ITB vs SC vs Turbo

[AusS2000]

Ethanol has lower calorific content than petrol so that's a negative. On the positive side it has a higher octane (resistance to pre-ignition) so you can run more timing and compression. But compression is a physical change to the engine so requires a rebuild and I don't see how timing alone with give you gains over petrol.

So if you want NA ethanol be prepared for some engine work. At least shaving the head.

[AusS2000]

BTW, when you read through this thread weight posters opinions by what level of experience they have personally had. I note one poster suggested a turbo will kill your gearbox, diff and driveshafts yet drives a DC5 type R. Not saying he hasn't built an FI S2000 but still...

FI doesn't kill your gearbox, diff or driveshafts, stupidity kills them. FI just gives you the tools to do it quicker. Ask me how I know?

[senna]

Ethanol has lower calorific content than petrol so that's a negative. On the positive side it has a higher octane (resistance to pre-ignition) so you can run more timing and compression. But compression is a physical change to the engine so requires a rebuild and I don't see how timing alone with give you gains over petrol.

So if you want NA ethanol be prepared for some engine work. At least shaving the head.

This is good info...

Timing alone can gain power IF the engine combo has been running retarded timing due to using fuel with a low octane rating. Although if this is the case someone has wasted their time...

E85 can provide good gains on N/A motors, however they need to be high comp ratio (higher than stock Honda comp) to see the gains.

F/I motors work so well on E85 due to their Effective compression. An example is my turbo falcon, normal comp is 8.8:1 but with 19psi peak boost it is running 20.2:1 comp.

Use this calculator if you are interested: http://www.dragsource.com/index.php?...s&calctoview=3

[XB-16-AX]

I think I know what graph ur.talking abput. There are mid range gains of.about.20kw but peak was only about 5 ish.

For mid range u mentioned then yes.

But overall power gains then its 15-20kw gains

[Snoop_gee]

tested on a private road.
Supercharger - FTW!

[unl3a5h]

FI just gives you the tools to do it quicker. Ask me how I know?

how do you know? :P

[AusS2000]

You had to ask didn't you!

http://www.s2ki.com/s2000/topic/7998...ff+destruction

http://www.s2ki.com/s2000/topic/7040...__hl__axle+aus

[gbpracing]

Wow. Baller.

With 4K you wont get a hell of a lot.... basic power upgrades.. every change has a knock on effect as already mentioned by Dakbak.
Read as many forums as you can, learn from these, look at other engine builds ask more questions. Sort out the bull shit from the facts.
Some guys love turbo some are more purist and love the high reving all motor builds as I do. I have driven them all, from Porsche GT2's GT3, Honda S2000 turbo with 420whp to All motor race engines of every make. Each gives you a different sensation when driving hard.
Take your time to decide and do it once dont cut corners and do things on the cheap because it will end up costing you way more...

[AusS2000]

some are more purist

Or wimps.

[greek_rambos2k]

noooo dont talk about diffs. mine is making noises but it has been for a yr and my LSD still works so meh

[AusS2000]

If I were you I'd pick up jowjeh's dud diff and have it sorted before yours blows.

http://www.s2ki.com/s2000/topic/948020-s2k-dud-diff/

[connorling]

Well currently running ad08 tyres. 225 front and 255 rear so tyres are qute good. Also i have put better brake fluid in and ds2500 pads. Im getting a new exedy hd clutch soon as mine is slipping. I wanted around 300hp at the wheels. Ish

let me know where and what i can get to achieve 300 rwhp safely with 4k budget, i would like that much power for that little money. Thanks

LOL