Just to confirm - K03 to K04 conversion

dj_hektik · Dec 31, 2006

Hi...

I have been searching around, and I would just like to confirm that what I plan to do is correct to convert my Leon 1.8T (180) turbo from the current K03 to a K04:

Go to breakers and find a TT Quattro or S3. Buy the Turbo and Manifold.
Buy the TT 225 downpipe from 42 Draft Designs. Link
Make custom catback exhaust to fit
Get a remap to support K04 plus any other stuff like 4 bar FPR
Enjoy

Is there anything I'm missing?

Do I need anything other than the Turbo unit and manifold from the donor car? do I need oil/water lines? any hoses?

Do I need the donor car's MAF? If so, what intake pipe can I use to fit the AUQ ancillaries?

Mitchy · Dec 31, 2006

It's not as easy as that. You've missed a few things...

S3/LCR 386cc injectors
S3/LCR MAF
K04 turbo intake pipe
K04 oil/coolant lines

Then because you've changed your MAF/TIP, you'll also have to find a way of mating your airbox to it, otherwise you'll need a K04 based airbox/filter.

Im not sure about the exit pipe from the turbo, i've heard you may also need to change that.

But apart from that, yes that's all you need

Scotty_b · Dec 31, 2006

Have a look at h17och's post about his ibiza conversion as he lists everything you need and the problem areas etc. Should be the same for a k03 leon

Jay20VT · Dec 31, 2006

dj_hektik said:
Hi...

I have been searching around, and I would just like to confirm that what I plan to do is correct to convert my Leon 1.8T (180) turbo from the current K03 to a K04:

Go to breakers and find a TT Quattro or S3. Buy the Turbo and Manifold.

Buy the TT 225 downpipe from 42 Draft Designs. Link

Make custom catback exhaust to fit

Get a remap to support K04 plus any other stuff like 4 bar FPR

Enjoy

Is there anything I'm missing?

Do I need anything other than the Turbo unit and manifold from the donor car? do I need oil/water lines? any hoses?

Do I need the donor car's MAF? If so, what intake pipe can I use to fit the AUQ ancillaries?

i'm not being funny but why not do what I did. Sell the cupra and buy an LCR. I was thinking of doing what you are about to do but their is alot of different things you get in the R that th LC dont have, brakes for example.. :redface:

Balf2k · Dec 31, 2006

Totally agree with Jay, brakes are a must mate, also think about intercooler, if you just have single side mount then I doubt that's adequate enough for when the summer time comes.

Scotty_b · Jan 1, 2007

hey i have the dual mounts, turbo, down pipe etc for sale!

dj_hektik · Jan 1, 2007

Sorry I didn't explain.

I live in Saudi Arabia there are no LCR's here and importing is a headache. If I could import a car it would be a Skyline GTR, not an LCR!

Anyway about the brakes/intercooler/suspension - my K04 idea is instead of other turbo kits - EIP, IHI or whatever. Of course I will install a FMIC, uprated brakes etc. but I was wondering about the K04 that's all.

I know there is a K04 001 and a K04 023 or something like that. As I understand the 001 model uses the same housing as the K03 and is compatible with the DP/intake and others but is not as good as the 023 model?

Also, scotty_b, what do you have for sale? PM me.

dj_hektik · Jan 1, 2007

plus if I take the S3/TT225 intake pipe, will it fit the hoses on my car? when I bought the forge TIP there are different types for 180 1.8T's. I suppose i'll have to note everything that plugs into my TIP and compare with the donor car.

Plus I don't want to fabricate anything. If I can't get all the parts from the donor car/VAG dealer then im not interested. I thought it would be easy that's all. on h17och's post I saw a lot of custom work but then he has an Ibiza.

Or I can just buy this for $3000: (supposed to be good for over 300 whp!)

Feel · Jan 1, 2007

Problem with a K04-20/23 on a k03 car is that the turbine outlet and therefore dp connection is in a different place (so you'd need a new dp), and would get in the way of the k03 charge piping, or be close enough to case heat issues.

You can't use the k04 charge piping (I don't think) without changing the inlet manifold over to the k04 car's one, because there wouldn't be room to get down to the/an intercooler then back up to the throttle body.

This was discussed not so long back on a thread with pics.

Then there's mapping; whoose map would you use - you could probably go for a boost controller, but what about fuelling?

Eliminator GTRS seems like a better bet, even with the fitting issues on 6 speed cars (although it has been done) and should make more power. If you could get a spare ECU to Revo they have stg3 code for the eliminators.

dj_hektik · Jan 1, 2007

Feel said:
You can't use the k04 charge piping (I don't think) without changing the inlet manifold over to the k04 car's one, because there wouldn't be room to get down to the/an intercooler then back up to the throttle body.

This was discussed not so long back on a thread with pics.

Then there's mapping; whoose map would you use - you could probably go for a boost controller, but what about fuelling?

Eliminator GTRS seems like a better bet, even with the fitting issues on 6 speed cars (although it has been done) and should make more power. If you could get a spare ECU to Revo they have stg3 code for the eliminators.

Well it looks like a bigger headache than I thought. I did not ignore mapping but that should be simple for any VAG mapping company as the K04 and 1.8T is well known. I suppose a Cupra R map should be fine as long as I use the injectors, MAF and FPR. Anyway.

I hope to be an EIP Dealer very soon so i'll wait for that I think 300+ whp sounds very good - will definitely need 245 or wider tyres and an LSD.

I'll also use it to "demo" our other products - DEI CryO2, NOS, Forge, Toyo, H&R, BBS Wheels, Sparco + more. Lovely

paul26982 · Jan 1, 2007

what exactly would be the gains

especialy on a diesel cupra, just a thought not guna do it, dont jump on the band wagon

dj_hektik · Jan 1, 2007

paul26982 said:
what exactly would be the gains

especialy on a diesel cupra, just a thought not guna do it, dont jump on the band wagon

what do you mean?

paul26982 · Jan 2, 2007

what would b the gains going ko3 to ko4

dj_hektik · Jan 3, 2007

paul26982 said:
what would b the gains going ko3 to ko4

from 180 hp to about 260 i think.

The max I can get out of the K03 (remap/exhaust) would be 230-240. K04 should be good for 290-300.

The T3T4 pictured above should easily give 340 on its own - closer to 400 with supporting mods.

Snoopie · Jan 3, 2007

Just some advice, Putting a K04 to nearly 300hp, won't do a lot for your turbo in the long run, nevertheless, some of your components won't last very long either.
Up to you, but if your interested only in high HP figures, then go for the gt28, IHI etc, will cost you a lot less money in the long as you'll have to get everything changed at once.

Scotty_b · Jan 3, 2007

My k04 should be running over 300 and all in its stride

Feel · Jan 3, 2007

Yes, but yours isn't a stock k04...

(plus, I don't believe the 300bhp is proven - yet)

paul26982 · Jan 3, 2007

would love to see one on the tdi cupra, might get one if i see one cheap enough, labour isnt a problem

Scotty_b · Jan 3, 2007

Still a k04 tho!

Besides my car stock bar an SCN sticker!

I did take her to power engineering but didnt get a run in the end

Feel · Jan 3, 2007

paul26982 said:
would love to see one on the tdi cupra, might get one if i see one cheap enough, labour isnt a problem

Not going to work, I don't think - don't weasels need variable vanes?

Just to confirm - K03 to K04 conversion

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