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Old 07-31-2014, 03:06 AM   #1
chp
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Default Mazdaspeed miata (MX5 SE) Turbo kit

Hey guys,

New to the forum here, and I'm looking to pick at some of your brains for advice. I've got a 2001 MX5 with VVT and I'm looking to buy a second hand Mazdaspeed (or in Australia; MX5 SE) factory turbo kit which includes the following:
- Turbo
- Manifold
- Dump pipe
- Intake
- AFM
- Original SE oil & water lines (factory)
- 2.5 inch mandrel bend full exhaust

and if i was to pick up an intercooler + piping what more would be required in order to get it working? I'm guessing you cant run it with the stock ecu on just stock wastegate pressure or can I?

What other expenses would I run into to get this working? gaskets etc.

Also, is there already fittings for oil and water feeds to the turbo? or will i have to drill into the sump etc?

Sorry for the dumb questions, I haven't had any experience with turbo cars before, so if anyone could help it would be muchly appreciated.

Cheers

Last edited by chp; 07-31-2014 at 03:24 AM.
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Old 07-31-2014, 04:23 AM   #2
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As far as workable intercooler piping to fit the msm setup, you could probably source an oem setup off the mazda-speed forum. Or I know Corksport used to sell hardpipe replacement kits, they may still have some in stock.

In my honest opinion, unless your getting it super cheap. It's not worth your time. Your gonna need some sort of ecu to run it, likely megasquirt.

Your going to need to drill/tap lines on your current motor for the turbo. You'll also want bigger injectors than stock, on my msm i ran 321cc injectors over the stock 265cc.

If your investing more then say $1500 into this, you mineswell source your own setup and do it right over dealing with the restrictive stock msm setup.
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Old 07-31-2014, 09:45 AM   #3
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I just finished my MSM install on my 96 1.8l and am happy with it. I will say that unless you get the parts for a steal I would recommend getting one of the kits instead. The MSM turbo has its limitations.

If you have some fabricating skills and tools I would recommend making your own intercooler piping. The factory intercooler piping has been known to have issues with connectors blowing off and leaking at higher boost levels. I beleive BEGI and FM sell upgraded kits that work much better. I am cheap so I fabbed almost all of it. I started with an older BEGI intercooler kit intended for a sidemount Garrett, but had to rework the hot side to fit the MSM turbo.

The OEM oil drain will more than likely not work unless you get an MSM oil pan. Make sure you get the OEM waterpump inlet pipe as well. The factory non turbo one interferes with the compressor housing.

Check mazda-speed.com for info on doing this swap. They have some info on doing this swap. Your install might be easier going into an NB. Definitely need aftermarket ECU. I am running MS2.
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Old 07-31-2014, 11:58 AM   #4
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To clarify for relte, I don't think you need the MSM water pump inlet, but the hardline that goes from the heater core into the inlet has the hose barb for the turbo's water return. Other than that, the oil and water feed come from these bolts on the block:



Some of the later engines do not have these drilled, tapped, and plugged from the factory. If you do not have these, you will need to source oil from the other side of the block. Either a sandwich plate or a T off the oil pressure sensor*. And yes, the oil drain will not work without a MSM oil pan.

After all the neat packaging of the MSM is gone since you've sourced all your own feed/drain locations as mentioned above, there's really no benefit to the stock setup. I'd make your own with a larger turbo and something like an FM log manifold.

And Mazduh, as far as I know the purple MSM injectors were identical to the purple NB2 265cc injectors.
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Old 07-31-2014, 01:25 PM   #5
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Wow, you guys are being nice today.
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Old 07-31-2014, 01:50 PM   #6
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Check out the 6th picture down. It shows the interference withe the non-turbo waterpump inlet and how the MSM inlet is different. I ended up selling the MSM one and made my own pump inlet due to special re-route. Curly is right, it will not be a nice OEM packaged swap that installs easily. The oil and coolant in and outs need custom attention. If you do decide to go through with it, PM me and I will send you the infor on all the thread sizes for the oil, coolant and other fittings.

https://www.miataturbo.net/build-thr...ntually-57591/

I need to update my build thread since I got the turbo in and working.

Again, if its not cheap or free, keep looking for a deal on a used kit with a proper turbo. I am already dreaming about something better. You can get the MSM turbo modified/upgraded, but at the cost of going to something else. Luckily I made my exhaust and intercooler so that minimal modification would be needed if I ran a different manifold and turbo so it won't be the end of the world if I swap to something else later on.
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Old 07-31-2014, 10:07 PM   #7
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Thanks for the help guys, the reason why I'm using the factory system is because its illegal for me to fit any other system here in Australia with my license. I currently have my provisional drivers license which does not allow performance mods, but I could get away with the factory system only as fits into the list of low powered vehicles that I am allowed to drive. If this wasnt the case then I wouldnt go this route. I'm getting the above kit for $1000 and found an intercooler + piping for $25 so all I need is the fittings for oil + water supply/return, ecu and waterpump inlet?

Cheers
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