CB Hideaway and Junkyard Turbo

[Schweg]

Most are a t3 flange. I get the Chinese turbo fear for sure. But there are guys running them with success. There is a company that sells a Subaru to t3 flange.


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[Clonebug]

I have one of those flanges......It's on the shelf for my Holset upgrade.



The CB header is designed for a T-3 flange. Most T-3 turbos are too big for the smaller engines but might work good on a 1.9L. You just have to buy the turbo.....Chinese for cheap or big bucks for the Garrett.

You are better off doing the math and figuring out how much hp you want to make....then find a turbo that supports it.

Like I posted above....the WRX turbo is good for 270 crank hp....it's cheap and it will take you a while to get up there. Supporting that much hp takes a transmission that has at a minimum welded 3rd and 4th gear hubs. You will also need a Stage II clutch with a good disc or a Stage I with a puck style disc.
You have to figure out what kind of drivability you want.
You will have a fun time getting there with any kind of carb....speaking from experience.

Pump gas, E-85 or race gas.........blow through or drawthrough.

For a street car you will want to concentrate on making it drivable and reliable at your targeted hp and boost level.

[madmike]

I Have good luck with them fleabay turbo's first one lasted 4 years and still works but it's getting some side play so I picked up another one never done 'Autocross' but do you guys ever get into 3rd & 4th gears? what years ur bug? the late IRS trans has welded gears from the factory for your app. with a cb header find a T3 off an old Mustang

[Smokey59]

270 crank hp is fine for me. Like I said I don’t want all out crazy hp. If I were to use an adapter like on in the pics would the Subaru turbo still fit under my apron? It’s a 74 beetle but I was turbod before with a draw thru set up so my clutch is already upgraded and I have a pro street trans and all the mods to stiffen up the rear. And yeah I know tuning is a pain but I did it before with a carb and I think I’m up for the challenge again.

[buguy]

I doubt it would still fit under the apron. I'd just cut the flange off and weld the right one on. Your going to want to cut the waste gate flange off too and locate it to the collector instead of one of the pipes. Also I took a look and to make 270hp you would need to push 25 pounds of boost. That's a long way from 8!

[kangaboy]

It should fit fine. I have a T25 turbo attached to my hideaway with a self made adapter on my '74 Beetle. The only thing I needed to cut a little bit of body metal for was the exhaust. Other than that, the turbo fits fine.
As far as the wastegate flange, you can move it or leave it. I haven't noticed any ill effects of having it in the original location, but some people like it feeding from all four pipes instead of the ones its on. Honestly I don't think you will notice it when driving if it was moved or not.
Side note, my adapter raises my turbo up about an inch, so that helps with my oil draining into my sump. Chances are you already have a deep sump, but if you don't, you almost certainly will need one when using the hideaway (sans scavenger pump). And get a big fat drain line from the turbo to the sump (5/8th sounds about right).

[Smokey59]

Well I know i wont get the 270hp. Anything in the 150hp range i think i will be happy with. I guess im going to start looking for Td04l-13T turbos so that i can see how they fit. Once i get one, i can see how much clearance I have to determine if I should get an adapter or just replace the flange entirely on the header. I wonder if with the turbo that CB sells you also need to cut the body. I wanted to avoid that but if it has to be done, it has to be done. And since the tdo4 flows around 380 cfm i read somewhere it seems im going to be under-carbing it a bit since mine flows 300cfm.
And yes i have a deep sump that I have already tapped so that I can run a drain to it. Thanks for the tip on the drain size diameter because I had no idea. What size line should I run for the feed. There is a hydraulics shop in my town so I can eventually get one made easily.

[buguy]

According to the turbo calculator at 8 psi you will only be flowing 211cfm.
I'd run a -3 AN feed. Well.... I do run a -3

[kangaboy]

I run a 1/4" feed line and a 7/8" drain line. I misspoke on the 5/8" in my earlier post. The drain port that is on my turbo is 7/8", so that's what I went with. The bigger the better on this one, as you don't wanna have drain issues that cause your turbo to smoke.

[Clonebug]

-13T comes stock with 5/8ths drain tube.

[Chip Birks]

Well I know i wont get the 270hp. Anything in the 150hp range i think i will be happy with. I guess im going to start looking for Td04l-13T turbos so that i can see how they fit. Once i get one, i can see how much clearance I have to determine if I should get an adapter or just replace the flange entirely on the header. I wonder if with the turbo that CB sells you also need to cut the body. I wanted to avoid that but if it has to be done, it has to be done. And since the tdo4 flows around 380 cfm i read somewhere it seems im going to be under-carbing it a bit since mine flows 300cfm.
And yes i have a deep sump that I have already tapped so that I can run a drain to it. Thanks for the tip on the drain size diameter because I had no idea. What size line should I run for the feed. There is a hydraulics shop in my town so I can eventually get one made easily.

That carb flows 300cfm at atmospheric pressure. But you'll be blasting air down its throat.

[Smokey59]

That is very true. Didnt think of it that way

[Dan Dryden]

I run a TD04-13T on a modified CB Hideaway header. You will find that you cannot clock the turbo to the orientation you need it and still use the internal wastegate. I use an external gate and had the wastegate flapper in the turbine housing welded shut to avoid any unwanted bypassing of exhaust gasses.
I found that I was able to raise the height of the turbo when welding the new flange on. This is good because it gives the oil drain a better “fall” into the deep sump extension.
My engine is 1776cc and has run much larger turbos. I can honestly say that this is the best one I’ve had on this engine. It spools quick and gives fantastic road manners. Equally, it’s not so small that it’s constantly boosting.... it still needs load to get it going, so you can cruise along at 70mph comfortably under vacuum conditions, knowing you’re not stressing your engine.
I recently got my bug back on the road after 5 years. A friend of mine who has never been in it before rode passenger and I showed him a couple of 1st - 2nd - 3rd gear pulls...... he’s nicknamed my bug “The Neck Breaker”.

[rubenski]

How much you boostin'?

[Dan Dryden]

How much you boostin'?

21psi..... It was dyno’d at 195hp / 222 ft/lb torque in 2013.
However, I’ve improved the cooling to the water/air intercooler and have match ported and polished the turbo housings.... My butt Dyno says it’s pushing more power, but the doubter in me says it’s just where I haven’t driven it for 5 years and have forgotten what it was like to drive.
There’s a few things I need to do to it first, but I plan to get it back on the Dyno to see what’s going on.