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post #11 of 159 (permalink) Old 10-08-2015, 07:28 PM Thread Starter
chris_top_her
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I'm currently looking for someone to fab me a simple no WG manifold pretty much similar to this I'm 90% certain if this exact disgn had the 2.5 exhaust flange it would work fitment wise. I sent a mail to ovtuned. A local on a mazda fb page who said he makes manifolds seemed uninterested when I actually messaged him.


mz 2.0/2.3 mani (also no wg)
Ford Focus 2 3 Mazda 3 2 0 2 3 T25 IHI Turbo Cast Manifold Exhaust | eBay


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Last edited by chris_top_her; 10-08-2015 at 07:31 PM.
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post #12 of 159 (permalink) Old 10-09-2015, 02:31 AM
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[QUOTE=chris_top_her;1454642]


That V-band flange cast/ machine work looks like crap.

20 bux says it cracks there after a few heat cycles

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post #13 of 159 (permalink) Old 10-09-2015, 02:52 AM Thread Starter
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Not worried about it. It's mainly for fitting and testing. The inside of that area is fine. For that little rough spot to be cleared that band would have to be machined down even more, meaning more material removed. I work at a crematory. Our machine(s) has plenty of metal/brick parts that are heated 2000+f for hours then cooled and heated over and over. With fluids getting on them sometimes too. From my experience I would be surprised if that cracked.


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post #14 of 159 (permalink) Old 10-10-2015, 05:03 AM Thread Starter
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Quote:
Originally Posted by Brandon@CorkSport View Post
I haven't looked at the room in a 5 yet, but in the 3 at least after the cat there isn't room to mount it on the manifold. Also where the cat starts and ends it is not perfectly round tubing. You're almost better off using some sort of aftermarket Tri-Y, and welding the flange at the end of it. It would almost be easier to run a remote setup.

The amount of low-end tq that you may lose going to a simple manifold would be negligible. You probably won't notice too much then you will hit boost.
I did not know what you meant by remote set up but I just happened to come across it on YouTube looking at other stuff.. I think that will be the route I want to go.. even better that I have extra space thanks to the AWD tunnel..


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post #15 of 159 (permalink) Old 10-12-2015, 05:55 PM
Brandon@CorkSport
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Do it!
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post #16 of 159 (permalink) Old 10-12-2015, 06:06 PM
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You might be better off squeezing a td04h in there from a subaru. They are plentiful and easy to come by.
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post #17 of 159 (permalink) Old 10-12-2015, 08:37 PM Thread Starter
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Yea, I'm going to do a remote set up. Thanks @Brandon@CorkSport , I had never heard of that until you mentioned it. Seems way more viable, cost effective (no turbo manifold needed) and safe (lower temp and low boost anyway) for this engine.
C&p from my pos ton mz247 I made today.
A remote turbo set up is one in which the turbocharger is mounted somewhere down the exhaust stream, rather than on the exhaust manifold. Some benefits that are attractive to me:

No turbo manifold is needed - I found that even though there is space behind the engine for a turbo (specially with a shorter manifold), no one has a head flange for the 2.5 sky and you'd be paying to have a one off manifold built (unless you build your own). Even still, it's a cramped space and most turbos will be too large to get behind the engine without partial disassembly; a hassle. Also frees up the engine bay of pipes bent everywhere. A big $$$ saver either way.

Cooler air charge - Because the turbo is further down the exhaust stream, turbo temperatures are lower (up to 500f on some applications) meaning less wear on the turbo/oil, greater effectiveness of the intercooler, all around lower temperatures and better tuning potential.

Some people complain about turbo lag on remotes, some don't (but then again people get turbo lag with a front mount turbo too). I dont give a shit about a half a second of turbo lag I give a shit that I'm getting boost lol. The oil line will need to be run further with the addition of a scavenger pump for return; not a big deal for the cx-5 as the transmission tunnel/space above the underbody panels provides plenty of routing space or space for a self contained oil system for the turbo (that will clear the yoke for the rear diff). The space on the rear axle is ample thanks to it being designed to accommodate a hitch.
Ovtune offers boost tuning and the only part that will need to be upgraded on the block is the OEM map sensor. It caps and 1.8 PSI so a better one is needed. An oem Mazdaspeed or bosch type will work just fine. Actually corksport just released and 3 bar sensor.


Basically since the majority of the work on this just exhaust style piping, with the exception of the oil return or self contained oil, once I find a shop that will give me a good price on sizing and welding up the tubing I should be good to go. It will have to move quickly from there then I will pay for boost tuning (my tune right now is only for NA) from OVtuned (or drive with the WG fully open/charger disconnected or no exhaust until I get a tune lol. I don't believe I will need a large IC, the front of the cx-5 is already sized for an intercooler (diesel)I and If I wanted I may be able to fir a small one under the rear bumper.

Quote:
Originally Posted by gregersonke View Post
You might be better off squeezing a td04h in there from a subaru. They are plentiful and easy to come by.
Yea, if physical size becomes an issue that would be a good alternative. I paid $175 for this one, I'm sure I can resell it for 125 or trade it for something like an IC.

I found some 04's for less than $ 200, one is designed more standard type, cx-7 direct replacement http://www.ebay.com/itm/K04-1-8T-1-8...624451&vxp=mtr
and another one is for an audi replacement, but it has a slim design where it doesn't bulge much.. that would actually be ideal for this type of installation.
http://www.ebay.com/itm/96-03-A4-PAS...c82a74&vxp=mtr


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Last edited by chris_top_her; 10-12-2015 at 08:49 PM.
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post #18 of 159 (permalink) Old 10-12-2015, 09:53 PM Thread Starter
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Guys, is the 4 bolt rectangular flange the outlet or inlet for this (OEM) mazdspeed TMIC??



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post #19 of 159 (permalink) Old 10-13-2015, 02:09 AM Thread Starter
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Good places to tap vaccum for bov? The wastegate is internal so I will only need external vacuum for bov


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post #20 of 159 (permalink) Old 10-13-2015, 01:22 PM
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Quote:
Originally Posted by chris_top_her View Post
Guys, is the 4 bolt rectangular flange the outlet or inlet for this (OEM) mazdspeed TMIC??

Outlet, the square goes to a cast pieces that goes directly to the TB.
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