mTDI Turbo Options

[diesel smoke]

I know there has been a few threads on Samba, I'm a member there too, but there was never anything worth reading. You mean an oil cooler for the trans? The trans itself isn't really weak, it keeps itself together pretty good. The weak spot seems to be the input shaft.

There's a guy on our local club that put a 1.6 TD in a Baja bug and broke the input shaft on that. However, I know bus transmissions are quite a bit stronger.

I think I'm just trying to be conservative on this build.

[Street Toys]

From what I can see the best & easiest turbo to bolt onto a Mtdi is the K03/K04 hybrid wastgate unit that both Boraparts and Kermatdi sell. Basically its a Ko3 turbine with a K04 compressor. I drilled through the tdiclub forum & PM'd a bunch of guys there who have one & also talked to the folks at Kerma & bora parts. I was actually very surprised that the responses, of about half a dozen owners who replied all said the exact same thing. Good spool, 20psi and no issues. Its still a K03 hotside so its a bit constrictive at high RPM, I imagine in my van i'd be running around on the highway at 8-10psi so not the most efficient option from a EMP point of view. Also they have the stock K03 shaft, BUT from what I can see the K04's have the same 7mm shaft anyway. The best thing is if you have a rebuildable K03 around (I have 2) both of those vendors will give you a core exchange, $100 i think. Last time I looked they were around $700, not to shabby for a pro rebuild with all Garrett parts.

Hello Blackdogvan,
  Yes the K-03/04 is an ok turbo but you have a couple of problems with your analogy.
    First, the main shaft of that turbo may be 7mm but the shaft diameter coming out through the compressor wheel is only 4mm!
    Second, that turbo is a Borg and Warner KKK turbo and Garrett parts will not fit in it no matter what size hammer you intend to use!   These reasons alone is why I do not ever use a KKK based turbo in that frame size for a hybrid construction.
  My manual control unit is only weeks away from being released, I finally got my custom springs delivered for the boost control valve and the boost specific actuator will be in production very soon!  It is only a very short time until everyone can install manually controlled VNT turbos in their M-TDI's   Less than 2 weeks by my calculations!

[blackdogvan]

not to shabby for a pro rebuild with all Garrett parts.

Hello Blackdogvan,
  Yes the K-03/04 is an ok turbo but you have a couple of problems with your analogy.
    First, the main shaft of that turbo may be 7mm but the shaft diameter coming out through the compressor wheel is only 4mm!
    Second, that turbo is a Borg and Warner KKK turbo and Garrett parts will not fit in it no matter what size hammer you intend to use!   These reasons alone is why I do not ever use a KKK based turbo in that frame size for a hybrid construction.
  My manual control unit is only weeks away from being released, I finally got my custom springs delivered for the boost control valve and the boost specific actuator will be in production very soon!  It is only a very short time until everyone can install manually controlled VNT turbos in their M-TDI's   Less than 2 weeks by my calculations!

Oops, nice catch on my brain fart, all KKK/BW parts i mean. The shaft size was one of my concerns on the hybrid, thats why I went to the trouble of asking so many owners if they recommended their turbo and they all did.

Well VNT's for everyone in a perfect world, the OP wanted info on the easist bolt on WG turbo, any info on your super 17 for this discussion? I am eagerly looking forward to news on your new VNT controller, need any guinea pigs?

[golftd412000]

hey,
the k16 is a hybrid k24/k14 ,compressor k24/exhaust wheel k14(from 5cylindres tdi)

[oldskool rich]

would a K26 be any good? ive got one spare and i was gona run it in my corrado 1Z?

also anyone know what power a gt15 (not VNT) is capable of producing? after loosing my fight with VNT im never going back to that

[blackdogvan]

would a K26 be any good? ive got one spare and i was gona run it in my corrado 1Z?

also anyone know what power a gt15 (not VNT) is capable of producing? after loosing my fight with VNT im never going back to that

Too big Rich, look for a K16, (K14 turbine with K24 Compressor) You got them in Europe on the wastegate 5 cyl tdi's. Weren't the K26's on the 5 cyl audi gas burners?

[CdnVWJunkie]

I'm curious about the K26 if anyone run one before. 

[svenakela]

You might not have a turbo, but if you have a VNT why worry?
The VNT is more or less there to get less lag (faster spooling). Place it in an open state and it will still work but with a little more lag than usual. Save the money and make the change later.

[snakemaster]

would a K26 be any good? ive got one spare and i was gona run it in my corrado 1Z?

also anyone know what power a gt15 (not VNT) is capable of producing? after loosing my fight with VNT im never going back to that

i run a gt 15 on my golf i would say 130hp ish comes in at 1400rpm  i am happy with the power it puts out and still brill on fuel

[golftd412000]

I'm curious about the K26 if anyone run one before. 

he start in a tdi elec at 3500tr/mn

[golftd412000]

would a K26 be any good? ive got one spare and i was gona run it in my corrado 1Z?

also anyone know what power a gt15 (not VNT) is capable of producing? after loosing my fight with VNT im never going back to that

Too big Rich, look for a K16, (K14 turbine with K24 Compressor) You got them in Europe on the wastegate 5 cyl tdi's. Weren't the K26's on the 5 cyl audi gas burners?

+1 it's the best compromise in the french section moïse in the one tdi-m he hase got this turbo

[CdnVWJunkie]

golftd412000-  I don't really understand what you mean?  Could you please explain? 

The K26 looks pretty big but I haven't done a side-by-side with a K24 to see exactly how much bigger they are.  I had an e-AHU with a K24 on it and there was very little lag which seemed to surprise lots of people.

[golftd412000]

yes in a tdi elec the k24 spol  faster in a tdi-m the lag is mor important

for a picture of k16 see this:

http://www.vwdiesel.net/forum/index.php?topic=5250.450

[Rabbit on Roids]

the K26 is going to be HUGE and LAGGY on a 1.6 diesel.

they came stock on 3.9 litre volvo penta diesels. and they were even laggy on those engines. they had superchargers to aid with the spool on most of the pentas.

not saying a straight K26 wont work, but if you took your GT15, put it on the engine first, and had a big external wastegate for it, and bolted the K26 on after the GT15, that would be a pretty good compound setup i would imagine. and you wouldnt have to be working either turbo very hard. then you would have enough boost to blow a hole in your hood about the size of a head/manifolds/injectors. haha.

[golftd412000]

i talk k16 no k26