Porting an eBay 20g turbocharger

The price of this turbo will make it a popular purchase, so I figured I'd air out some tech about ways to improve it. This thing is not for everybody. I wouldn't feel comfortable bolting it on my car the way it comes out of the box. I could complain about its flaws except that so far absolutely none of them have been a deal-breaker for me. To me it's like an empty canvas. I promise to eat those words if it happens, and share my poop. Usually I can easily correct these flaws myself and so can you.

BUT!

If this thing turns out to perform well with what I do to it... It could easily be a cheap, quick ticket to an 11-second car. Something you could do with a free running 1g, a hacksaw, and about $500 worth of fuel upgrades. Yeah, that would be ridiculous, and I'm bolting it onto a well-modified car... But that being possible speaks volumes for what a DSM can really do.

This is no big deal to me. I'd rather guinea pig my car for you in HD so you guys can decide whether or not you'd spend your money on this. Really it's an experiment because this isn't my daily-driver, and it contributes to building a better Colt.

Tools I used involve:

Scratch awl
Milwaukee model ???? 1/4" straight-shaft electric DIY grinder
Cone and ball-shaped double-cut burs
180 grit high-speed flap wheel
Dremel with a flex-shaft and a tiny 320-grit flap wheel
a zip tie
10mm combination wrench
tiny flat-blade screwdriver (00) for the e-clip on the wastegate
compressed air

Category:

Autos & Vehicles

Tags:

• port
• turbocharger
• exhaust
• housing
• wastegate
• 34mm
• flapper
• ebay
• 20g
• TD05
• TD05H
• TDO5H
• Mitsubishi
• DSM
• Turbo
• Eclipse
• Talon
• Laser
• Galant
• VR-4
• Mirage
• How
• to
• how-to
• DIY
• repair
• modify
• polish

[Jafromobile]

@JCaSs1001 This video was done to prevent BOOST CREEP, not more boost. I don't know where you get the idea that I'm trying to make more boost with it? I had a big16g prior to this that crept to 30 PSI with a 30mm port. This is a street-driven car. Had you watched the other hundred videos, you'd have understood the context of why I'm doing this.

I've never said this to anyone on my channel, but based on your comment, I don't want you to watch the rest of my videos.

[Jafromobile]

@JCaSs1001 Honestly, I wasn't expecting this. You were under no obligation to post it. Thank you because it speaks well of you.

Indeed, context is important. Your comment helped me realize (a day late) I made an error in excluding my big16g's experience from this video. I didn't explain the boost creep thing or what boost creep is all about. Given that, I see how easily it can be misinterpreted. I will update the info section. This exchange actually helped to improve this video, thanks!

[BomalleyGST]

@marek0086 <---- now that what i call a hater/troll. Stop tryin to call him out on some stupid shit. In pretty sure he could school your ass. If ya wanna sound smart go preach to some newbs. Atleast then you wont soun like a complete jackass. Enjoy the awesome videos jafro puts on here and stop being a troll...an most of all a bitch....stick to the honda videos. Thank you for spittin out your magazine facts fag!!

[prillall]

I have a question. How big is the turbo in the video? Size? I am planing a new turbo for Renaul 5 GT car. It has a Garett T2 turbo on it. What size of "cheap china Ebay" turbine will be close to T2 size turbine?

Thanks.

Great wideo by the way :)

[shutupnshift04]

@jafromobile awesome vid i just ported and polished my turbo because of this, It came ut geat. How is your ebay turbo holding up still? a lot of people call them garbage and i cant see them being that bad

[marek0086]

@Jafromobile~ but by removing that much metal from the housing, arent u making it weaker in that spot, thus more prone to warpage?

[Jafromobile]

@marek0086 it's barely touched up with a 180 grit flap wheel. It took less time than anything else I did in this video.

To me, a high gloss ends with 600 grit, and some considerable time with flannel wheels, felt bobs and polishing compounds. All I did was take out the marks from the carbide bit. Steel shines brightly when it's sanded with any grit of sandpaper.

[marek0086]

@Jafromobile~ Dude u dont have to polish it to such a high gloss!.

[Jafromobile]

@marek0086 Correct. I don't ever do this on intake parts because of this. But I always do it on exhaust stuff I port because high spots and deep scratches create heat spots that later turn into crack-and-leak spots. It happens a lot faster on forced induction engines than NA stuff, but when I polish runners of any part, it's not for performance reasons. :)

[marek0086]

@Jafromobile~ POLISHING it doesnt give u any gain in performance!