Alrighty so currently I am running a supercharger (vortech) system that I am looking to sell. I have capped it out basically and at 9500 rpms it makes 15.8 psi at the intake manifold. I think as long as I calculated right my final compression ratio is around 28 or 29.

I am looking to sell this kit and get a turbo so I can run a dual tune on my hondata. One tune where I run around 15 - 18 PSI and then a drag tune where I run around 22- 25 psi.

My question (Hopefully Nel or 9krevvin or someone else can help) is if I should replace my springs and retainers? At the 15.8 psi there is no loss at all (at least to my knowledge reading the Dyno sheet it makes very steady power even at top end) and my crankcase is definitely taking the beating so I don't think it is going out the head anywhere. Before I got the catch can my dipstick would physically bounce 3 - 4 inches at really high rpms/boost lol. I know there can be some serious after effects of combustion escaping into the intake manifold but at the same time any escape is a bad deal. So just wondering if anyone had any input on hard stiff the springs are or anything. I only have 37,000 miles on the motor and it has only been boosted for maybe 2 or 3k miles.

Let me know what you guys thinks and thanks in advance.

 

I would replace the valve springs and retainers, especially since you are revving to 9500 rpm. When you go FI on an S at higher rpms there tends to be a little valve float. Stronger springs and retainers will help correct this. I personally am using Supertech Dual Valve Springs, and Titanium Retainers. I highly recommend them and have not had any issues with them. Are you going to take the car to the track a lot? Are you going to 2 step the car frequently? If do I would HIGHLY recommend getting new valves as well. I would go with Inconel exhaust valves and bronze valve guides. Some people who 2 step frequently have dropped valves due to the super heat created by 2step. What turbo setup are you going to run? S2000's really hate restrictive manifolds. You can easily make 100+ extra hp on the same boost level, just by switching manifolds.

 

Nice info thanks pretty much confirming how I feel. I'll be using inline's full race kit if I can get from a person here locally that has it. I'll be running e85 as well so hopefully that will help with heat also. I probably won't be two stepping at all to be honest and tracking it at the most once a month but I daily drive it and I like boost lol. So why the bronze guides and not all titanium?

Side note - the e85 lowered the temps on my car by like 15 - 25 degrees which I thought was amazing and even the eighth bulb on the dash doesn't always stay lit for temp. Just thought I'd let people know how cool e85 is.

 

I don't believe they even make Titanium valve guides. Titanium is a great metal, but I don't think I would use it for Valves or valve guides. Inconel exhaust valves have been proven time and time again. For the intake I would go with Stainless steel black nitrided valves.

 

I'm selling a built head as well as a turbo kit (I have inlinepro stage 2 and a full race ramhorn kit, I'm only keeping one)

I can do a package deal/take some of your parts in trade. Hit me up if interested.

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I'm definitely interested. I'll pm you when I get the chance. Is the race kit from inline pro? I'm currently on a vortech set up and am looking to switch to turbo. I'll replace my whole kit when I do it but I don't need any fuel management or injectors.