 300$ .. o well lol, are they good quality?
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Old Dec 21, 2006 | 07:22 AM
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I thought they would of been 1.8 rods and pistons, but they do not lower compression to that ratio.
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Old Dec 21, 2006 | 07:54 AM
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Well Im just wondering if they are strong enough for daily use, especially if you get on the throttle quite a bit lol
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Old Dec 21, 2006 | 07:56 AM
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Yeah those will hold daily use no problem, with the low cr you will see a slight loss on the bottom rpm range.
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Old Dec 21, 2006 | 12:47 PM
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i think those ARE the 1.8L rod/piston combo. and koreans use them all the time.. maybe the real ratio is 7.7:1 and not 8.1:1 like we thought.. those are stock hyundai rods/pistons, and like i said koreans use them for their boost setups all the time. but, if i was to get low compression pistons, that would be way too low for me.

i would want 9:1 so i wouldnt have to push as much psi on turbo to hit the same whp. and i would be beating on the turbo as much.
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Old Dec 21, 2006 | 02:49 PM
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yeah, if those are the actual 1.8 piston/rods... so the new compression will be now the low 7.7:1 and not on the 8.?:1's?

i just hope that we get real facts on the compression ratio... anyone? anyone who know someone who has done this? south korean guys? mad_john? bluetree? kspec?
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Old Dec 21, 2006 | 03:00 PM
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yah, that would be nice to know, thats why these are such a good option for boost, and people can push high psi, cuz it drops the compression UBER low.. i could only imagine putting that combo i with no boost ROTFL.. it would make the tib like a 70whp car.. awwww, the civics could keep up. lmao.gif

what i want to know, is there any car out there besides the VW that has same pistons dimensions as us (CNK, i believe used to sell VW pistons in their low comp. piston set) which would make our cars closer to 9:1 compression, that we could get OEM and alot cheaper than weiscos.

because, i know i will not need forged pistons, and would rather find a totalled :insert car here: and rip out the pistons for 100$ and throw em in, and have a safe, boost friendly 9:1 compression. i just want my compression higher than 7.7:1 and would like it higher than 8.5:1 but lower than 10.3:1 so it can be a little more friendly to what i am going to throw at it..

i would have thought about that SCE gasket, but o-ringing the head, the sealers, and all the labor, plus the ~95$ for the gasket, wouldnt be worth it in the end..
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Old Dec 21, 2006 | 08:35 PM
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"this is roumer control"

FYI


thoese are the 1.8 R&P
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Old Dec 22, 2006 | 02:44 PM
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Whats the purpose of having forged pistons and regular pistons if they both lower compression? strength? lighter weight?
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Old Dec 22, 2006 | 02:54 PM
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forged pistons are much much stronger.
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