s2000Junky

Just remove the rear tray and then access from the trunk after removing the trunk divider. Its not that bad. But helps to have done it a few times so you know what you are feeling for. Seeing everything is the problem, so you have to go by feel. I can swap a fuel pump basket in about 15 min. Fumbling around with removing the rear tray takes longer for me.

gotembro

^^ did you upgrade your fuel lines to run 85 just another questions I'm still gettting my parts together for my build but I'm doing E85 almost for sure

Any downsides to run E 85 ? let me know

s2000Junky

I dont run E85 so someone else can chime in on those particulars, but believe its just the fuel pump not lines required. Just commenting on your fuel pump swap so your not doing more work then necessary.

EOE

From my experience if you open the top 1/2 way (I’m 5’8 and athletic) and put a nice cushy pad on the elbow pad then your knees on there, just don’t you dare put weight on the leather seats and stretch them, you’ll see everything you need to when doing the pump.

hafftrak

Honestly, if you're wanting to beat Hellcats and ZL1s in a straight line, you'd be better off starting with something else.

noodels

^^ LS1 V8 engine may help

DavidNJ

Those cars do the 1/4 mile in the 10s and 11s at trap speeds of 125-130 on pump gas while meeting emissions laws. They both use positive displacement superchargers with air-to-water intercoolers. The Hellcat Demon even had a chiller.

To match them a 5:1 to 6:1 wt/hp ratio is needed with a flat torque curve in the powerband. For a 3000 lb car that is 500hp to 600hp. Obviously, not passing emissions testing. On ethanol, it should be possible with a fairly straightforward turbo kit...including SOS and Ptuning with their bigger turbos. Probably close to the limit of what the transmission, differential, and axles can take; some people report problems at those power levels.

On pump gas??? That would be an expensive motor. It will need low compression pistons (8.5:1) to get the boost up. Probably bored and stroked to get the displacement up (e.g. 2.4L). Reworked head to have valves, springs, retainers to allow 9500-10,000 rpm. Maybe ported and with a turbo cam (i.e. fast ramp and minimal overlap, EC@.050" at TDC and IO@.050" at 10deg BTDC) to increase VE. Possibly a different intake manifold. The engine builder (4P, ILP, etc.) who sells the head should be able to recommend a cam. Now a 2.4L spinning @ 10k rpm with 16psi of boost and no breathing or turbo restrictions Is more or less like a 3L@8000rpm at the same boost...600hp should be possible. It could easily be streetable, although the turbo to hit that power may be a bit big for a 2.4L at 2500 rpm.

4P build\t a 2.5L K24 for Wiesco. They spec'd it as 600hp on pump gas, 800hp on E85, and 1200hp on C85.


A little bit of an advantage can be obtained by using a chiller with a reservoir and an air-to-water intercooler. A dry ice chamber could be used instead of the chiller. The drop an IAT would increase the air density equivalent to 1.5-3psi of boost. Sam driveline issues apply.

s2000Junky

Water/meth injection kit. Offers race gas detonation suppressant, with the added/superior cooling density/IAT drop, and keeps the top end steam cleaned. Nothing beats it. I run it with my measly 7psi supercharger just to get the benefits of it.

Mijae007

Nothing but good running E85. Running more fuel means better heat management in the engine which means more reliability and safer operation. You can really push the stock block and probably push upwards of 600whp safely on a solid tune on E85.

You will need to check a few things to run E85. In regards to return fuel line, all AP1's are good to go. 04-05 AP2's should be good to go. 06-09 AP2's will require a return fuel line (as it only comes equipped with a feed line unlike the 99-05 S2Ks). The return line will allow you to run more consistent fuel pressure throughout the rpm band and higher boost levels. Without it, you will be limited to around 400whp or less on E85.
BTW stock fuel lines are good to go. There's a myth that factory fuel lines arent designed to handle E85 and that they will corrode...this is not true. You just have to make sure your car has both a feed and return line to the tank.

Also keep in mind, your tuning options will change based on what generation S2000 you buy too.

Also if E85 is your goal, you will need to consider all your fueling components to run it. Meaning larger fuel injectors, larger fuel pump, and fpr to accommodate for the increased fuel use. Remember, E85 uses 30-40% more fuel than pump gas to make the same amount of power.

gotembro

What type of gas mileage are you getting on your tuned E85 car? I know it would depend on how you are driving it; normal? spirited driving?