EWG build question

[Davsetz]

Hey Ive read alot of issues with boost creep on here with internal wastegates. So my question is could converting to a 4 bolt downpipe with a seperate screamer pipe off the manifold be possible or would clearance/heat/other issues come into play. If this has already been asked sorry my failed searching couldnt find anything.

Thanks
Kyle

[theschrum]

Plenty of EWG folks here including myself. Check through the Big Turbo Build section, I searched Tial under that forum and 85 threads popped up. Most of those are EWG.

So you are considering a T3/T4 turbo? V-band is the way to go, not 4-bolt.

[pinkcheese]

Originally Posted by theschrum Plenty of EWG folks here including myself. Check through the Big Turbo Build section, I searched Tial under that forum and 85 threads popped up. Most of those are EWG. So you are considering a T3/T4 turbo? V-band is the way to go, not 4-bolt.

Second this, The 4 bolt flanges are such a bitch to get to seal and cause more complications than they are worth. do it right in the beginning and V-band it.

[Davsetz]

Thanks for the help, I'll definately look into V band. Ive been looking at a GT35 T3 honestly and a 2871 has been on my radar too it seems more jack of all trades like.

[helmetface]

Originally Posted by Davsetz Thanks for the help, I'll definately look into V band. Ive been looking at a GT35 T3 honestly and a 2871 has been on my radar too it seems more jack of all trades like.

Gt35 and a 2871 are pretty far apart from one another...hell opposite ends of the BT spectrum.

I think you need to figure out what you want in the car before worrying about boost creep.

[rfinkle2]

You could always port the wastegate as well.

35r is a BIG turbo.

[uncorked11]

I would def echo the statements along the lines of deciding on what your overall goal is, plan for it and gather everything before starting, research will be your best friend if not going with a "drop in Turbo".

[Davsetz]

Thanks for the quick inputs. My research has only led me to fight between those two. I like the 2871 it has plenty of power and versatility as to what I have read. I like the 35 because come on now its a monster. I will probably get the 2871 in the end. I cant really find anything justifying a 35 except ego which is piss poor decision making to me and sounds like a boom waiting to happen.

[anavrinIV]

you haven't even considered a 3071 or 3076? either one is a good in between, the 3071 being a faster spooling turbo yadda yadda.

I agree that there's too much difference between a 2871 and 35r to be considering both. And you should be realistic about what it will take to make that 35r worth the extra work

[Davsetz]

Well the application is for track and autocross with occasional drag. Which I'm pretty sure all four setups would be able to accomplish with the right money. Im open to any one of them. I thought of the 35 and I know I'm going to need to build bottom end to even remotely use it. The 30 series seems legit I would take one. The 2871 seems like I could pull the most power from without having to go berserk. But if Im wrong tell me.
I know this much Im following the BT basics thread, reading through everyones builds and lining up parts and looking for a protuner nearby Af"Cannon"stan. Im open to all input I was just wondering what people were doing to go EWG and how they handling the downpipe situation. I am willing to admit my noobliness to this car.

[anavrinIV]

Originally Posted by Davsetz Well the application is for track and autocross with occasional drag. Which I'm pretty sure all four setups would be able to accomplish with the right money. Im open to any one of them. I thought of the 35 and I know I'm going to need to build bottom end to even remotely use it. The 30 series seems legit I would take one. The 2871 seems like I could pull the most power from without having to go berserk. But if Im wrong tell me. I know this much Im following the BT basics thread, reading through everyones builds and lining up parts and looking for a protuner nearby Af"Cannon"stan. Im open to all input I was just wondering what people were doing to go EWG and how they handling the downpipe situation. I am willing to admit my noobliness to this car.

a 35r is auto-x and road racing megafail on this car, it's just too big. for drag racing where you're just going full bore on it, the bigger the better (to a point). Also, building the motor is going to be more "necessary" on a smaller BT because of the low end torque, which is what grenades the disi's.

before you do anything rash, read up on all the available turbos. A 3071 is common because it's a great in between...it spools early enough to make very usable power, and will easily outflow what the injectors can handle. once you get into 3076 territory you're looking at meth fueling or 5th port to take advantage of the turbo size, and with 35r that becomes even more drastic.

I'm not going to tell you which one to go with because that's up to you, but I think you should spend a lot of time reading first. check out the perm section on 5th port fueling, and read through lots of the gearheads' threads on tuning these turbos to get everything they have to offer.

In the end your usage should dictate which turbo to get, but if you're really looking at doing auto-x then that one should be your limiting factor, and for that I'd go no larger than a 3071.

[Davsetz]

Awesome. Thanks for all the feedback. Im definately going to do more research now.

[captain slow]

People were unbelievably nice to you in this thread. The donation definitely saved you.

Honestly though, it sounds like you've done little research if any. This wont get you far here.

There's ewg turbos that don't require a new mani. Look at those yet? Who's gonna make the vband downpipe? Have you thought about the manifold and flange options out there for our car? There's not a ton. You got some serious questions to ask yourself and lots of research to do. Then come back with a plan and we can critique it.

[Davsetz]

ATP makes a vband down pipe that comes with a 5 point adapter. I have looked at the EWG 3071 adapter in hopes to save some cash on buying a new down pipe and manifold after this start of this thread. Before I couldnt find anything except for IWG and making a custom manifold and rigging an IWG by welding it closed in the builds. Heres my thing Im not dedicating to one set pattern here. I know I know nothing about big turbos and until I build it I wont know anything. One thing I do know is apparently I got this car in it golden age of new stuff. From all the stories I read on here with lenny's build and reading what people see effects wise from different parts. Im taking those ordeals into account before I do anything. But to suffice curiousity out of arguements sake here is the parts I have lined up so far.

Grim Speed MBC
Forge FMIC (cheaper than the Full race and the same setup)
CPE NVISCID 4"inlet or SURE Full3 Aeros 4" (upgrade the Cobb SRI and TIH)
JBR Motor Mounts Set/80 Duro to pin it down (upgrade the 70 torque RMM I have)
Whiteline Anti Lift Kit
Auto Tech HPFP (This is a pre built on car. Im just changing this for peace of mind because Im not sure if its been swapped. AP says 1870 at WOT)
Forge BPV with tuning kit
SURE Halos
Steedspeed Manifold
*Possible swap from a Cobb down pipe to a Vband ATP after the suggestion from Theschrum
Tial EWG 44mm or 38mm EWG

The only things on the list Ive been swaying on is how much power do I want to push and IF the car could do it with 50K miles on it. That and I was considering turbos other then Garrett after reading about the various oil line destructions and how people were going about the boost creep. Also because my 3 day fail at searching and googling and typing in fourteen different re worded sentences of how to get an EWG on Mazdaspeed 3
from Mazdaspeed 3 EWG build to Mazdaspeed 3 4 bolt downpipe. Ive got as long as I want here to put it together.
/retract fangs

[86AmishMs3]

Just get iwg 3071, port the iwg...tune and be happy that you saved money by buying only what was needed.