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Posted: Thu Nov 26, 2009 10:10 am
by oldsklaudidub
That turbo looks like it came off of one really big pickup with one seriously turbo diesel engine. Bump to the awesome work as always Derek.
Happy Thanksgiving :-)
Posted: Fri Nov 27, 2009 12:53 pm
by derracuda
i'm just sort of picking random things on the list since it doesn't really matter what order any of it is done, it just all needs to be done

so, throttle cable... factory 4kq is too short, so i pulled a page from my old alpine 20vt days and made a "crimp" out of a 6mm bolt shank. it's about 15mm long, and i drilled a teeny hole in it just big enough for a stripped throttle cable to go inside, then crimped it very tight....


don't worry about cable alignment in the pic. i still have to weld the bracket on the plenum to hold the cable in place

then i had some fun with the torch and some 3/8" stainless rod. this turbo is a wee bit heavy, and i want it to be supported. going in my "rally" style theme of the engine bay, i wanted an over the top of the engine brace. i don't like the idea of using the valve cover bolts or studs because, well, my turbo is bigger than anything audi ever used, and with the age of the head castings and bolts we've seen strip out, i didn't think it prudent to use the VC bolts for this. so, since my dist, is going bye bye, i made a bracket to go in place of the factory dist. plug holder that reached up far enough to be in line. then, interestingly enough, the manifold plenum base has some extra mounting surfaces machined in, so i made another bracket to take advantage of that. the upward support bar is bolted to the extra threads sticking out of the top, front and rear manifold studs.
if you think there is too much leverage for the end of the rod on top of the turbo, keep in mind i had to heat the rod up pretty good to get it to bend, and i also hillybilly calculated that there should be enough flex in this whole brace setup to allow for heat expansion and contraction to hopefully alleviate problems associated with that. i may put one more simple strut type brace from underneath as well.
check it out, i exploded a hammer


flatten the ends to make nice mounting points


this was the tricky part... getting the angles right..


if you look careful you can see the upper turbo coolant line formed. somehow my mind goes into major scavenger mode when i need to make something fit that doesn't belong there, and i start thinking of all the cars i've worked on, and what fittings or tubes or whatever that could be used for an OEM'ish fit and serviceability. this time it happened to be a mercedes ML420 tranny cooler line that was replaced for leaking at the rubber hose crimps. i threw out the rubber bit, carefully tweaked it as needed in a tubing bender, and viola! fits up to the stock audi coolant line from behind the t-belt cover 8)

mount point at the back of the head

mount by the fuel rail. the nice thing about SS is once you've done your hot work with it, you can sand it and get the finish back nice again. once it's all done it will be sanded with 320grit around the tube.

the two top bars will be welded together and then welded to the upward support bar forming a somewhat triangulated support structure. the gap between the flattened ends will serve as the mounting point down to the turbo.


hopefully i can get some more done today before i head back out of town. it's coming along good and i am happy with the progress so far!
Posted: Fri Nov 27, 2009 1:03 pm
by teamplatto
Nice work Derek!
Posted: Fri Nov 27, 2009 1:08 pm
by 3bAudios
Derek, to steal one of Haydn's favorite words, this car will be MENTAL...... great work buddy

Posted: Fri Nov 27, 2009 1:44 pm
by derracuda
maybe i should have "MENTAL" machined into the fuel rail for Haydn's sake

Posted: Fri Nov 27, 2009 2:42 pm
by 85oceanic
As Always really good work Derek. I really think the supports look great!
Posted: Sun Nov 29, 2009 11:37 am
by my2000apb
wooot looking awesome!
Posted: Sun Nov 29, 2009 1:22 pm
by derracuda
i didn't get time to post the pics up friday night, but i finished the turbo brace. so, three things checked off my list, lengthing throttle cable, turbo/header brace, and coil mounting.


and yes, the ring will be just welded to the IM... i need to weld the bracket on for the throttle cable, rings, mount for IAT, and then go to town on the finish, and then clearcoat it'll be done.
Posted: Sun Nov 29, 2009 1:41 pm
by JimCoupeTQ

nice project..
That Turbo looks Familiar.. Saw one of those i think on a Volvo FH 16 Truck when i worked for volvo trucks

.. Are you going to use that turbine regulator on the side of the turbo ?

Posted: Sun Nov 29, 2009 2:18 pm
by derracuda
i plan on using it.. yeah...
Posted: Sun Nov 29, 2009 2:25 pm
by speeding-g60
Toxcheap wrote:the intake looks good now
:stupid:
did you flush the rings then? i personally think it would look better if so...
Posted: Sun Nov 29, 2009 9:31 pm
by glibobbo21
:horse: this poor dude :(
Posted: Sun Nov 29, 2009 10:06 pm
by yodasfro
farking sick dude 8)
Posted: Mon Nov 30, 2009 6:57 pm
by PxTx
Really looks nice Derek. Thanks for sharing your work with nice pics!
Posted: Sat Dec 12, 2009 5:16 pm
by derracuda
crankcase breather plumbing time!
after thinking and thinking, and talking to Jimbo, this is the setup i came up with. i used a bunch of AC lines i had laying around (collected for this purpose), and used some of the fittings for ease of service later.
first up, gotta make a port for the AC fitting to mate to. unibits to the rescue + some careful die grinder work to make the bevel. it's sealed by an O-ring and held in with one bolt.

placement on the valve cover

cut out the flange. i've gained new respect for hand sawing pieces for better accuracy

(and forearm strength)


since this valve cover has already been sorta raped, might as well use it for this test.

welded the flange on (don't mind the burned paint, i'll sand blast and refinish)

next on to a pipe from the catch can to the block



after that i welded on a Y neck to connect it to the valve cover


the tubes are sanded, then i wrap steel wool around it and finish it out, wipe down, spray with high temp clear.

the next pipe goes from the breather can to the intake of the turbo. i learned from this car that i didn't like the milky moisture build up in the crankcase breather system form being open to atmosphere and moisture.
jigged up

welds are getting a bit better. i like doing the high frequency thin alu. just make sure it's clean!


it will pass through the old charcoal canister gromet lined hole

i iz happahhh

Posted: Sat Dec 12, 2009 5:32 pm
by Frank the quattro tank
Looks awesome!
Posted: Sun Dec 13, 2009 1:15 am
by derracuda
Rings- ON

they did what i was afraid they would do, so i have a little extra cleanup on the welds.

vacuum nipples- ON


throttle cable mount- ON

piece by piece... coming together.. *rubs hands*

i checked three more things off the to do list 8)
Posted: Sun Dec 13, 2009 3:35 am
by turbo325is
relay want to know how the vgt work out
Posted: Sun Dec 13, 2009 8:18 am
by WAUG0806
8)
Nice work Mr. D
Are you planning any kind of baffle inside the camcover @ breather inlet?
Posted: Sun Dec 13, 2009 10:31 am
by speeding-g60
Looks GREAT, D..... good to see it coming along.
and glad to see welder is getting used....
Posted: Sun Dec 13, 2009 5:36 pm
by dubsmith
I don't know if i missed something here but I'm not seeing any PS stuff? What's the plan? I never thought to ask if people just block the lines and run it manual.
Posted: Sun Dec 13, 2009 5:43 pm
by derracuda
P/S is on the to do list

i have a special rack coming from the netherlands 8) hello 2.6 turns lock to lock
Posted: Sun Dec 13, 2009 5:48 pm
by audi90quattro10v
derracuda wrote:P/S is on the to do list

i have a special rack coming from the netherlands 8) hello 2.6 turns lock to lock
jesus, dont sneeze while driving

Posted: Sun Dec 13, 2009 5:51 pm
by derracuda
it's stock S2 spec... why should i worry?
Posted: Sun Dec 13, 2009 6:36 pm
by audi90quattro10v
it just seems like a super tight ratio, guess im just used to the 10 turner
