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Engine Specific Info and Questions => IDI Engine => Topic started by: chrisg on March 15, 2012, 01:31:57 pm
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i've been reading for houuuurs and educating myself on the setups, but i can't find out, has anyone successfully compounded a k03 on the manifold and a T3 under it?
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K03 might be too small of a small turbo.. they are a restriction to the exhaust, at anything over 2500 RPMs or something like that..
they are just too small.
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410 just did a compound setup in the TDI section. I think he used the k14 and k24.
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410 just did a compound setup in the TDI section. I think he used the k14 and k24.
Actually I used the stock k03 and a k24 which is as close to a t3 as it gets. If you want zero turbo lag, crazy stupid bottom end torque and don't plan on pushing more than 150 hp, than this is the way to go. The trick to reducing exhaust back pressure with the k03 is to port out the exhaust side and open up the wastegate port a little. Also make sure the wastegate is adjusted so that it can open as much as possible. This setup is great for a budget build but I think I'll try bigger turbos next time around.
I might try using a k24 or a t3 for the small turbo and something bigger than that for the bigger one next time around for a real high horsepower build.
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If you can keep the K03 from being a bottleneck, then I would think that compounded with a K24 or T3 would be SWEET.
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I am not a fan of the instant boost. I would like a "little" lag. The ALH I have with the vnt is full boost probably by 1700rpm. In slick/snowy conditions it really sucks. I little boost by 2,000 isn't bad, but full pull isn't my cup of tea. If the K24 I had on the 1.6 would have started to spool just a couple hundred rpm faster than what it did I think it would have been perfect for me. Maybe in my case a smaller IC?
Just glad guys hear are trying it to see what can be done.
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I am not a fan of the instant boost. I would like a "little" lag. The ALH I have with the vnt is full boost probably by 1700rpm. In slick/snowy conditions it really sucks. I little boost by 2,000 isn't bad, but full pull isn't my cup of tea. If the K24 I had on the 1.6 would have started to spool just a couple hundred rpm faster than what it did I think it would have been perfect for me. Maybe in my case a smaller IC?
Just glad guys hear are trying it to see what can be done.
Sounds like you need to install that gt2256 turbo on your new jetta. ;D It would give you the lag your looking for plus crazy top end. Do you think the wife would notice?
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I don't want to touch the newer jetta. I just want it to be as reliable as possible. Maybe if the 86 was up and reliable as well, but until then I plan on keeping the 01 as stock as it is now with the no name stage 1 tune and .205 nozzles.
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I am not a fan of the instant boost. I would like a "little" lag. The ALH I have with the vnt is full boost probably by 1700rpm. In slick/snowy conditions it really sucks. I little boost by 2,000 isn't bad, but full pull isn't my cup of tea. If the K24 I had on the 1.6 would have started to spool just a couple hundred rpm faster than what it did I think it would have been perfect for me. Maybe in my case a smaller IC?
Just glad guys hear are trying it to see what can be done.
my K24 spools GREAT.. but i dont have my wastegate hooked up..
it spools LOWER than my VNT did.. it makes a good amount of boost before 2000, whereas my VNT would just start coming alive..
the VNT had a much nicer top end power band tho.. i really miss it now that its gone.
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ROR, in order to prevent misinterpretation, you should include that you are dangerously over-fueled and that your VNT did not have functional vanes and they were stuck fully open.
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Dangerously overfueled? I like the sound of that!
ROR: What happened to the VNT?
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ROR, in order to prevent misinterpretation, you should include that you are dangerously over-fueled and that your VNT did not have functional vanes and they were stuck fully open.
how are you one to judge that i am DANGEROUSLY over fueled? been riding around in my car lately, without me knowing?
seriously tho, what leads you to believe i have too much fuel? i have a stock 9mm pump, and its not even turned up all the way..
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ROR, don't get your panties in a bunch. Your input is appreciated and I'm not meaning to criticize. I haven't ridden in your car, and as far as being over-fueled, I'm just taking your word for it. You have said it yourself in several other threads. Such as:
i have a CRANKED UP PUMP.. it pours coals with or without the LDA hooked up.
the collar on the fuel screw, its gone, and the fuel screw is threaded in like 3 full turns past the collar..
If you are "blowing coals" and your max fuel is THREE TURNS ABOVE STOCK, I GUARANTEE EGTs are way above 1500°F. Probably over 2000°. That is dangerously over-fueled. A stock pump EASILY has the capacity to dump enough fuel to melt the pistons well prior to being 'turned up all the way'.
With properly functioning vanes, a VNT15 will produce boost waaaaaaaaayyyyyyyyyyyyy faster than a k24 AND still flow better at higher rpms.
I'm just saying when you pop into a thread and say that the K24 spools faster than a VNT15 or that the VNT15 has better top end, without qualifying your specific and fairly idiosyncratic situation, you are potentially misleading folks who aren't experienced with those turbos.
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ROR, don't get your panties in a bunch. Your input is appreciated and I'm not meaning to criticize. I haven't ridden in your car, and as far as being over-fueled, I'm just taking your word for it. You have said it yourself in several other threads. Such as:
i have a CRANKED UP PUMP.. it pours coals with or without the LDA hooked up.
the collar on the fuel screw, its gone, and the fuel screw is threaded in like 3 full turns past the collar..
If you are "blowing coals" and your max fuel is THREE TURNS ABOVE STOCK, I GUARANTEE EGTs are way above 1500°F. Probably over 2000°. That is dangerously over-fueled. A stock pump EASILY has the capacity to dump enough fuel to melt the pistons well prior to being 'turned up all the way'.
With properly functioning vanes, a VNT15 will produce boost waaaaaaaaayyyyyyyyyyyyy faster than a k24 AND still flow better at higher rpms.
I'm just saying when you pop into a thread and say that the K24 spools faster than a VNT15 or that the VNT15 has better top end, without qualifying your specific and fairly idiosyncratic situation, you are potentially misleading folks who aren't experienced with those turbos.
it never poured coals with the VNT.. it only started pouring coals with the K24..
and the spool thing, ill give you that.. but the VNT having more top end than the K24, that still makes sense to me, because @ WOT, the vanes on a VNT better be wide-assed open, otherwise your VNTs gonna be exiting stage left..
anyways, i still dont think im DANGEROUSLY overfueled.. i think i would have burnt an engine down by now..
i will hand it to you, i am over fueled, but i dont think to the degree you assume..
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So back to the original topic, k03 with a t3 will work very well together. I have a few drives on my k03, k24 build and I'm very happy. Boost builds very quickly and pulls hard as high as the engine wants to rev. I'm running 26 psi but it wants to climb much higher. This setup can run 30 psi all day long.
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thank you, looks like i'm rebuilding that k03 in my basement =]
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So back to the original topic, k03 with a t3 will work very well together. I have a few drives on my k03, k24 build and I'm very happy. Boost builds very quickly and pulls hard as high as the engine wants to rev. I'm running 26 psi but it wants to climb much higher. This setup can run 30 psi all day long.
What are your pump specs oh great one? ;) That sounds like some good stuff you got going on brotha!
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So back to the original topic, k03 with a t3 will work very well together. I have a few drives on my k03, k24 build and I'm very happy. Boost builds very quickly and pulls hard as high as the engine wants to rev. I'm running 26 psi but it wants to climb much higher. This setup can run 30 psi all day long.
What are your pump specs oh great one? ;) That sounds like some good stuff you got going on brotha!
I'm running the ahu pump with electronics, 11mm pump head and camplate from an alh. Smog .216 nozzles with a stage 5 tune from Malone. No lack of fuel that's for sure.
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how about a video??? id love to see how it runs, for under 150 hp, like you say it is a good option, but to me if i were doing all the work id want the t3 to be the small turbo and something bigger as the big turbo like a 60 trim t3 or some type of t4
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I plan on doing a video once we're closer to being done. The exhaust is completely done now and we're just wrapping up all the loose ends. Maybe in a week or so for a video. The more I drive the truck the more I like how it feels.
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Can't wait to see pics or a video.
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how about a compound setup with a VNT (HP) & wastgate turbo (LP)
see my sig for a cheap stand alone VNT controller
+1 for pics
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As soon as we get a chance we'll do a video. We have over 1000 km now on the truck and everything is working really well. We had two issues that Malone pointed out to us after sending him some logs. First off, we weren't getting enough advance out of the pump. Actual advance started dropping off compared to requested advance after 3200 rpm. Turns out the collar that holds the piston in the relief valve had worked itself out which is apparently quite common on these pumps. Malone suggested performing the Keystone mod to prevent this from happening again.
The second problem was the boost was slow to build up to the 26 psi limit we had set. Turns out the k03 wastegate was opening too soon. We weren't hitting max boost until 2800 rpm. Now max boost is closer to 2200 rpm. So after these two issues were addressed, smoke levels are down to a light haze at WOT and the power comes on way sooner.
I've said it before, these turbos work very well together and give a very wide power band. You can easily boost up to 30 psi from 2500-4500 without running either turbo out of there efficiency range.
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I got a k14/hx30 that works pretty good. Boost is around 30 to 35 psi. Spools well down low and alright up top. max egts are around 1200 to 1400. Also using water injection and that makes a huge difference. I can feel it when it turns on. Big boost in power.
The k14 is a little small for the hx30. It limits the boost coming out of the hx. I can push the hx to 35-40 and only get 32 at the manifold. The k14 compressor housing is just to small. Also I am not really compounding on the top end as my wastegate is fully open at 20psi. I should post up a video of it someday.