Drew's MegaCheap homebrew 3b turbo thread (1 Viewer)

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Kewl to hear ,And it is still the same fuelling as it was in NA mode .

I'm ready for the same on the test truck.
Just finished building the rad.

VT
 
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What type of hose did you use on the turbo drain tube? What temperature is it rated for?

Its just 1/2" fuel line, run of the mill NAPA/Autozone flavor.

Such beasties are usually rated to ~250F @ 35psi. I suspect I exceed this at times, but its not like the hose disintegrates as soon as you hit 251F - since I'm nowhere close to the 35psi rating I think I'm fine.

I went out and put my hand on it a few times after big pulls, seems fine.
 
Oil drain hoses aren't that critical. I even used heater hose in a pinch once. It lasted for years but it went all soft and gooey and awful.

The main thing is that they're big enough. Because turbos leak air and exhaust past the seals and down the drain tube into the engine crankcase.
 
I am stoked to see this turbo job.
I want a total cost at the end of it too drew!

Ask and you shall receive! Obviously "mega cheap" is a relative term - I could have cut a lot of corners that I decided not to in favor of a "clean"er install. Some of the parts I chose were poorly priced because I needed to get things quickly. Sooo when you read this be aware that you could probably pull it off for 2/3 the cost:

Triton Waterjet
Manifold inlet flange (dxf file: http://www.cruiseruser.com/3b_manifold.zip)
$86 shipped

OnlineMetals.com
2 feet of 2" square hot roll tube, 1/8" wall
1 foot of 2"x.125" hot rool bar
$24.00 shipped

JGM Automotive (ebay)
Cohline p/n 892-0800 14mm double banjo bolt (linky)
$10.15 shipped


034 Motorsport
14mm Banjo fitting (linky)
$20.00 shipped

Silicone Intake Systems Inc. (linky)
Silicone Reducer, 90° bend - 2.25" to 2.0" - Black (BRE000961)
2.0" Silicone 90° Elbow, Black (SIL000030)
$45.00 shipped

Red Fox Ranch (mudder)
3B exhaust manifold output flange (linky)
$25.00 shipped

JEGS
Dynomax #289-42310 2" mandrel bent J-tube (linky)
$18.00 shipped

MROStop
Parker 4F3MXS -4 Male JIC to 1/8 Male BSPT fitting (linky)
$12.00 shipped

Some-place-online-that-sells-oil-lines-who's-link-I've-lost.com
30" -4AN 90° to -4AN straight braided steel oil line
$30 shipped

Misc
8x M10x1.25 flange bolts (manifold flange) + washers
3x M10x1.25 hex bolts (exhaust pipe flange) + washers, flange bolts
4x M8/M10 "repair studs" (turbo inlet flange)
2x M?? oil drain flange bolts
Bunch-o-hose-clamps
2x 1/8" pipe nipples
2x 2.25" exhaust donuts
$50.00

Scrap/Freebies
2" aluminum crossover pipe
Homemade oil drain flange
Leftover 1/2 of a Spectre Racing #8741 intake duct

Total: $320

Plus the turbo, which you could save $$ by finding in a junkyard:

CXRacing via etdmotors (ebay)
TRB-GT25
(linky)
$230 shipped (or $289 + shipping from CXRacing direct)

So the grand total for my build as shown was $550. :meh::hillbilly:
 
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now for a 3" exhaust stack.

hey, saw the BJ74 on university ave. the other morning...

Heh, yeah we're trying to find the new more efficient way to Stanford in the mornings, we were trying 101 to University...

... so that will probably be the last time you see me take THAT route, haha, epic fail. :D
 
Some-place-online-that-sells-oil-lines-who's-link-I've-lost.com
30" -4AN 90° to -4AN straight braided steel oil line

Good one! ;)

And that's the exact line I'm searching for.

I have a GT35 el cheapo Chinese knock off going onto my 80. The centre section on mine looks to be identical to yours - I think it's a TB34??? If so, the oil drain flange bolts are standard M10.
 
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Now if all of you could just do me a favor:

Don't you think he should now turbo MY cruiser? I see this "ask and you shall receive" line in here... ask him to turbo my 73! I have to go sooooo slooooow up these hills and here he has this creative and (affordable?) design.

Your help is appreciated.
:princess:
 
He's pretty good at giving decent Xmas presents..... so maybe you'll be in luck. ;p:D
 
He's pretty good at giving decent Xmas presents..... so maybe you'll be in luck. ;p:D

He's pretty AWESOME at giving Xmas presents so my fingers are crossed! Hehehe:D

Hey now, last year you got the BJ73, that was a good one. But lets not forget that the year before you got a Snuggie... lightning doesn't strike twice you know :hillbilly:. I already have a nice picture frame picked out for you this year.
 
Hey now, last year you got the BJ73, that was a good one. But lets not forget that the year before you got a Snuggie... lightning doesn't strike twice you know :hillbilly:. I already have a nice picture frame picked out for you this year.


Oh how sad :frown: I like lightning....
 
Was it the cougar print snuggie? That's what my bro gave me. F'ng jerk. This year he's getting an Obama Chia Pet as pay back.
 
Was it the cougar print snuggie? That's what my bro gave me. F'ng jerk. This year he's getting an Obama Chia Pet as pay back.

No, I should only be so lucky! That sounds totally awesome! You are soooooooo lucky....

I have the original, blue-colored one.
 
Well Drew... its been a while now.... how's the forced induction treating you?

What kind of boost and EGT numbers are you currently tuned to?
 
Well Drew... its been a while now.... how's the forced induction treating you?

What kind of boost and EGT numbers are you currently tuned to?

I haven't fooled with the settings at all, it works too damn well as-is!

1050F preturbo on the steepest of the steeps and about 7.5psi. I haven't touched the fuel because my goal was just to get up my hill without slowing to 25mph or boiling the coolant... and I've gotten that and more; it feels blazing fast now and the sound is phenomenal.

I have about 700 miles or so on the setup, zero problems.

Boost comes on (that is, the boost gauge needle just lifts off the peg) at around 1700-1800 rpm. I can't recall exact when I reach full boost, but I think its around 2500. Its kinda funny, if I'm over 2500 rpm I can hold speed or accelerate up just about any hill, but in the 1800-2500 region sometimes I still don't have enough power to accelerate - if I'm climbing the mountain to my house some care is required with my shifts to ensure I stay in the powerband. I suspect a better exhaust than the stock system would help with this, but I'm OK for now.

I plan to bring the boost up a bit to 9 or 10 psi.
 
Sounds very good. More fuel will lower the point where boost comes in and increase boost levels. You've got scope to do that wihtout hitting dangerous temps.
 
Better late than never... but not the greatest videos, my camerawoman is AWOL. Should be enough to hear the WEEEEEEEEEE!



 

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