Sam's build thread

[sambb]

[sambb]

Can anyone tell me what the hell an original K04-001 actually is. I've read everything from a K03 comp wheel/K04-023 turbine to K03s comp wheel/K04-015 turbine. Also read that the wastegate port is bigger than a K03 and that they have a stiffer wastegate spring because of that, but who knows. The problem is once upon a time K04-001's only came out of APR and then a bit later there were ED05's. Now though after the chinese got into them, the word K04-001 has come to mean just about anything. Pretty sure this is a genuine APR K04-001 with the APR K04-001 4 bar fpr tune. I think it was referred to as their Stage 3 kit back then but by todays standards its about as far away from Stg 3 as you could get.

[HaydEn]

K04-001 came factory on the 20th/337 anniversary MK4 GTI’s


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[sambb]

did it really. ok. I had seen it referred to as a Borg Warner but I thought when I read that, that it was someone talking about the K04-023.
I always thought The K04-001 was just APR or ECS or someone like that doing there own machining and bunging some bigger wheels into a K03 frame. Stoked that its a BW then. So mine should have a BW placard on it then - i'll have to get in there with a mirror and see what the go is.
Any idea on what the wheels sizes in it are?

[HaydEn]

No idea on wheel sizes. Small!

They aren’t much more chop than a K03, just ‘easy’ as they use all K03 plumbing.


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[sambb]

From what I can gather they are a K04-023 turbine (audi S3/TT) but they use a compressor that is
inducer 35
exducer 50
tip height 3.7mm (same tip height as the oldest K03)
12 blade (2 pairs of 6)

This compressor is even smaller than the Polos K03s which is
inducer 38mm
exducer 51mm
tip height 4.4mm
blades 4/4 (4 long 4 short - 8 total)

Seems you can take a K04-001 with its bigger hotside and put the bigger K03s compressor wheel straight onto the shaft (balanced of course) inside the K03s compressor housing that it came with on the Polo - all lego. No idea if that slightly bigger compressor being driven by the K04 hotside will surge but theoretically a K03s/K04-001 should push slightly more air. I have all the bits to do it and it would be nil cost except for balancing. No idea where to get a shaft balanced though. anyone?

[h100vw]

Buy a known turbo Sam. Swapping out one that didn't perform after putting time and effort into it. Plus tuning. Then doing it again. Even without labour it's a painful experience. I dont even like doing it and getting paid for it��.
I have ported 3 manifolds and sold them all. Still not done my own car yet. Even after seeing what an improvement it can make over a stock one. #toohardbasket

[Sydneykid]

That's a nice Polo Sam, sounds like it will be really good with some of your bits on it.

No idea where to get a shaft balanced though. anyone?

GCG Turbos at Condell Park.

We have some 225/45/16's, I'll put them aside for you. They are about half worn, long story for another day, but the current set up is fast (SMSP = 1.42's & WP = 65's) but hard on the tyres, so we will be moving to new tyres more regularly.

Cheers
Gary

[sambb]

PM'd you RE tyres Gary!

[sambb]

so parts to come are:

- 4 x enkei RP01's (not RPF01) 15 inch x 7 inch 7kg
- 4 x Yoko A050 medium compound 205/50/15 used but still enough for a couple of track days
- 4 x Yoko A050 soft compound 195/55/15 well used but great for hillclimbs on ......
- set of VR6 15inch x 6.5 inch OEM rims
- 1 x 160,000km engine
- DBA T2 slotted front discs & ferodo DS2500 pads
- OE exhaust manifold
- dogbone with superpro big end bush
- most likely a full 2.5inch exhaust system (dump + cat + cat back)

so PM me to let me know if you're up for any of those bits and we'll work out a price. There'll be more to come as I get deeper into it and change from just wrecking the old car to actually starting to build onto the new one.