How big is too big??
 

2 Saturday's ago I drove my Miata to work for the first time since winter.
BORING.
I never realized how bored I was with this car until that day. I have a pile of parts laying around, and I have door bars.
I decided that since I hardly drive the thing anyway, it's time to build my spare motor/ install the door bars/ put a big turbo on it.
Don't give me crap for keeping the stock 4.30 rear and 5 speed, cause I won't hear it.
Turbo selection??? Still debating.
I bought a brand new Tial 38mm MVS v-band external wastegate last week, and I debated drilling out my FM cast manifold and fabbing a custom bolt on V band flange to mount the EWG to. I don't think I'm gonna do that. I think I'm gonna get an AR Tech Manifold. What footprint though? T3 or T25??
I found a turbo for sale local to me...it was a Godspeed A/R .70...dude said it was a GT35. It had a twin scroll flange, blah blah blah...all I can say is, "there is no f'n way I would ever put something that big on my car." This turbo was ungodly huge. I would need to ditch power steering AND Faeflora my frame rail just to get the hood to close.
The turbo size made me think though...it had a 2.5" compressor outlet, and a 4"compressor inlet. If I'm not mistaken, that's the same size as the godspeed 2876 and 3076 compressor flanges? How big are the 2876 and 3076 as compared to my SR20 turbo? I laid my SR20 turbo next to this thing...I should've taken a picture, cause this "GT35" was enormous. In fact, I think it was this exact turbo:
GT35 Turbo Charger .63AR
I'm looking for something more like this:
GT3076R T28 Internal Wastegate Turbo Charger
or this:
GT2876R T28 Turbo Charger ( No Wastegate)
How different are those turbos in physical size?
Anybody have a recommendation for me?
My goal is to max out my RX8 425cc injectors by 10psi. I'm guessing this should be about 260whp?? (correct me if I'm wrong)
Thanks.

So you want it to drive like shit and come on boost super hard for the last 300rpm forcing you to drive the guts off its to not die so its less boring?

Dann

Can't you max out your injectors, and hit over 260hp with that SR20 turbo? You'll have a better powerband, and more drivablity.

Turn the boost up.

his compressor does not the flow capacity to hit 260rwhp.


I cant take this thread serious because of the potential turbo choices.


so therefore, too big:


https://www.miataturbo.net/attachmen...ine=1365509097

Lol. So you're saying a 2560/ 2860/ 2871 is more suitable for my needs?

Thing is, I don't want to make 260whp at 14 psi...I want to do it by flowing more cfm's at lower boost.

If you are going the custom manifold and down pipe route then an EFR is the only solution.

+1

/thread

Link to details?

This is yet another insanely idiotic thread of yours. Seems to me that you are hit and miss: sometimes you're smart and sometimes you go full retard.

Trying real hard to understand what it is you are even trying to ponder here. We've had this discussion many times over, do you have amnesia?

https://www.miataturbo.net/attachmen...ine=1365514027

Id say go GT2560, so just get a used S15 turbo.

Dann

Q: "How big is too big?"

A: "All of it" +1

Definitely

Just make sure to run 4.7CF and post the plot upside-down so that your pathetic inconsistent bs numbers appear "for realz y0" and you can plaster them all over the forum despite no one being impressed or believing you


:fael: :giggle:

http://www.google.co.in/url?sa=i&sou...65601030354934

Bloody picture isn't working but it says he mad.

This is like one of those noob threads...

"Hay guise, I don't want to do anything the way that everyone else does it. I aspire to to build my car in the most difficult way possible in order to obtain purely random and inconsequential goals. It would be best if I could do this by sacrificing powerband, increasing costs, and without addressing weak points on the car. So what should I do?"

If the goal is 260whp, why not buy a 2560 and bolt it on your existing setup and have 260whp. If you're bored with the car and already don't drive it much, that seems like a good option rather than throwing a ton of money at it for a worse result.

+ eleventy billion

Every once in a while he gets drunk and makes a thread like this. Seriously, you can search his threads and you'll see this is probably like the 6th one EXACTLY like this that he's made.

Just like always, he will end up doing absolutely nothing and forget this thread even exists when he's finally sober.


Todd,

I mean no disrespect man, but when drunk try to stay away from the "create new thread" button ;)

I can't remember if I do or don't.

My goal used to be 200whp...then I did it. Then it was 235whp...then I did it.
I said 260 so that when I hit that number and eventually get bored, I'll swap out injectors and have plenty of turbo to go over the 300 mark.
I get it...the GT35 was a dumbassed idea. I really just wanted to see it in person to see the physical size. Vlad, you ran that Godspeed 3076...was that too much turbo? I mean, you made like 319 at 14psi??? (That came from memory) Is that right?? I think that might be too big for what I want, but I think the godspeed 2871 would be a little too small.

It's cool. I'm been laying off the sauce for a while anyway, and the difference from this and my other useless rant threads is that my car is in pieces right now. Therefore, it's some kind of progress?

Yes, I ran that on my previous build.

It was cool and I loved it. That was a weekend street car, with its main purpose being highway pulls against my buddies. I wanted something large to keep pressure (and temps) low so I could do pulls to 140 repeatedly and not melt anything. It was not a perfect concept or setup, so just cause it worked and just cause I liked it doesn't mean I'd want to repeat it, or think that everyone should mirror that setup.

In fact I'm going completely different with my current setup. You could say I learned a thing or two and my opinions and goals changed regarding a lot of things ;)

That's why I wanted a big compressor, and also because I'm sick of the JR M45 similar spool of my SR20. Is it a waste to run a large turbo at low boost and not "use it to it's fullest"? Maybe. When said turbo only costs $270 though, why not? I guess I need to find my happy medium between what I'm going from to what would be total unpractical over kill. That's why I mentioned the Godspeed 2876. If my memory serves correct, didn't Y8s make 265whp at 9.5psi on a 2876? I'm sure a godspeed would make a little less, because not garrett, but how would spool be?

You seriously don't remember this exact conversation we had? I mean, you literally said what you just said:

"I want none of the power, and none of the spool"

I seriously can't believe you want the WORST of both worlds.

You should just get a Rotrex:laugh:

If you think your car isnt fun now with good area under curve, you're going to hate it when it has a piss-poor boost threshold, then power capped so you don't blow your old tired motor.

but who am I to tell you what to do.

I am now a firm believer that anyone running anything larger than 2560 on a stock motor is silly. (I know, I know, many others have been preaching this for years)

Seriously, just get a rotrex. Its exactly what you're looking for: none of the torque and none of the power, and ALL the cool AIT's you're looking for

winner!

Who said anything about me using my old tired motor?

Funny thing is my friend who just bought a brand new Civic Si has been preaching the kraftwerks setup to me. I'm like, "how about no"?

Ok, so I'm narrowing it down to a bit bigger than 2560, but smaller than 2876.
Still want to run EWG though. I have a feeling that I'm going to do something that makes you guys say, "he makes really good useable power and has great spool/ driveability, but why did he do it like that??"

I can promise you that nothing you will do will surprise anyone. There is nothing new under the sun, the only guys coming out with cool "new" stuff are much smarter than you, I, and everyone in this thread.

What you will do will either be smart/logical, or dumb/pointless.

That's about it.

New hotside parts + no EFR = ban

Just get a disco potato.

You never said anything to suggest otherwise...


also:

is a silly silly goal and unrealistic accomplishment. Like you've been here long enough to know this is some n00b ass shit you just posted.


When you start taking yourself seriously, I will as well. Untill then... :facepalm:

lolol +1 and props

Brain he said this in his first post.

I must of missed that when I acutally read his goal about maxing tiny injectors to create 700hp within the horrid block of text.

I'm running the same injectors with the same fuel pressure at 15psi, dc around 90%, 12:1 a/f. Turn up the boost broham.

also, this big is too big.
https://www.miataturbo.net/attachmen...ine=1365559345

No china-turbo, please. Do yourself that favor. There are so many better options out there and turbo prices are getting lower for things like Precision and Borg Warner.

If you're debating a new turbo and modifying your older parts (cast log), do yourself another favor and just do it once and do it right with better parts.

Don't get the idea that you're "saving" anything by trying to put a shine on shit. In the end, you won't be happy because you made compromises.

Good luck.

EFR6758 or GTX2867R

400whp capable terboz that will have plenty of room to grow, and not be too oversized for stock motor, mid 200 HP region that low end will be terrible

I'm too lazy to click on your build thread. What turbo are you running, what whp do you think you're making at that duty cycle?
Also...that's too big? That's an answer know as the deuce bigolo: would ya? "If she paid me enough, then yes."

Buy an EFR and blow up your engine at 12psi. Then rebuild it.

It will be very fun and expensive, I promise!

Its a begi/churbo 2854. Never dyno'd and I'll probably get flamed but I'm guessing around 265-275whp? Its fast. I still find myself giggling like a school girl after roll on's. I get to drive fast cars quite a bit, and the Mazda almost always feels quicker than most of them, at least up to 120mph or so.

How can you be bored with 225whp? My POS probably doesn't make 100whp right now and it's a blast to drive..

Wouldn't a holset like viperormiata's do this? And be relatively inexpensive.