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Old 12-01-2014, 06:32 PM   #1
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Default How to boost for 500$ **Redneck style**

Warning: Not for fancy people

Main objective: Have fun for cheap.
Reliability: None.

Here it goes,
I am writing this thread in case anyone would like to boost for cheap! I know people will bash it like crazy because it is a really redneck setup, but I love my setup since it cost me about 1200$ with the car price included

Please note that English is not my native language, so please donít send me a ďhorror grammar warningĒ, I do my best!

Since I have 3 motorcycles to maintain, I wanted to have a winter toy. (The bikes are now stored due to cold weather (Quebec, Canada). So it had to be cheap and fun.

So I bought this sh** box for 700$, and decided to add some power. 312000km on the clock. Just started his life.


Robbed a turbocharger from a SAAB 9-5 2002 or so at the closest scrapyard from my place (50$)


Manifold is made of welded plumber piping, you can buy some at any good hardware store. I kept the flange of the OEM manifold with used gasket. (25$ for piping)


The flange to mate the turbo is just a 1/4" steel plate. Drilled it with a hole saw, 4 holes for the bolts and welded it on the manifold tube.

Looks pretty good for 25$

Downpipe is the saab downpipe, just had to cut the pre-cat and re-weld it with the right angle.

A flexible exhaust pipe connects the downpipe to the stock exhaust line. (20$)

Cat has been removed and replaced by straight pipe. (FREE) easy to find

Intake is made from VW golf intake piping if my memory is good.

Intercooler comes from a Nissan Silvia and piping is an assembly of leftovers from previous projects. (including pieces of pool flexible piping) (no expense for me there but otherwise you could go in a scrapyard and find all those parts for cheap)
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Turbo oil supply line come from a Beechcraft Kingair B-100 aircraft brake system, (scrap part that layed in the shed for about 15 years) but fits perfectly on the saab turbo, just had to flare it and buy few AN fittings.

Return hose is a regular oil hose, fitting is a ĺ npt barb taped in the oil pan.

Fuel is managed with a Voodoo box that I bought from a guy on this forum. Works actually really good. (200$)

Diff is the stock 1.6 diff, welded. Just make sure you grease the gears before welding so no welding wire pieces stick to the gears.
(FREE)
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Timing has been retarded with the CAS to 4 deg. (FREE)

No BOV, no Wideband. Fitting an air filter is in the priorities.

It obviously runs richer that it should but itís better than too lean.

So It is obviously not a reliable setup, but probably one of the cheapest you can build pretty quickly and have real cheap fun with!

If you like to get your hands dirty and donít mind about spending some time instead of money, that can be a good beater project! This was my first MIG welding experience so definitely not the best welding Iíve seen but the car works fine and boost since 2000km now!
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More pics to come,

Hope you enjoy!
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How to boost for 500$ **Redneck style**-image_zpsb6c99158.jpg   How to boost for 500$ **Redneck style**-image_zps39868511.jpg   How to boost for 500$ **Redneck style**-image_zpsab1aa7e5.jpg   How to boost for 500$ **Redneck style**-image_zps1c4fe999.jpg   How to boost for 500$ **Redneck style**-image_zps12fc9b26.jpg  

How to boost for 500$ **Redneck style**-image_zpsc5ee16c2.jpg  
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Last edited by Mangezmoer; 12-01-2014 at 10:16 PM.
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Old 12-01-2014, 07:34 PM   #2
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Pretty cool man. I mean it is super ghetto and is an m-80 in the making, but it's cool. Wait, no w02, how do you know it is rich???. Noobs are going to salivate, and the wise will cringe.
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Old 12-01-2014, 07:42 PM   #3
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Quote:
Originally Posted by ryansmoneypit View Post
Pretty cool man. I mean it is super ghetto and is an m-80 in the making, but it's cool. Wait, no w02, how do you know it is rich???. Noobs are going to salivate, and the wise will cringe.
Haha I know and haters gonna hate lol. I cant be sure of the mixture of course but what I mean is that the ajustments of the voodoo box is at its richer positions and the exaust smells like unburned fuel. I have no clue what's the mixture when I'm high revving tho but the car runs fine so far and I think I tested it enough
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Old 12-01-2014, 07:45 PM   #4
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In for boom.
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Old 12-01-2014, 08:19 PM   #5
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Here's the downpipe, I dont know why it doesn't want to show in the main post
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Old 12-01-2014, 08:36 PM   #6
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That's really cool stuff man, I like it. How much boost are you running? I'd really want to at least borrow a wideband for a few minutes to see what's going on with the fueling.

I wish there were more of these "builds" on the site. If you're getting enough fuel I really feel like this kind of setup could be reliable-ish. Obviously it's not going to make a ton of power, but should be considerably quicker than a stock miata. Worst case scenario you can always pick up another cheap motor to swap in.
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Old 12-01-2014, 09:57 PM   #7
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Quote:
Originally Posted by pdexta View Post
That's really cool stuff man, I like it. How much boost are you running? I'd really want to at least borrow a wideband for a few minutes to see what's going on with the fueling.

I wish there were more of these "builds" on the site. If you're getting enough fuel I really feel like this kind of setup could be reliable-ish. Obviously it's not going to make a ton of power, but should be considerably quicker than a stock miata. Worst case scenario you can always pick up another cheap motor to swap in.
Thanks for your positive reply! I am actually running about 10psi. No fuel cut or hesitation even in high rpm. I am personnaly really surprised with the actual results of this setup! I built two other cheap setups before this one on honda engines (never as guetto as this one) but this is the most surprising one. I know it is a bit late but you are right, I will try to borrow a wideband to see the actual mixture. And yes, when the 1.6 will blow, I'll look for a 1.8 for sure! I am also surprised of how simple and good is the voodoo box. I am glad I tried it even if I heard a lot of bad comments about it.
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Old 12-01-2014, 10:02 PM   #8
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The only hesitation I have is when I boost a little, and then slowly release the throttle. Then around atmospheric pressure the car hesitates a little. Or if I slowly increase the throttle (very little throttle), just before hitting atmospheric pressure (so still in vaccum) same thing happens. Since my voodoo box is ajusted "full rich" I might be too rich when I am out of boost? Also have to change the spark plugs for new/iridium ones, might be something as stupid as that.
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Old 12-01-2014, 10:07 PM   #9
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Diff, before & after welding



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How to boost for 500$ **Redneck style**-image_zps6545ae2f.jpg   How to boost for 500$ **Redneck style**-image_zps7a724eb8.jpg  

Last edited by Mangezmoer; 12-01-2014 at 10:18 PM.
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Old 12-01-2014, 10:19 PM   #10
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Old 12-01-2014, 10:30 PM   #11
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Lincoln locker = most cost effective posi unit ever.
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Old 12-01-2014, 10:41 PM   #12
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You had me until you welded the diff.

That diff was already going to break with boost, now you've basically made it so it will break backing out the driveway.
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Old 12-01-2014, 10:57 PM   #13
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Quote:
Originally Posted by Full_Tilt_Boogie View Post
You had me until you welded the diff.

That diff was already going to break with boost, now you've basically made it so it will break backing out the driveway.
And then I'll just change it for a lsd, no big deal. There is no point driving a turbo rwd car if only one wheel spins!
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Old 12-01-2014, 11:20 PM   #14
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True enough.
Just watch out, it will let go for sure.
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Old 12-01-2014, 11:28 PM   #15
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Quote:
Originally Posted by Full_Tilt_Boogie View Post
True enough.
Just watch out, it will let go for sure.
I believe you! Most probably just like the rest of the car @312000km.. Lets pray and hope!
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Old 12-02-2014, 01:27 AM   #16
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Hands down Best new member of the year!
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Old 12-02-2014, 01:40 AM   #17
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I have that same saab turbo. Been looking for spares. Were there anymore at the junkyard you got yours from?
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Old 12-02-2014, 02:00 AM   #18
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Did this guy kill a puppy? How'd he get all those negative props?! Certainly not from this pinnacle of ghetto-hood.
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Old 12-02-2014, 08:02 AM   #19
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Quote:
Originally Posted by Mangezmoer View Post
This was my first MIG welding experience so definitely not the best welding Iíve seen but the car works fine and boost since 2000km now!
dont worry, youll get lots of experience constantly fixing this...
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Old 12-02-2014, 12:16 PM   #20
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Wants a good winter car to drive around in Quebec.

Buys a 1.6 Miata, turbocharges it, and welds the differential.

Props awarded.

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