Audi Coupe Quattro 10vt by tbiro

[tbiro]

Hello

Let me introduce my car. I have bought my car 9 years ago, during this time a lot has happened(engine swaps and failures). For example I used eaton(m45-m90) superchargers to 3 years, but this is an other story..

Let's get to the point, my project car is an 1986 Audi Coupe Quattro with 10valver turbo swap(mc1).

Here are some pictures:

[gavs20v]

I like that a lot !
Anymore details ?
Gav

[tbiro]

Let's see the engine.

v1:

-I bought an MC1 and rebuild it with OEM parts.
-I switched to EFI (Megasquirt v2.2).
-stock 10v head ported, polished with stock valves(non sodium filled)
-k26/k24 hybrid turbo (later switch to k24-7000)
-custom exhaust manifold(handmade by friend)
-double small FMIC(don't need to cut chassis)
-premium petrol




















First tries GTECH shows 229 HP on 1 bar boost.
Some twaks and bigger boost it can put down 247 HP.

[tbiro]

Next steps...

v2:

-switch to e85
-bosch 044 fuel pump
-siemens dekas 630/720ccm injectors
-KKK k24#7000 maxed out at 1.4bar
-straight pipe 60mm diameter



At this HP level came hugh problems with stock clutch

Some Videos:

https://www.youtube.com/watch?v=5qkIF09vSKA

https://www.youtube.com/watch?v=mHkNyouDNu0

[Bandesz]

szep verda, varjuk a folytatast

[tbiro]

csak a múltat érintettük eddig
More comin later

szep verda, varjuk a folytatast

[tbiro]

Ok, that was the past, current setup:

v3:

-sachs RS2 clutch kit hardened up to 800nm
-stainless steel 70mm exhaust with 1 muffler
-holset hx35w with KKK housing from Mercedes Atego









Result with Holset:



Against S4 B5 stage 3(wait for second part of the video) :

https://www.youtube.com/watch?v=RtDE1WfJqDw

Against TT RS stage 1:

https://www.youtube.com/watch?v=XLKCopvPDPM

Against 502 hp URs4:

https://www.youtube.com/watch?v=SwBn8nC3Ljk

[bn-01-wso]

Nice looking car you have there. I saw it on youtube some time ago when it had a compressor. Here is my old setup 10vt with catcams and precision 5858

https://www.youtube.com/watch?v=JvvBMZ0R6h4

[Bowie69]

Figures at the wheels?

[Thuppu]

Reallt nice looking coupe.

What about the superchargers, was it twincharged or only supercharged?

[quattro-nick]

i think you need a smaller exhaust housing for your turbo,very laggy if you see on the dyno grafic

[simon20vq]

Nice car and good working on the conversion

[tbiro]

Yeah, that was the supercharger project. Nice powerband, but low horsepower at the top(max 207hp). I sold the full kit at good price.




What was your spec? Why sold it?

Nice looking car you have there. I saw it on youtube some time ago when it had a compressor. Here is my old setup 10vt with catcams and precision 5858
https://www.youtube.com/watch?v=JvvBMZ0R6h4

[tbiro]

claimed to gtech at crank.

Figures at the wheels?

[tbiro]

Yes, it's totally dead at low rpms, but I have huge problems with EGT. It can reach 950 celsius long period WOT(maybe too small diameter?). My manifold cracked too. Any advice?

I think this type of turbos are laggy(it from a bus, big axle etc) and I have a stock camshaft.

i think you need a smaller exhaust housing for your turbo,very laggy if you see on the dyno grafic