TerminatioN

Yeah, it definitely is. Not worried about hitting 500 though, so it doesn't really matter. The goal is high 10s on drag radials. I don't think I'm going to make it there, but we'll see. If I can get my 60' down to 1.6 or so (which seems to be possible) I shouldn't be too far from it...

Thanks for the input. Any idea if the GT3076R is efficient at that PSI? And you don't think I'll have issues with detonation/knock on E85 at that PSI?

gsx2004

are you looking for something like this?

05TurboS2k

Probably been said by now but it's about FLOW not boost. Thus this is a CFM convo rather. I see by the post above it's gone that direction.

05TurboS2k

E85 has nothing to do with it then, might as well leave that factor out to not confuse people about your questions.

The turbo is limited by one factor, it's ability to efficiently flow air.

05TurboS2k

^ PSI has nothing to do with it, rather CFM. That log manifold is going to as others said, produce a lot of heat, I expect it will be your limiting factor before a 3076 in .82 trim.

05TurboS2k

Here's some REAL info that might be useful, two days ago I got tuned with the SAME TURBO .63 TRIM, MANIFOLD, INTERCOOLER, OIL RELOCATER, TIAL38mm, nearly the same setup you have. Only real change is I still have a 2.75 downpipe which is a bummer but soon to change to 3.5" You'll net a few hp better than I cause of the DP right there.

I'm making 360whp right now as of 2 days ago. I also was on a dyno that reads quite low according to most everyone.

I was unable to hit 400whp due to heat because this manifold is a real POS, that would have been right about my limit.
.
At 15psi I was pushing my luck because of this heat, I had tons of turbo still left however as I'm on a SC34-BB in 82/.63trim 545hp rated where as yours is good for a bit less which means even more heat in your case unfortunately. Your .63 trim is probably going to top off in efficiency before 400whp but in .82 trim if you were willing to change to that you'd be able to make 450whp no problem giving up 300rpm later peak boost or so. The GTX30R could put you in the 600whp range perhaps and still spool close to that .63 you have no but it's $$$$$$. Just a thought, in my mind the GTX30 is the best turbo for the S2000 overall.

E85 is going to get you a little further because of less heat in this case but only so much. I expect you've got another 20% or less to gain at max.

Your inter-cooler is way too small, it's lacking the ability to cool air past flows needed to make 350hp or so. That's what that thing is rated for btw is 350hp. Cooler charge air will help you keep temps down so I suggest going to one made for 450hp, don't goo too big or you'll just create lag by having to charge more piping. Also your IC piping is limited to about 450-500whp before it starts to be a problem to some degree.

Your number one problem is that manifold, Pfab short runner would probably allow for 30whp gain without a doubt.

-Greg

TerminatioN

I know what a compressor map is and where to find it. Unfortunately I do not know how to properly read/interpet one. Care to help me out?

I understand that it is not PSI, but rather CFM that matters, but as I said, I do not properly know how to calculate/read the compressor map, so I don't know the CFM, and thus PSI is what I'm using to refer to how much the turbo is flowing. Its not as if I'm talking about PSI in regards to any turbo... If you know how to calculate CFM and I refer to PSI, you should be able to convert it since I've designated the specific turbo.

Furthermore, I am asking in PSI because that is what the EMS is set to read/use, and I will be limiting how much the turbo will flow based on PSI. Thus instead of asking "how much CFM" and then having to convert back to PSI and possibly/likely messing it up, I'm just asking in PSI. I'm pretty sure this is common practice.

Yes, I know E85 will not change the flow of the turbo, I was just trying to find out what the turbo was efficient to and if E85 would support that ammount of air without detonation/knock.

Thanks for the info though.

The log manifold is no doubt restrictive, and it is likely that I will eventually upgrade to a full race ramhorn. But until then (as I've said) I was just trying to make the best out of what I have. I'm not looking to hit some magic dyno number. I just want to make the most I can make on my current setup and see what kind of time I can put down at the track.

05TurboS2k

You can see from the map at 35-40lbs/min this thing has no problem, unfortunately the OP is probably hoping for a setup that flows 50lbs a min or better..... quite a bit out of the efficiency range.

The image is a .60 trim so this is close to what he'll end up with then.

THIS would be great for him. He'd be set for his hopes IMO.

05TurboS2k

Very roughly, 1lbs/min = 10whp.

So have a look at these maps and you can apply the lbs capable before pressures fall off.


Back to his original question though of maxing out. Probably not much past 400whp even with E85 is my guess though I don't know much of E85 capabilities yet.

volkdc2

It's possible to achieve 500whp on e85/q16, at around 20 psi on this turbo, that is, on an ELM, however, the log manifold will restrict you. A lot.