Raced an 08 Audi S6 and won!

[Rabbit on Roids]

Here are some pictures of my car and my current twin turbo set up. I also added some pictures of my big turbo project that I tried before the twins. It didn't work very well as a daily driver, major turbo lag thats why I went for the twin set up . I am going to change the exhaust manifold and primary turbo(too restrictive causing high EGT's) I will post some more pictures when I'm done.

http://s903.photobucket.com/albums/ac231/davorkacic/

got any particulars and specs on your turbos and build up?

[79rabbit4dr]

if I were a mechanical genius, I'd throw the audi 2.7 biturbo quattro setup in a mkI, now that would be fun!!!

[Rabbit on Roids]

if I were a mechanical genius, I'd throw the audi 2.7 biturbo quattro setup in a mkI, now that would be fun!!!

i cant remember what car they used it in, but you could get a quattro trans coupled to a 1.8t in something. and the engine sat sideways in the front, like a mk1, and it had a drive flange off the back of the differential housing. and im pretty sure you could bolt a AAZ or 1.6 to the trans, but thats about the extent of bolting things together.

[foxracer1]

Need more pics of your car! or a build thread!

Looks good i like it. What did you do with the old intake you had on the big turbo setup? Turbo specs?

[lucasone]

I still have the big turbo manifold, I couldn't use it on my current set up because the runners got in the way. I built it out of a 1.9 Ford escort manifold. It was more work than it was worth.
The big turbo project (major turbo lag)I used a HX35, off of a automatic Cummins. On the twins the biger turbo is a TD05, I believe its off of a Mitsubishi Evo and the smaller one is a GT15 (stock on the AHU). The GT15 is very restrictive and creates a lot of back pressure, the log style manifold doesn't help either.The only reason I used it is I didn't want to do a bunch of fabricating during the experimental stage, now that I know what works well and what doesn't I can fix the problem. I am in the process searching out a different turbo and building a new manifold. When I am done I will post the new info.

Cheers!

[foxracer1]

Would you sell the intake? I assume it fits the 1.9 D-ports?

[lucasone]

I am interested in selling it, but I don't think the manifold on its own will give you much performance gains. Also the intake comes from the opposite side from the stock one, so you might have to do some custom fabing. If you are still interested let me know.

[smoken u]

im not sure if you mentioned it already or not, but where did the ehxaust mani come form, or was it a custom fabbed piece?? by the way, awesome car, must be wicked fast, how much lag in terms of seconds, did you have with that HX-35??

[lucasone]

I'm using the stock manifold, which I will change soon. I can't remember how many seconds of lag it had with the HX35, but It wouldn't make any boost till aprox. 3200 RPM and I could only get about 15 PSI out of it before running out of gear. There just wasn't enough exhaust for a turbo that size.

[Smokey Eddy]

hmm im glad you did this before i did and you've brought it to light.
i just got an HX35 for free and was going to try this...
i think my signature still mentions it even...

[4wheeler]

I`m in the process of building a compound setup myself.
I am testing it in a friends rabbit. I m using a k03 and a T3
To defeat the EGT issue from the smaller turbo I ve created a bypass directly from the exhaust manifold before it goes into the K03 and plumbed it into the larger turbo. it s activated by a line from the T3 to a blowoff valve set at 15PSI.
Can`t rely on the wastegae at all, to restrictive.
Neather turbo compresses air more then 15PSI at most. Very effective for the whole RPM range which is 900 to 4500.
My biggest issue so far is getting the head to flow enough volume...prechambers are to restrictive.

In the middle of locating a TDI from 97-99, complete car required...

[Rabbit on Roids]

what do the pre chambers have anything to do with anything on a diesel? no air goes thru them, just a little bit of the air thats already in the cylinder. its not like they have intake air coming out them. just the fuel mixture..

i guess i dont see what the pre-chambers have to do with intake restriction is all... school me.

[rabbitman]

what do the pre chambers have anything to do with anything on a diesel? no air goes thru them, just a little bit of the air thats already in the cylinder. its not like they have intake air coming out them. just the fuel mixture..

i guess i dont see what the pre-chambers have to do with intake restriction is all... school me.

A correcter term for pre-chamber is swirl-chamber, since that's what it does to the air.

Yup that's just it, the air fuel mixture is what goes through it. At TDC there's very little space above the piston, so the air packs into the swirl-chamber. Then when the injector fires into the chamber all that burning air/fuel mix wants to get out of there in a hurry through that little hole.

So too small of hole and the swirl-chamber is gonna try blowing out of the head.

IIRC Dave Crosses franken build puked a swirl chamber out.

[gldgti]

OP - do you have any pictures of the sequential setup inside the engine bay? I am working on this myself at the moment in my mk3 and just interested to see what you have moved and to where for various things.

Kind regards,
Aydan

[punkvideo81]

great build! you've got to post a video of this car in action.