Custom Turbo Build (Twin Scrol EFR 6758) - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

kask2_6.0 · 01-10-2016, 07:54 PM

Hey Everyone,

I've been slowly working on this project for quite some time and thought this may interest a few. So right off the bat I'm just going to go ahead and answer the questions I know will be asked.

Why turbo over supercharger?
Cosworth, Edelbrock, and Jackson Racing have really good offerings and I don't think I would be disappointed with any of them. BUT.. I just really like turbos. And living in CA and having this crappy 91 it is a huge benefit to me to be able to vary boost levels depending on fuel using a flex fuel setup. This isn't possible with a SC setup.

Why did I decide to go the custom route rather than just buy a kit?
There are some really good turbo kits already on the market (pTuning, Full Blown, Full-Race, MAP, etc.) however, none of them checked all of the boxes for me. The ptuing setup is close to what I want but not exactly. And in the end I also just wanted to do my own thing. Fill up those rainy days.

What are my goals?
Eventually my car will be track only but for the next couple of years it will still be my DD. Actually, I love driving this car so I am going to DD for as long as possible. In that regard I am trying to build a car capable of being regularly thrashed at the track and reliable enough to DD. Making a car fast is easy. Making it fast while remaining reliable enough to take anything thrown at it is not. Nor is it cheap unfortunately.

Am I going to build the motor?
Not yet. But eventually.

Current status:

kask2_6.0 · 01-10-2016, 07:54 PM

Today's progress:

wise345 · 01-10-2016, 11:19 PM

Subbed interested to see where this goes. Good luck man

xkalelx · 01-11-2016, 07:04 AM

subbed! Very cool!

King Tut · 01-11-2016, 10:30 AM

Well you have me intrigued. What made you decide to go with an internally gated BW EFR? From my research they have shown to be very hard to modulate and control boost levels.

Gear_One_Performance · 01-11-2016, 10:56 AM

We love to see other people using a 3d printer for prototyping, this looks pretty good so far.

DustinS · 01-11-2016, 11:16 AM

Subbed as well.

-Phil · 01-11-2016, 11:51 AM

Very nice, Subbed.

Toyota86.ir · 01-11-2016, 12:34 PM

Nice , efr 7163 is also good

kask2_6.0 · 01-11-2016, 12:50 PM

Quote:

Originally Posted by King Tut

Well you have me intrigued. What made you decide to go with an internally gated BW EFR? From my research they have shown to be very hard to modulate and control boost levels.

I really like the tech in the BW compared to the Garrett (Gamma-Ti wheel, ceramic bearings, stainless housing, etc.). The internal gate in the BW still isn't as good as an external gate but it's pretty damn good compared to any other internal gate. Their wastegate port design really is really awesome and if you want to nerd out on specs, design, and materials this is the turbo you pick lol. And there is absolutely no way I could package an externally gated twin scroll in this location. I plan on using a twin port wastegate actuator so hopefully that will help with the control a bit.

Quote:

Originally Posted by Gear_One_Performance

We love to see other people using a 3d printer for prototyping, this looks pretty good so far.

Just got mine a few weeks ago and I love it so far! I have random plastic parts all over my house now lol. Printed some brake ducts yesterday that bolt in as a direct replacement for the fog lights.

kask2_6.0 · 01-11-2016, 12:52 PM

Quote:

Originally Posted by Toyota86.ir

Nice , efr 7163 is also good

That was at the top of my list with the mixed flow wheel. But I chickened out and went with the smaller one. I did some research but couldn't find really any good data of the 7163 vs 6758 spool times.

MisterSheep · 01-11-2016, 12:56 PM

Subbed, I'm also in the Bay Area. Would definately want to see this when finished.

kch · 01-11-2016, 01:06 PM

Quote:

Originally Posted by kask2_6.0

Intercooler will be replacing the AC condenser. I never use the AC anyways

...must be nice.

Cockatoo · 01-11-2016, 02:07 PM

Look forward to seeing the progress!

01-10-2016, 07:54 PM	#1
kask2_6.0 Senior Member Join Date: Sep 2012 Drives: 13 BRZ Location: San Diego Posts: 724 Thanks: 229 Thanked 512 Times in 256 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	Custom Turbo Build (Twin Scrol EFR 6758) Hey Everyone, I've been slowly working on this project for quite some time and thought this may interest a few. So right off the bat I'm just going to go ahead and answer the questions I know will be asked. Why turbo over supercharger? Cosworth, Edelbrock, and Jackson Racing have really good offerings and I don't think I would be disappointed with any of them. BUT.. I just really like turbos. And living in CA and having this crappy 91 it is a huge benefit to me to be able to vary boost levels depending on fuel using a flex fuel setup. This isn't possible with a SC setup. Why did I decide to go the custom route rather than just buy a kit? There are some really good turbo kits already on the market (pTuning, Full Blown, Full-Race, MAP, etc.) however, none of them checked all of the boxes for me. The ptuing setup is close to what I want but not exactly. And in the end I also just wanted to do my own thing. Fill up those rainy days. What are my goals? Eventually my car will be track only but for the next couple of years it will still be my DD. Actually, I love driving this car so I am going to DD for as long as possible. In that regard I am trying to build a car capable of being regularly thrashed at the track and reliable enough to DD. Making a car fast is easy. Making it fast while remaining reliable enough to take anything thrown at it is not. Nor is it cheap unfortunately. Am I going to build the motor? Not yet. But eventually. Current status: Last edited by kask2_6.0; 04-11-2017 at 04:35 PM.

01-11-2016, 07:04 AM	#4
xkalelx Senior Member Join Date: Feb 2014 Drives: 2013 BRZ black Location: Cincinnati, OH Posts: 394 Thanks: 265 Thanked 284 Times in 113 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	subbed! Very cool! __________________ Unfriendly Garage EFR Turbo BRZ build #UGBRZ #builtmotorcrew #UGBRZ

01-11-2016, 10:30 AM	#5
King Tut NASA SpecE30 Racer Join Date: May 2012 Drives: 2006 Honda S2000 Location: Gulf Breeze, FL Posts: 7,279 Thanks: 607 Thanked 5,759 Times in 3,055 Posts Mentioned: 274 Post(s) Tagged: 10 Thread(s)	Well you have me intrigued. What made you decide to go with an internally gated BW EFR? From my research they have shown to be very hard to modulate and control boost levels. __________________ - King Tut Street/Track Car: 2006 Honda S2000 TT3 \|\| Race Car: 1987 BMW 325is SpecE30 \|\| Tow Vehicle: 2014 RAM 1500 EcoDiesel Sold Cars: 2012 BMW M3 \|\| 2013 Subaru BRZ \|\| 2012 Porsche Cayman R \|\| 2009 Chevrolet Z06 \|\| 2009 BMW M3 \|\| 2004 BMW M3 \|\| 2004 Nissan 350Z

01-11-2016, 11:16 AM	#7
DustinS Senior Member Join Date: Apr 2014 Drives: 2013 Ultramarine FR-S Location: Springfield, MO Posts: 1,950 Thanks: 2,539 Thanked 1,422 Times in 806 Posts Mentioned: 31 Post(s) Tagged: 3 Thread(s)	Subbed as well. __________________

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01-10-2016, 11:19 PM	#3
wise345 Slow I am, boost I must.. Join Date: Dec 2015 Drives: Whiteout 2013 FRS Location: Cleburne TX Posts: 309 Thanks: 66 Thanked 41 Times in 36 Posts Mentioned: 0 Post(s) Tagged: 2 Thread(s)	Subbed interested to see where this goes. Good luck man

01-11-2016, 10:56 AM	#6
Gear_One_Performance Senior Member Join Date: Mar 2015 Drives: 2014 BRZ SCCA STU endurance car Location: West Chester, Pennsylvania Posts: 199 Thanks: 2 Thanked 142 Times in 82 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	We love to see other people using a 3d printer for prototyping, this looks pretty good so far.

01-11-2016, 11:51 AM	#8
-Phil Senior Member Join Date: Nov 2015 Drives: Rb25 neo brz Location: NJ Posts: 210 Thanks: 129 Thanked 292 Times in 98 Posts Mentioned: 16 Post(s) Tagged: 5 Thread(s)	Very nice, Subbed.

01-11-2016, 12:34 PM	#9
Toyota86.ir Mike Tune HKS E85 FD 4.88 Join Date: Jan 2015 Drives: Toyota GT86 AT NA Stage 2 Location: Tehran Posts: 172 Thanks: 213 Thanked 35 Times in 27 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	Nice , efr 7163 is also good

01-11-2016, 02:07 PM	#14
Cockatoo TALLY FT86 Join Date: Mar 2014 Drives: 2014 FR-S Monogram -- SBD Turbo -- Location: Tallahassee, FL Posts: 624 Thanks: 185 Thanked 445 Times in 242 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	Look forward to seeing the progress!

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