Alright just to give you some background my ap1 is currently at 121k I was at the verge of selling my car just because I felt like the s2000 wasnt much an interest to me anymore but a buddy of mine sparked my interest in it again now I decided to keep it and hopefully turbo it in the future. I'm still a broke college student so it'll take me a while to get all the things I want done so right now I just want to make sure my motor will be able to handle the boost with its high mileage. The s2000 is not my daily I drive it on the weekends when I feel like it so down time is not an issue. I have no mechanically issues what so all right now all fluids have been changed diff, trans, engine, radiator. Although I have yet to change my retainers which I am doing within the next couple weeks or so. I'm replacing both the exhaust and intake side and was wondering what else I should replace while I have it opened up and also OEM vs aftermarket. Valveguides, springs,or any seals or gaskets...etc? I searched but didnt come up with anything with much detail. Any links or info would be greatly appreciated!

info on my car not sure if it helps
03 ap1
121k
Parts that have been replace:
clutch master cylinder
slave cylinder
clutch oem (will be upgrading once the car is boosted)
flywheel lightweight competition
spark plugs, fluids, all regular maintenance

mods:
I/h/e


Thanks in advance

 

For the retainers, you only need to upgrade the intake side to AP2 retainers/keepers.

 

I'm doing both sides for a piece of mind

 

From what I've read, only the intake side fails. Just changing things for piece of mind doesn't make sense.

 

Well it would just make me feel better to know that both sides were changed thats just the kinda person I am the parts are dirt cheap anyways.

 

You could preemptively replace your shift knob.

 

If your just gonna be a dick you can go ahead and get the f@#k off my thread. thanks

 

Assuming it hasn't been done, I would replace the pre-cat O2 sensor. O2 sensors last rated from Bosch 100,000 miles. After than I've heard every thousand miles it loses 2-3% efficiency which leads to poor fuel economy, performance, idle, and the car running rich or lean. AutoZone has the Pre-Cat O2 for 113.00 from Bosch that is an exact fit. I am replacing mine. Im getting bad mileage.

 

I'm not trying to be a dick. My point is that the exhaust side doesn't crack from over reving like the intake side does. If you over rev your motor enough you'll get valve float and bend your valves first way before you can crack your exhaust side retainers.

And, I'm sorry to be the one to inform you of this, but you don't own this thread, so you should learn to play nice.

 

you cleaned your air filter recently? cant think of much maybe valve adjuestment if you havent done one