can you replace 2jz vvti cam gear oil seal in car

yes, you can. Nothing can align align too badly with the belt on, nor get unusually stressed. The main seal would be quite tricky tho. I've found an odd T-shaped seal that would do great here. If anyone knows where to order the t-shaped seal I mentioned, please share details. (Here is a short video on that    • short question for www about this odd vvti...   ) While the added thickness might not affect your alignment marks, could it still impact the laser-aligned backlash (and thus throw off the value of the markings)? NOTE: the seal on the middle/traveling vvti gear is actual a plastic coaster with a diagonal slit. use thread lock and torque the 5 screws to 10ftlbs torque torque the 14mm cap to the gear assy at 11ftlbs, new seal recommended.