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Message: <blockquote data-quote="AvanT" data-source="post: 1064376346" data-attributes="member: 73772"><p>5-speed manual from Evo7.</p><p>Did some research, the Evo7's 5th gear has the tallest ratio among all other Evos.</p><p>The Evo8 and Evo9 has 6-speed, but both still has a shorter ratio, lower top speed.<span style="color: Silver"></span></p><p><span style="color: Silver"></span></p><p><span style="color: Silver"><span style="font-size: 9px">---------- Post added at 03:16 AM ---------- 6 hour anti-bump limit - Previous post was at 02:42 AM ----------</span></span></p><p><span style="color: Silver"></span></p><p><span style="color: Silver"></span></p><p></p><p>Yea bro, finally changed to the Toyota high compression semi forged 1JZ pistons i had in storage. Also replaced the main bearings, conrod bearings, & thrust bearings, there were some worn-out markings, might as well do a proper overhaul & replace what's necessary.</p><p></p><p>The Toyota pistons works great!!! The higher compression pistons makes it drives a like N/A, no turbo-lag at all. Personally, I'm bit skeptical about the compression ratio I have in my 4G63T right now. The seller says it's 9:1 for these 1JZ pistons. But my mechanic friend who helped me with the overhaul did a check & told me they're 1JZ N/A pistons, not turbo pistons.</p><p></p><p>Anyway, fortunately everything fits and engine is running smooth, it even purrs like a cat when climbing the rev, definitely feels more torque-ky....=)</p><p></p><p>And due to safety reason, i've switched off the boost controller, letting the external wastegate's 0.9 bar spring pressure to manage boost.</p><p></p><p>Still running-in the overhauled engine, driving the car below 4000rpm so far.</p></blockquote><p></p>

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