I overhauled and ran a similar accord for about 380,000 kms, points of success were.
1 - always ensure the engine gets nice n toasty hot (at least 40% gauge sweep) - this engine has 82C thermostat - its mandatory
2 - always ensure the radiator fans are good - they run in parallel, meaning the cooling fan relay in the fuse box runs both fans at the same time.
3 - always make sure your engine oil is acceptable quality - this is a very old engine and was specced for API SE oil and use the correct accord (4 inch tall) filter.
4 always use good coolant and make sure to burp all the air from the bleed valve near the distributor.
- anyone telling you to run the engine cold is either
1 - not your freind
2 - terribly misinformed
the dried bushings can only be helped by replacing them, the oil spray is actually what has rotted and dried them out, The rear of the car has about 14 bushings in total and a ball joint on each side - total replacement cost with new Honda parts would run you about Rs 40,000 today and takes careful pressing in a press to accomplish, the front setup is similar to the 90s civics but is more robust and heavy.
If your car has dried bushings then its not even 20% close to what its supposed to drive like
these cars with the 1.6 engine, 220 km/h speedo, sunroof etc were imported brand new not used, the used JDM were imported later and usually got into a great maintenance problem due to their vacuum system which had 50 pipes.
The pipe fitting sticking from the silver cover of the manifold is actually a hot air pipe that connects to the under of the air cleaner snorkel - you will see a vacuum pod on the air cleaner - if you look under it you will see the pipe fitting - Its not useful - it was done for good vapour formation in the intake manifold with cold engine - its own thermostat is in the air cleaner lid - open it and you will find it.
Does your car have the original plastic accordion pipe that connects the air cleaner to the fender? - its a real cold air intake setup right from the factory
adjust idle speed from the plastic screw on the carby when the engine is hot - then run the A/C and adjust the A/C rpm from its own little screw - the engine should idle at 850 rpm with or without A/C. The A/C circuit has a delay timer in it that allows a half second delay - this way you never feel the compressor start only hear a click. Does your car have the original 10 cylinder denso compressor or a swapped sanden