Yes, the GTX is a bolt-on upgrade for a GT that adds 100+ hp with the same spool.

And the EFR is even better (but even more expensive and requires different turbo manifold for clearance).

EWG sounds the same if you pipe it back in downstream, and is unbearably loud if you don't. Creep can be solved in other ways, the big thing the EWG gives you is controllability over a wider range of EBC.

--Ian

How much is a new gtx turbo that spools good and can do 400hp?

The efr6258 I bought for $1260 shipped and last I checked a gtx equivalent was considerably more $$$

Where can I find a 6258 for $1260? Everywhere I look, there are at least $1700. I'm all in for saving ~$500.

I believe the $1260 price is without the turbine housing and the $1700 is with. GTX2860R is around $1400-1500 with.

--Ian

Kinda need the housing to run the turbo, I thought maybe he had some secret (not so secret) hook-up.

Industrial injection
800-955-0476
Ask for Gavin, tell him it's a miata turbo special price.

Nope, full efr6258 turbo with both housings, Bov and ebc

Does he have good deals on a EFR 7163 Twin scroll?

Aight, y'all the best. I should seriously be a subscriber for this website.

No idea, I bought my turbo from them last year, and asked if they can price match thmotorsports $1260 and they did and shipped my turbo next day,
Where thmotorsports i was waiting 2 months with no ship date in sight.

I also asked them if they can do the same price for my miata turbo peeps, Gavin said no problem.

So I'd call him and ask if they can do a similar price break on a 7163

I wouldn't. The money obviously doesn't go towards a "Make the forums work consistently" fund.

Gtx2867r is $1200 with turbine housing, iirc.

Why are you giving him false hope

All this talk about supercores, if anyone is buying a 62/6758 I have a t25 0.64A/R turbine housing for sale.

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oh god, you said "hood exit"

contact Kraken on facebook messenger, he is fairly responsive there.

I think manifold only is around $450-500

TSE is the best of the best as far as T25 EFR manifolds/kits go. Kraken a close second.
TSE will be spendy for a manifold only.

ebay tacotaco wont work with an EFR, the compressor housing will hit the cars side rail

Don't do a hood exit unless you've already lost 80% of your brain cells due to vaping the phattest of clouds.

Keepin the retardedness set to 11.


nobody on here will condone a hood exit.

Dunno how I missed subscribing to this thread. :drama:

If hood-exits make a build "truly your own" then you have pretty low standards. Simply adding to the many crap sounding cars in Houston.

@Savington , thank you for designing your manifold so we can have a decent length hood exit. When will your hood exit exhaust be available?

Right after the forums work properly

Pfft, like we don't have a fix for that. :fael:

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Here is your 11:1 with turbo build that all the naysayers in this thread are drooling over.
https://www.miataturbo.net/diy-turbo...ase-car-92683/

That motor died a horrible death. There's quite a few updates missing between the OP and the current post updated yesterday or today.

We're just haters, though.

Is there a point here?

no one said that 11:1 pistons cant ever be used.

OP said he will primarily run the car on 93 gas, with maybe some e85 here and there. in which case 11:1 pistons is not the correct choice.

Point is that he should go with his original build plan and enjoy how much fun that would be. 11:1 and low boost would be a blast and survive just fine on 93.

Point is, you are wrong. 11:1 boosted on 93 is stupid, plain and simple.

There's one arena where that could be acceptable: DI cars.

Explain to me how I am wrong and explain how my 12.5:1 motorcycle runs amazing for 40,xxx miles on 87 octane at 2500+ foot elevation?

:facepalm:

Which motorcycle uses a Mazda B-series architecture 4-cylinder engine?

Focus RS: 9.37:1
Evo X: 9:1
Golf R: 9.6:1
STI: 8.2:1

you should start selling your idea man you've obviously figured something major out here.

Lol at streetbike comparison. Off the shelf OEM engine making 200 hp per liter.

The exhaust exit location on an outboard boat engine is more technically advanced than a miata engine.

All engines must have identical design properties in your world. Why doesn't my Miata make power at 14,000 rpm reliably like my motorcycle did? Surely they are both engines! Maybe I am just a fool for not trying to rev my Miata so high. I haven't tried it and it just might work.

I'm going to recommend you do some reading on internal combustion engine design and theory of operation before making recommendations to the other noobs. Study things like rod ratio, undersquare versus oversquare engine designs, quench, tumble and swirl, combustion chamber design, the effects of cam duration and overlap on dynamic compression ratio, and definitely forced induction detonation characteristics relating to mechanical compression ratios. Report back your findings for us.

No balls, he won't. :rofl:

Ew that sounds hard though.

Oh it is, baby. Rock hard.

How about maybe just the difference between static compression ratio and dynamic compression ratio?

It would be nice but it's not necessary if 208 learns anything or not as long as he's not spouting antithetical bullshit to trusting and unsuspecting noobs.

Yeah but with such low compression how do you overfill your pistons?

I use smaller air so I can fit more inside.

:rofl::rofl::rofl:

Suck Squeeze Bang Blow. That's right isn't it?

No wait, that was saturday night. :naughty:

https://cimg5.ibsrv.net/gimg/www.mia...0454ea8672.png
bonk

Do you have a book recommendation that covers these topics on a beginners level?

It would be cheaper to Google each of those terms and read a little from multiple sources for free. Several explanations of the same idea sometimes help perception more than a single description.

I started with automotive textbooks for theory of operation of all components and then transitioned into performance enhancing technologies like combustion chamber design, camshaft design (including all of the "Camshaft 101" lessons from major camshaft manufacturers), intake runner tuning, and all of the other terms mentioned in my other post. Then I transitioned into forced induction theory and operation. I would recommend the book when you reach that point, but not before then. Ideas build on each other.

I've been at it for awhile but still have a lot to learn. Technology and understanding keep progressing. But our little engines were designed in the 1980's using technology that was old and not cutting edge at that time. Mazda is small and quite poor compared to Honda, Toyota, and Nissan. They used existing architecture out of necessity.

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Here i am quoting myself in the hopes that i will be able to see my reply so i can read the rest of the thread.

@Robb M. it's happening again.

are you running out of RAM? I can't seem to replicate. Can you please remind me your browser/device setup?

HP Elitebook with an i7, 512mb ssd, 32gb of ram, nvidia quadro m2000 2gb.

Issue randomly happens on Chrome and Firefox both. Just went 3-4 days without it happening, i've had it happen twice this morning already.

Our tech guys were unable to replicate, I haven't yet either. It's def not your machine based on the above. Not even sure what info I could ask you to try and collect to help isolate this. All I can think is a rogue ad unit. I'm certain you have related threads and infinite scroll turned off?

I can't intentionally replicate it either, unfortunately. Yes those dumpster fires have been eradicated from my personal preferences.

i guess screenshot if possible and let’s look for a common ad? not much of a solution.

I think its time to upgrade that solid state drive :eggplant:

OP, I would install a ral clutch first time 'round. unless you like to pull engines. I dont like to, so thats my thought.

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I don't have ads. There's a screenshot of what happens in the Front Desk thread when i first notified you of this happening.

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Confirmed for troll account.

sell the unused stock clutch. save labor AND money. unless of course, more complicated and more expensive is what you are after.

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