I've heard that the worst thing you can do is start your engine. I have also seen an Accusump system used as a pre-oiler. Just close the valves before you stop the engine and open the valves just before you start it.

 

Accusump claims a 50% reduction in cold start "scuffing wear." Accumulators like the Accusump also prevent loss of oil pressure during cornering or hard braking.

I've also recently seen some info on a pre-oiler that used some kind of electric pump or motor to provide oil pressure before a clod start, but I don't recall where I saw it.

Has anyone lost an S2000 engine due to oil pressure loss during high G cornering or braking (other than cases where the oil level was obviously too low)?

 

The reason highway mileage is higher than "city," is becuase on the highway you tend to maintain a constant speed. In stop and go traffic, you waste a lot of energy slowing down with the brakes, and have to burn more gas to get back up to speed every time you use the brakes to slow down. In a way, the brakes could be seem as the biggest waste of gasoline, becuase all the energy that is converted into heat by the brakes is a total loss. In general, the best way to increase mileage is to maintain your momentum.

BTW, I think MikeGarrison already said the same thing earlier, only in somewhat different terms.

 

and to maintain momentum you have to apply a certain percentage of throttle. so would it be better to drive at the lowest rpm possible with more throttle? or in a lower gear with higher rpms and less throttle? on the highway the rpms are generally higher than city driving, and throttle percentage is lower. if in the city I accelerate at 30 percent throttle but don't take it past 4k rpm, that technically translates to: more throttle, less mpg. regardless of rpm? of course if we go into the 6k+ rpm territory it might be different. I'm just thinking it would be better to cruise in 5th when your doing 40mph since you don't have to apply as much throttle to maintain that speed and the rpms are only slightly higher, similiar to what you would see on the highway.

 

Well what determines wether or not I drive in higher gears at 45 or 50 mph would be if im on my bluetooth or not! LOL. A lot of my friends complain about the engine noise although I LOVE it!!

 

Yes. Banked oval tracks and racing slicks have eaten a few S2000 engines due to G-induced oil starvation. The evidence for this happening in other circumstances is more spotty.

 

I had no idea anyone was running an S2000 on any kind of banked oval. Places like MIS have such steep banking that you can't even stand, and I believe oil can all end up on one side of the pan if the car is *stopped* up on the steepest part of the banking.

Are any of the guys running accumulators or dry sumps?

 

It's been tried. Neither is especially practical in a car that sees any street duty at all. Accusumps are notorious for occasionally puking oil all over the place, and re-engineering the S2000 engine for a dry sump is a major undertaking. A few have tried it, but I haven't heard of any that were considered big successes.