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Old 07-24-2015, 04:09 PM   #1
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Default Twincharged thread (B6 haters aware!!)

A friend of mine was twincharging his miata with... guess what?
hot side mp62 (slk 200) and a GT30 dual bb turbo
long runner manifold (40mm ID), straight 3" exhaust without silencer and cat, and aem full standalone with his own wiring, sequential cops (bmw M3 probably) and electric power steering (a/c and p/s removed).

Now it's at (excluding wiring) the final stage, I'm uber-excited!
It will be an instaboost running probably allofit at around 2.6 bar peak
Well, this is the target.

Of course, built bottom end: wossner pistons +1mm, eagle rods whith arp bolts, arp head studs, lightened crankshaft and balanced with light flywheel, ported and polished head and tomei camshafts.

It will eventually run a custom intake manifold. The first idea was to run itb's, but he will decide after the first tuning.

Some random pics:





















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Old 07-24-2015, 04:27 PM   #2
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I'll be very interested to see how long that manifold lasts before it cracks.
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Old 07-24-2015, 04:36 PM   #3
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Originally Posted by Ryan_G View Post
I'll be very interested to see how long that manifold lasts before it cracks.
Cmon bro, that's gotta be at least 50 thou wall!
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Old 07-24-2015, 04:37 PM   #4
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I'll be very interested to see how long that manifold lasts before it cracks.
That's the same thing I told him, but it's not his first rodeo, I'm sure he will do some bracket to hold down stresses.
It's a work in progress, but the mains are done (manifold, compressor brakets, even the breack in was done while n/a
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Old 07-24-2015, 04:55 PM   #5
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all I can say is, ummm..........it's interesting
lol
VERY interested to see results.
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Old 07-24-2015, 05:47 PM   #6
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<p>cool project.&nbsp;</p><p>Any particular power goal for the build?</p>
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Old 07-24-2015, 06:17 PM   #7
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And where is the hot-side charger going exactly with the turbo sitting there? Please don't tell me out of the hood...
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Old 07-24-2015, 06:41 PM   #8
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Originally Posted by bcrx7 View Post
And where is the hot-side charger going exactly with the turbo sitting there? Please don't tell me out of the hood...
My guess is it's under the turbo if it's going on the hotside. If so he's going to cook the crap out of the SC!

Question: How will this be plumbed? Will it be compound setup? What's the charge cooling setup? What's the goal for the setup?
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Old 07-24-2015, 06:51 PM   #9
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I keep looking at the octopus header and thinking: "faeflora would have wet his pants"
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Old 07-24-2015, 07:08 PM   #10
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Default Twincharged thread (B6 haters aware!!)

With no a/c and no PS I bet the SC is under the turbo.

About 40psi, huh? What transmission?
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Old 07-24-2015, 10:17 PM   #11
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IIRC the MB 62 is a G3

I am thinking the hotside mount is going to wreck havoc on the snout internals. Tell him to order mass quantities of the snout seal from bohemia
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Old 07-25-2015, 10:18 AM   #12
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Yes, the sc in in the same location of the stock a/c compressor
The power goal is 300-ish rwhp with 18 psi I bet.
He want to run allofit with a button (famous allofit switch) but as a daily it will be mostly 18 psi, maybe something less.

6 speed transmission and 3.636 torsen.

Everything will be nicely shielded, even the turbine housing
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Old 07-25-2015, 11:09 AM   #13
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Wow, why go with all that complex setup for 300hp? When you can run high comp pistons a small efr on e85 and have very similar botom end torque and hp? Do you really need 300 ft lbs of torque at 2k rpm?
You can only put so much torque on the 6 speed trany before it breaks 😕
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Old 07-25-2015, 02:10 PM   #14
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Quote:
Originally Posted by HHammerly View Post
Wow, why go with all that complex setup for 300hp? When you can run high comp pistons a small efr on e85 and have very similar botom end torque and hp? Do you really need 300 ft lbs of torque at 2k rpm?
You can only put so much torque on the 6 speed trany before it breaks 😕
Low end torque is nice. But agreed this is way too much complexity for only 300whp. I'm optimistic he's going to run it at 400whp or so.

OP- How will it be plumbed? Compounded? How will the intercooling be done?
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Old 07-25-2015, 02:15 PM   #15
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well he said he's gonna also run ALLOFIT, so not just 300whp.
But I agree, the priorities on this seem funny: he's building an insane manifold and will need to do all sorts of crazy plumbing, yet using a B6. He's going to do a ton of heat shielding, yet using a stock junky radiator. Just seems like he has ADHD
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Old 07-25-2015, 02:19 PM   #16
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Quote:
Originally Posted by 18psi View Post
well he said he's gonna also run ALLOFIT, so not just 300whp.
But I agree, the priorities on this seem funny: he's building an insane manifold and will need to do all sorts of crazy plumbing, yet using a B6. He's going to do a ton of heat shielding, yet using a stock junky radiator. Just seems like he has ADHD
I'm just not a fan of building a badass setup and then "turn it down to XX PSI" for daily driving. The way I see it, if I'm going to invest all the of the time/money to build a hot nasty setup, I'm going to enjoy the car at that performance level every time I drive it. That's what I meant by my post, it seems dumb to build something this complex and then DD it at 300whp when it's designed for a lot more.
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Old 07-25-2015, 02:21 PM   #17
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Setups like this rarely ever even run, let alone get daily driven reliably.
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Old 07-25-2015, 02:26 PM   #18
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Quote:
Originally Posted by 18psi View Post
Setups like this rarely ever even run, let alone get daily driven reliably.
Sad, but true. (speaking from my own lack-of-success attempting to do a compound setup)

Still I wish the OP luck. If he gets the charge cooling right and compounds it, this could be fun. I'd worry about cooking that SC though. I literally just mailed my whipple to be repaired (likely cause of failure being too much heat) so if he's going to shield the blower, well, it's going to be a pain/require a lot of shielding, more than you might think. I'm actually installing a duct to get cool air to the SC on my setup as well as the SC temps were too high even at cruise.

I guess a good question is, what is this being built for? DD reliable? Race car only? I always assume DD reliable as that's always been my goal for my miata.
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Old 07-25-2015, 02:47 PM   #19
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Interested, good luck!
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Old 07-25-2015, 04:35 PM   #20
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Hi everybody! I'm DNA54 friend! sorry for my bad speaking, my english is very rusty!
Yes, I know, this project is so folish and crazy, and it has 99,9% of possibilities to fail.
but I like challenges and to do somethings not so simple or already see on this car. I'm tryng to reevocate an old italian exotic car, the Lancia Delta s4. I hope I will success

this is the scheme we are trying to emulate:

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