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General Information => Smoke Tales => Topic started by: lucasone on December 23, 2009, 06:18:45 pm
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I have been working on my twin turbo project over the last couple of years and finally got it working really well. A guy who works upstairs has been checking up on me every once and a while to see how thing are coming along. Anyway we were both driving out of the parking lot, leaving for lunch at the same time and he rolls down his window and says "lets see what your VW can do". He's driving his newest toy an 08 Audi S6 quattro with a V10 5.2 L. I was kind of curious to see how well my car would do. I figured I would take him off the start and then he would come blasting by. So we cound down 3,2,1, go and we step on it. I was concentrating on a good launch and a good shift into second with out to much wheel spin, I knew if she broke loose in second it would be all over. So I didn't look to see where he was at untill I shifted into 2nd, I looked over expecting to see him beside me, when I noticed his front bumper was at my rear quarter panel. I put it in to 3rd waiting for him to go by, he slowly started inching his way up, but never even made it up to my door. We were doing about 115 when he backed out of it because he had to make a left turn ahead and I was in the left lane. I'm sure if we kept going he would have eventualy passed me but I was pretty excited to have beat him, besides if he didn't back out of it I would have had to my EGT's were at about 1350 F. He was shocked, but a good sport about it, he made no excuses.
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That's perty crazy!! What car and engine do you have?
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Yah , i've driven one of those , and they are quite amazing, but i'm not suprised you beat it past 100. they're pretty heavy so getting off the line. Who needs to go past 115 anyways !
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we still dont know what sort of a twin turbo ride you have tho? it would be way sweeter to know what you were driving. for all we know you could have been in a duramax with 100 psi boost.
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I have a 97 MTDI Jetta running 35 psi boost(AHU motor). I know you can run 35 psi or more from a single turbo set up, but I found compounding turbos give a wide power band range and insane torque. Still a work in progress, I have to cure my high EGT issue. I'm swaping the primary turbo this winter.
Have a Merry Christmas!
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pics or it didn't happen!
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I live in Canada so when I say he backed out of it at 115 I'm talking kilometers per hour not MPH.
What kind of pics? Engine or action? Kind of hard to lean out the window at 100 km/h
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both if you can, but I was referring to pics of the engine, and some more details about the build.
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PM sent.
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I live in Canada so when I say he backed out of it at 115 I'm talking kilometers per hour not MPH.
What kind of pics? Engine or action? Kind of hard to lean out the window at 100 km/h
That does make a little difference..hahaha. Nice work.
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If you are who I think you are you definitely need to post some pictures. Your car is sexy
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Please do post some pics. I'm only a stones throw away. ;D Do you post over at www.okvw.ca (http://www.okvw.ca) ?
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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/ (http://s903.photobucket.com/albums/ac231/davorkacic/)
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WOW. now that is nice. but why oh why, your pictures put bad thoughts in my head... i've only just put a new turbo on my AAZ and now i think i need 2.
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I think I'll be drooling all day....I want that motor for my golf :'(
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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/ (http://s903.photobucket.com/albums/ac231/davorkacic/)
got any particulars and specs on your turbos and build up?
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if I were a mechanical genius, I'd throw the audi 2.7 biturbo quattro setup in a mkI, now that would be fun!!!
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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.
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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?
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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!
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Would you sell the intake? I assume it fits the 1.9 D-ports?
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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.
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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??
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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.
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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...
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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...
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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.
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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.
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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
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great build! you've got to post a video of this car in action.
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Beautiful fab work. What size external wastegate is that? What kind of boost and EMP's do you see? Are you planning on swapping the small turbo out for a vnt?
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I just replaced my small turbo with a VNT 17/22 and refabed every thing. I built this fancy lever that reverses the direction of the VNT control because I am using a boost actuator and not the vacuum actuator (MTDI). Any way to make a long story short I learned the hard way that I didn't need to reverses the direction of the lever. I went for a test run and it made very little boost (because the vanes were open instead of closed) until my second turbo made about 15 psi and moved the boost actuator to the closed position and the boost came on very strong and fast (50+psi) and I destroyed my new turbo. I broke the shaft in half and damaged both wheels. The turbo is getting rebuilt and I should have it all put together by the end of the month.
I have lots of new pictures that I will post as well. This time I am going to do some VNT control R & D before I bolt on the second turbo.
I will keep you posted.
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Can i come up and see this car?
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Nice impressive work. :P
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PM sent