there is a thread in the dynoflash section about an ix that was amazing. i dont even think he had cams, just stock turbo and a 2.3 stroker. he hit max torque of like 4xx and held that torque all the way to redline which must feel pretty good

 

BULL**** I doubt there is a stock turbo out there that holds 400ftlbs at redline.

My 3076 made 480 and tapered below 350 at redline man..

Scorke

 

[QUOTE=mudduck;4482171]1) Evo IX turbo with Ti turbine and BB conversion - the guys over in the UK - who are more into rally type than drag racing - quote about a 500rpm increase in spool, which I'll assume should help out low-end torque some.QUOTE]

bingo! 2.0 ltrs and these turbo are deadly! its better if you have the turbo worked on rather than just the BB core put in. there are a few trick things they (evo400 is one guy i know doing them) that make the turbo flow better and give you better boost control.

Chris.

 

here is a graph of a 2.3L + IX turbo

I wonder what that graph would look like if they slapped an EvoGreen on that car.

Go to page 5 for the updated graph.

https://www.evolutionm.net/forums/sh...ghlight=pruven

 

Well, that right there throws everything off. 4th gear doesn't count - we're talking about 3rd gear when referring to rpms and such. 4th gear has much more load, so of course it's going to spool up the turbo much sooner than 3rd.

 

You're thinking of the HP line - it stays at 360-370 all the way across, but the torque line drops off steeply from 500 to 250. 400wtq at redline would be 533whp, I think...

 

Thanks, WOT - btw, have you noticed any issues with drivability with your ported TB? My Evo is my daily driver, and sees a decent amount of stop-and-go traffic...


Anyone know which tuner is a MIVEC god? and I would assume that using the MIVEC to make me hit peak torque @ 3200rpm would somewhat negatively affect my top-end? I know, you can't have your cake and eat it too...

 

Are you going to auto-x or something Mudduck? Why are you so concerned with low end torque? I think it sounds like you may be driving the wrong car if you want low end torque.

 

Ya, get an sti.

 

Not even. I just dont know why anyone with a 4-cylinder TURBO'd vehicle would be asking for low end. Its just something that this configuration is inherent for NOT having. You can get a small turbo and make it spool quickly but with a redline of 7000+, youll never have much below 3000rpm ever. That is something a V8 N/a or supercharged could give you.

Try this:

 

The recipe is simple. Want big torque and quick response for street and short track use? Mimic WRC strategy.

 

lol. how about a supercharged 402 LS2 making 800lbsft at about 2krpm??

Chris.

 

couldn't agree more. 2.0ltr with forged internals running about 10.0-1 with the stock turbo. if you can afford it get a bb core put in it. also you will want to have some nice HIGH LIFT rally style cams and some pullies so you can get the timing just right! if you want even faster responce then it s time for some anti-lag!

this is a treied and tested route. but it can get as exspensive as going for bigger power.

also have you thought about weight reduction??? will help make the car faster on and off boost and help with the handling and stopping to!

chris.

 

Soon2B, I realize that the Evo is not likely to have any serious torque under 3000rpm. I'm fine with that. I simply love the feeling of going WOT in a lower rpm and transitioning from off-boost to peak boost spike. After the boost spike, the rest of the pull in a given gear is somewhat of a let-down for me. (Maybe that's because I've never experienced a 35r before ) I want the torque curve on my dyno graph to shoot as vertically as possible up to 450wtq at around 3000-3500rpm in 3rd.


It's just personal preference, that's all. There's plenty of people on the Corvette boards and Cobra boards that cannot figure out why the hell we would choose to purchase and mod a 2L 4-banger with AWD to street or drag race. But there's something fun about doing the unexpected!


Personally, I'd rather have a car that hits harder in the low end than the top-end. It doesn't have to spool at 2000prm either. I just want that effortless feeling of leaving another car behind without having to wind the hell out of my engine. The Evo may not be made to ever have monster torque down low like a V-8, but it can do one thing better than a lot of the Cobras and Vipers out on the street - put the torque down to the ground without losing grip.

 

Ted B, could you be a little more specific as to what you have in mind here? (tried searching on this forum, but didn't find much regarding WRC set-ups)