Bobby Singh's Audi A4 3.0 TDI Project car

[ali1]

great thread Bobby, very skilled man

[Bobby singh]

Went farming today haha




The yellow S200v is forsale - I've put it in the right section

[Bobby singh]

December 2017

First internal engine modification - uprated valve springs. What a nasty job this was but had to be done in preparation for my future plans.

Objective was to install springs to ensure valves remain closed (without removing heads):






Ended up breaking the yellow guide off for timing chain from the RHS - German ebay saved the day though




Its always nice to hear the engine start after major works

Engine rev's much nicer in the top end now - Im convinced there was valve bounce previously.

December 2017

Rear wiper motor

It seems like another common problem rear wiper motor leaking and ruining the inside of the motor making it run continuously:

Managed to locate a Valeo branded (oem)





Cheers
Bobby

[Bobby singh]

Hi decided to sell my Hybrid S200v as most will know it made 440hp / 900nm. I've ran this unit for 30k without a

single issue. The unit is like new zero play in the shaft. Compressor wheel and turbine are mint.

Includes:

S200v hybrid
CW 70/50
TW 63/56

with modified compressor housing - anti surge and outlet perfectly welded for VAG 3.0TDI engine. Compressor housing

has 2260 end so fits stock hose.

Hella Actuator modified with stop screw and rod

Oil feed pipe with stock VAG 3.0tdi end

Oil return fitting installed on turbo and block side included

Speed sensor included

Modified VAG 3.0 TDI manifold to allow plug and play (has boss for EGT and EMP)

90mm Turbo Intake pipe included with reducer hose

Spool - makes 2 bar boost by 2600rpm

Pictures:



















Price is £1500 plus postage or Collection available from Old Windsor (near Heathrow)

Any questions drop me a PM or email BobbySinghRacing@outlook.com

I can tune your car too once installed if you can bring me the car (we can discuss this offline).

Cheers
Bobby

[Bobby singh]

January 2018 505hp / 980nm

Well guys managed to hit my target of 500hp

So what’s changed? As you know my s200v has been put up for sale to make way for unique turbo.
EFR7670 with S300v housing its a watercooled roller bearing turbo with really nice wheels -

CW:76/57
TW: 70/61, gamma-Ti alloy, lower density (and thus inertia) than conventional Inconel alloys



I've been driving for approx a month tuning it and trying to get it right for a power run. Its been task to balance spool Vs surge - for example more spool is possible but then get surge so the short term workaround is to run less boost. Long term would be to leak off some air via ECU controlled valve.
So yes it does have lag but it still have same torque as a stock 3.0tdi @ 2.2k in its current form.

Dyno

We turned up on a BMW day









Smoke test Video:

Audi A4 3.0 TDI 505hp 980nm Smoke test - YouTube
captured by Jay

The turbo is really a monster and still has more scope, but I'm out of fuel. I guess with larger injectors 550hp would be on the cards.

EGT's - 900deg
Stock engine (apart from valvesprings)
Stock exhaust apart from downpipe
Stock gearbox
No smoke


Cheers
Bobby

[Scott K]

Incredible work. You are committed!!

[Whippy53]

Well done sir, good job. Pleasure to watch your progress with this.

[Bobby singh]

Thanks for the support 👍

[Gazwould]

Still not as fast as a BITDI !

[Whippy53]

Still not as fast as a BITDI !

O RLY? I musta just missed the post where he gave out his speed. I'll go back and look. Still, he can put that right with liberal dollops of two stroke.