DIY Turbo Discussion greddy on a 1.8? homebrew kit?

old volvo turbo in a miata?

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Old 10-01-2008, 06:00 PM
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Default old volvo turbo in a miata?

there's a free volvo turbo up for grabs on my local CL. i'm wondering if it's worth trying to apply it to my 91? i'm thinking it should be pretty low boost, so i'm wondering how much (if any?) fuel management would be needed, and what i'd need for parts. i'd probably get the cheapo OBX manifold and downpipe from eBay. does a turbo like this need to be intercooled, or could i go without?

so 150 bucks for manifold and downpipe and free turbo... could i really get a (mildly) successful turbo set up?


:n oob:
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Old 10-01-2008, 06:28 PM
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Go to the NEWB section of the forum and read a few threads from there. It's on the main page, just scroll down. You'll quickly find out that newbs that fail to search and learn on their own don't last long here. Read all the faqs and stickies. See you in a few weeks.
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Old 10-01-2008, 07:59 PM
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sorry about that, i should've known better. i'll go do that. mods, please delete or lock this thread. it's of no use to anybody until i learn more about turbos.

thank you
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Old 10-01-2008, 08:31 PM
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Aww, look a humble noob! skiboy, I'm sure after doing some learnding, you will be welcome here with open arms. (just don't drop the soap)
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Old 10-01-2008, 10:47 PM
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Originally Posted by skiboyjake
i'd probably get the cheapo OBX manifold and downpipe from eBay. does a turbo like this need to be intercooled, or could i go without?

I'd get the cheap *** cast manifold, and get DP made.

under 6psi or so shouldn't require an intercooler...
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Old 10-01-2008, 11:05 PM
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Free! I would get it.
Good Luck!
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Old 10-02-2008, 02:03 AM
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free t3 + tacotaco mani+ diy downpipe and crossover tube = cheap fun. dont forget to add fuel.
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Old 10-02-2008, 08:18 AM
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Skiboyjake... where are you located? I think I saw the same turbo.

Joel
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Old 10-02-2008, 10:24 AM
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Originally Posted by Haverty1
but you guys are trying to tell this dude to get a t3 turbo, and put it on a t25 manifold. Anyone else see the problem here?
Is that what we are telling him?

volvo garretts are also internally gated to 9.6 psi. theres a lot more to it then just "bolting it on".



Originally Posted by Haverty1
hate for this to be my first post...
Because it highlights your overwhelming ignorance?
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Old 10-02-2008, 10:26 AM
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That cheap-*** cast manifold is a t3 flange.

That said, T3s weren't the only turbo to come on Volvos.

Nobody mentioned anything about "just bolting it on".
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Old 10-02-2008, 10:33 AM
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Originally Posted by Haverty
volvo garretts are also internally gated to 9.6 psi. theres a lot more to it then just "bolting it on".
Dude, just go away or something ... all one would need to adjust the boost is a manual boost controller of some sort. That manifold will work just fine, theres a few peeps running that one w/o problems. Just gotta stay away from the tubular manifolds.
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Old 10-02-2008, 10:43 AM
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you stupid ****. the OBX manifold is a t3 flange as well. Bye.
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Old 10-02-2008, 11:00 AM
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I'm positive these things used to be sold as T3 flange's a few years ago. Regardless, it was the OP himself that suggest a OBX manifold, where we said use the ilovetacotaco manifold in it's stead.

get over yourself dude, you really dont know **** about anything man.
sorry I don't keep up with the latest eBay manifold offerings. What im trying to figure out is how i ran my volvo t3 wastegate at 6psi, when of course it's a 9.6psi wastegate.
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Old 10-02-2008, 11:35 AM
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Volvo had multiple turbo offerings per model. In the dealer documentation they mention "low pressure" and "high pressure" turbo options. That applies to the older model line up, (up to the mid 90s) where I would assume a free turbo would come from. So the older ones (T3's, .69 A/R 45 trim) could very well have had two different wastegate setups....
--Alex
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Old 10-02-2008, 02:06 PM
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Originally Posted by Haverty
I saw "obx manifold" written a few times...
right- OP said that, Brainy offered up the cast which is t3.

And most volvo oem turbos are t3.
Most- not all. And which does the OP have?

You can pick up used lower psi wg cans on for cheap on eBay.

You'd be better off having the facts vs. shooting down all the suggestions as wrong.

None of this complicated.
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Old 10-02-2008, 02:50 PM
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Most of use weren't privy to all the background information you acquired before you started posting here.

http://forum.miata.net/vb/showthread.php?t=301657


Regardless of the flange, I don't believe many of our members here would recommend an OBX or SSAutoChrome manifold. I was always under the impression the OBX was a T3, as I was looking at a cheap replacement when my first log manifold cracked.

As regards the fueling and the rest, also I don't believe many of our members wanted to sit here and writeup the exact parts steps the OP should take either.

The only reason you posted in here was you were trying to make us look stupid. The OP was told to go read up before continuing. I gave him a freebie and simply told him to look into the cast manifold, then another member agreed. Only then did you come in at this post trying to stir muck; your first post have you. Who knows how the this discussion would have panned out if you hadn't stepped in.
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Old 10-02-2008, 03:26 PM
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Show us where akaryrye said the mbc would lower boost pressure. He did say it would control it.

Show us where akaryrye said it would "bolt up". He said "tacotaco manifold". Add to that a free t3, DIY downpipe and fuel. Why won't that work? It will bolt up. T3 will bolt to a t3 manifold. DIY will bolt to a t3 turbo and exhaust... And fuel is a requisite. He even suggests avoiding the tubular OBX type manis.

My point is, you're shooting down suggestions that are legit. You'd be better off replying to the OP with your own recommendation vs. knocking all the other suggestions.
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Old 10-02-2008, 03:26 PM
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I wonder how many brain cells I lost reading this
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Old 10-02-2008, 03:29 PM
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that depends, are you in Columbia SC or SA?
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Old 10-02-2008, 03:40 PM
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Originally Posted by haverty
he's not including oil and coolant lines, where to tap those off of, fabrication of an exhaust system to mate with the downpipe (albeit possibly creating a downpipe to mate with it, but it would suck *** and boost spike like crazy), controlling compressor surge, timing retardation, the fittings for the turbo, clamps, hoses, EGR block off, a stronger pcv valve, and whatever other little things I may be forgetting.

Granted he's speaking in generalities, but he's also speaking to a guy who has never done anything with turbo's before, so generalities lead to a false sense of complacency to which the OP can get him self in trouble with.
Which is why before that post was made the OP was advised to go read all the faqs and subsequently said that's what he was doing and asked the thread to be ended. STFU, stop stirring ****...can we /thread yet?
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