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Old 04-29-2002, 02:00 PM   #1
Kevex
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silverthorn

Default how hard to make your own turbo kit?

everytime when I see a picture of a turbo kit, it makes me wonder why would it cost so much for just few pieces of pipes? I mean is it really hard to make those parts? could it be possible to make you own kit?
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Old 04-29-2002, 02:05 PM   #2
kastle
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Old 04-29-2002, 02:54 PM   #3
tcs007
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I don't know (kastle), but you've gotten a lot of use out of it.
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Old 04-29-2002, 03:02 PM   #4
proecm
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Simple answer, if you have to ask about it, it's too hard.
/David
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Old 04-29-2002, 03:37 PM   #5
subachad
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Why don't you go ahead and buy a welder, learn how to weld, buy all the parts you need, figure out where to put everything, how and where to tap everything and then see how it turns out. Not to mention sourcing all the parts, making sure everything fits, etc... If it's still good after 20,000 miles or so of driving, then you probably did allright. If not, then a little bit more tuning or development is needed to fix whatever doesn't work.

With enough research though, you are off to a good start and can avoid all the pitfalls of designing and building a turbo kit. You can start by reading the turbo write up on my site.

Oh and while you are at it, why don't you market a kit that I can buy for $1500.

Did I mention even if you build everything yourself, you are still looking at spending $1500 quite easily in just parts.

The "honda boys" can do it because they can mass produce the parts, otherwise known as "economies of scale," with Subarus and other niche market cars, that's just not feasable since only a few kits will be sold in a rather lengthy time.

Chad
93 1.8T
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Old 04-29-2002, 08:10 PM   #6
bensonwrx
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Well, you can buy my partial kit and finish the job from there; it will cost less

-Benson (Another MY98 Owner)
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Old 04-29-2002, 08:42 PM   #7
Hondaslayer
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Hey Benso how much of a partial kit do tou have. How much$$$ PM me




Ben
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Old 04-29-2002, 08:49 PM   #8
bensonwrx
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Ben,
Well, 79-80% of the components are there; keep in mind that's for a daily driving low boost kit. If you are looking for massive power, you can pass on my kit

Got other questions? PM me

-Benson (Another MY98 Owner)
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Old 04-29-2002, 09:41 PM   #9
david2z4
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I have just about everything but the up and down pipes and IC to turbo pipe here for sale. All new parts and never used.


http://i-club.com/forums/showthread....59#post1862559
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Old 04-29-2002, 09:55 PM   #10
Hondaslayer
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So Benson is this a legacy type setup IE: crossmember cross pipe etc etc or a different setup?
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Old 04-29-2002, 11:43 PM   #11
bensonwrx
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Ben,
You can say that it's more like a DSM setup using Garret T-25; another one for spare use
I am currently trying to claim some money back from UPS on this kit because they loss the up-pipe during shipment...so I probably will sell it after this is settled. If no one is in hurry buying my stuffs, then I will wait after my turbo project is done.
B/c it's using DSM idea, originally the IC is gonna be Fender mount; I bought a 98 JDM TMIC separately to do the conversion. So besides the expensive up-pipe it's needed to be custom made, the other stuffs would be extra pipings (cheap) and oil feed/return (not expensive), filter (cheap), and voltage clamp (fair)...the most expensive stuffs are going to be included (turbo w/internal wastegate x 2, downpipe, BOV, TMIC & FenderMIC, A/F controller, FPR, gauges, nuts & bolts, clamps/hoses, pipings for FenderM or try out for TM). Final price really depends on the result of my claim, but probably will be $500-600. I think it's a good price, don't you?
The setup is cool for a 4-6psi, but like I said before it's for daily driving.
See? If you add in the extra stuffs you will need, the whole setup will defintely be under $1500. I didn't add in labor cost, since that's either like a must for all installation or free (DIY).

-Benson (Another MY98 Owner)
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Old 04-30-2002, 06:25 PM   #12
Hondaslayer
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So everything But the uppipe and some misc stuffs huh? Pay for install ? HUH??? Whats that I charge for installs ( I work at Hodges Subaru)
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Old 04-30-2002, 06:48 PM   #13
blaster88
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Actually its fairly hard.

I have done two.

One was mostly preengineered - I used the stock Legacy components for most of it. But all of the little fiddly bits - hoses and fittings etc. took a lot of time and tinkering.

And the install, even with other guys putting in lots of help, took a ton of work.

And I paid someone to do the downpipe, and it cost a lot because it took a lot of time - lots of fiddling, everything has to fit JUST SO and there just isn't a ton of room under hte hood of the RS.

Then I did one from scratch. Conservatively, 40 hours effort in just getting the up-pipe right. Because it has to clear under the trans crosssmember, but go over the front axle far enough away from the CV boot and put the turbo somewhere you can connect inlet pipes and turbo-IC pipes and get water and oil to it etc and so on. It must be JUST SO.

After making it, I made a jig so it might take 3 or four hours to make more of them. (I imagine this is much the process undertaken by subachad). But ask yourself how much 4 hours of someone's time is (much less the 40 hours) - sure, the materials might only be $30-40, it is the time that costs.

The downpipe takes less time after properly getting the turbo in the right place.

If you are mechanically inclined, the bottom line is that it is difficult but not impossible, and only if your own time is not an issue (and that will also be downtime for your car while you are figuring it all out) then it is worthwhile doing. Otherwise, you can pay for someone else's engineering expertise.
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Old 04-30-2002, 08:23 PM   #14
bensonwrx
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Ben,
Yup the uppipe is the most expensive part; so is the downpipe but that's included Voltage clamp and oil feed/return follow; but like you work in a Subaru department...yea maybe you can save up a lot of cash (they have all the tools you know)

-Benson (Another MY98 Owner)
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Old 04-30-2002, 08:39 PM   #15
Graham
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As far as making your own kit, I did somewhat of the same, except for the up and downpipe part of it (probably the most time consuming).

I did a custom Legacy turbo setup on my car, and just to give an estimate of how much time it took, here it is:

-Car was down for three and half weeks.
-Car was towed five different places to have anything from fabrication to exhaust work done.
-At LEAST 50 hours under the hood, just to get everything to fit right, including all of the factory Legacy parts (i.e. crossmember, clocked and rotated turbo, custom bracket for turbo, WRX turbo-back exhaust fitment)
-At LEAST 15 trips to Ace Hardware.


I didn't do any of the welding, but otherwise we did everything, and it was a huge learning experience (my first turbo install on ANYTHING, but hey, I'm still young).


Graham
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Old 05-01-2002, 08:44 AM   #16
subachad
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Wow Graham, just think how much you could have saved with my up and down pipe. No towing just drive gentle from home to the exhaust shop to get the wastegate and rest of the exhaust installed.

Not to mention, once the up pipe is in, then it's just a matter of running the oil and coolant lines.

After selling my next couple of up pipes, I'll start carrying oil feed lines. The goal is to keep them around $40. I'm also considering selling pre tapped WRX oil pans and oil return lines.

Chad
93 1.8T
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Old 05-01-2002, 11:04 AM   #17
Graham
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I know Chad, I probably could have, but I sort of bought all the stuff before I knew you were selling them.

Graham
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Old 05-01-2002, 11:35 AM   #18
yebokmj
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Default WRX oil pans?

will the WRX oil pan fit on any of the subaru engine blocks? My next project will be an Impreza L 2.2 I am putting my JC Sports kit in from my last car. I don't like they way they did their oil plan. Do you know if the WRX oil pan would be compatable? Also if you carry them any chance of getting it tapped for an oil temp probe?
Joshua
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Old 05-01-2002, 11:54 AM   #19
8Complex

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The WRX oil pan will fit any EJ block. Search in this forum for "Oil Pan Mod"... a post I made a while back. In the end it says a few minor tweaks you'll need to make it work.
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Old 05-01-2002, 11:57 AM   #20
yebokmj
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Great thanks
Joshua
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Old 05-01-2002, 12:53 PM   #21
Jewbaru
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I could make a turbo kit with zip ties, duct tape, a big fuking hammer, and a crowbar.
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Old 05-01-2002, 03:30 PM   #22
Chuck
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Subachad,
Which headers are your up pipes designed for? Stock 2.5's, 2.2T's, WRX? I just have to figure which headers to source to take advantage of your oh-so-convenient pipes.

Thanks!
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Old 05-01-2002, 03:46 PM   #23
Darshu
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They're for the stock 2.5L NA headers.

Work fine for me
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Old 05-01-2002, 03:58 PM   #24
Chuck
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Sweet! That's easier than finding 2.2T headers and a stinkin' cross member. Does the up pipe come with a O2 bung?
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Old 05-01-2002, 04:10 PM   #25
Darshu
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I'm sure chad could accomodate you if that's what you want, but I chose not to put mine there.
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