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Old 02-03-2015, 05:06 PM   #1
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Default Just bought a turbo miata, previous owner ran too much power.

Hello everyone, I purchased a turbo Miata that was put into storage because of too much power causing the engine to have cylinder rattle/knocking.
The previous owner claims to have been producing 372 hp at 16psi on stock engine, which i am skeptical about hearing. He was also not using an air filter into the turbo. After taking it to my garage I found that something must have gotten into the turbo because the wheel was a bit messed up, which leads me to think that something also got into the engine which might be why there is cylinder rattle.


T70 turbo
305 Injectors
Walbro 190
Greddy EMB (with no usb/serial communication cable)
6 puck clutch
OBX manifold
Ebay intercooler

So my question is, is it worth fixing?
Also note that I do want this to be done right, so I will be getting a new downpipe, hopefully MS if I can save up, and intake will definitely be fixed.
I haven't heard much about T70 turbo on Miatas but it does seem quite large.
It does run, enough to get on and off a trailer. I was thinking about just rebuilding the turbo and the engine so it runs and then tune it way down to 8 psi. I also have pictures from when I looked at it.


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Old 02-03-2015, 05:11 PM   #2
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What did you pay for this?
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Old 02-03-2015, 05:16 PM   #3
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I seriously hope he paid no more than 5 dollars

Oh and OP, I'm completely serious when I say that this car would have MAYBE made 172whp.....maybe
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Old 02-03-2015, 05:17 PM   #4
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RUN run away fast!!!
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Old 02-03-2015, 05:25 PM   #5
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Pictures like that make me really appreciate what I have under my hood.
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Old 02-03-2015, 05:31 PM   #6
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A hose going from the manifold to your anus would be a better quality turbo setup than that

Eat some chipotle for that "scramble boost" function
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Old 02-03-2015, 05:36 PM   #7
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Anyone have any clues as to what that thing is going from the vacuum nipple on the intake manifold to what appears to be an electrical connector going OVER the firewall?
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Old 02-03-2015, 05:40 PM   #8
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Yes i know it is a very messy setup and probably did not run well, but it does start and idle fine, as it sits, with a filter on. Non of these are helpful to me as I just want to make this run, mostly for fun. It's not pretty I know.
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Old 02-03-2015, 05:41 PM   #9
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Hmmm. It never made 372whp.

My favorite part is the manifold pressure reference wire going over the firewall.
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Old 02-03-2015, 05:41 PM   #10
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^^ I like the oil feed going over top of the engine. haha

lolol. Poor car...

That thing MAYBE made 200hp. Even that is doubtful.

Hope you didn't pay very much for it. Best of luck.
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Old 02-03-2015, 05:49 PM   #11
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Quote:
Originally Posted by sixshooter View Post
Hmmm. It never made 372whp.

My favorite part is the manifold pressure reference wire going over the firewall.
Cowl mounted boost gauge?
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Old 02-03-2015, 05:51 PM   #12
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Quote:
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Cowl mounted boost gauge?
Yep
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Old 02-03-2015, 05:51 PM   #13
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Wait actually?

Pics now.
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Old 02-03-2015, 05:53 PM   #14
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Quote:
Originally Posted by JHax View Post
Yes i know it is a very messy setup and probably did not run well, but it does start and idle fine, as it sits, with a filter on. Non of these are helpful to me as I just want to make this run, mostly for fun. It's not pretty I know.
You're still not understanding what we're saying.
Which is probably why you were dumb enough to buy that tub of crap that is literally worth no more than scrap metal.

You won't get the car to run reliably without replacing like 90% of all that stuff and dumping weeks maybe months of work undoing all the retardation done to that poor car, and spend the equivalent of a proper miata and proper setup. It is so much more than "messy", it is not even in the same realm.
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Old 02-03-2015, 05:58 PM   #15
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Quote:
Originally Posted by 18psi View Post
You're still not understanding what we're saying.
Which is probably why you were dumb enough to buy that tub of crap that is literally worth no more than scrap metal.

You won't get the car to run reliably without replacing like 90% of all that stuff and dumping weeks maybe months of work undoing all the retardation done to that poor car, and spend the equivalent of a proper miata and proper setup. It is so much more than "messy", it is not even in the same realm.
I see what you're saying. Thanks for the feedback.
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Old 02-03-2015, 05:59 PM   #16
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You could probably salvage the IC piping, bov, and IC. Other then that nothing there really warrants keeping.

Last edited by shuiend; 02-04-2015 at 08:27 AM.
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Old 02-03-2015, 06:02 PM   #17
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Kind of a picture tutorial of things not to do.

I like the evidence that the charge pipes once went over the radiator. Not that there is anything wrong with over-the-top, but shows this is likely the second go around.

What does the rest of the car look like? Possibly replace the engine and have a car?
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Old 02-03-2015, 06:12 PM   #18
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Well, it's possibly a good start for a budget Exocet right?
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Old 02-03-2015, 06:15 PM   #19
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Last edited by Girz0r; 02-17-2015 at 01:35 PM.
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Old 02-03-2015, 06:19 PM   #20
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Please tell me there is a MT.net sticker on there somewhere...

Start checking your local pick-and-pulls for miatas. Get a new motor and whatever else needs replacing.
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