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Message: <blockquote data-quote="zuruzuruz" data-source="post: 1064020055" data-attributes="member: 42453">sorry for the late update.. but here's the update of my mod which i had done 2 months ago.. For the pistons, I just took an oversize piston of kia specra that is already sold in parts shop, which has a bore of 78.5mm. Sadly enough, the piston is not domed at all.. :( My foreman prefer taking this option rather than finding other engines' pistons. Since this is really made for kia spectra.So, my foreman advised me if still want to have a bigger CR, maybe can skim head to 0.5mm to have a higher CR. After asking this and that, I finally agree to the idea. After taking measurements here and there (I dunno what my foreman told me, chamber clearance blah blah) he said my CR shud be 11.3.However, the sad part is, after all that CR increase from 9.5 to 11.3, prior to dynotuning and all, my whp just increased 6whp.. Now im stick with RON97 because of higher CR, but the whp increase is just... what u call.. doesnt cut it.. Anyone can give their opinion or experience after increasing their CR?</blockquote>

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