Rallycross VR6 engine tuning

[rallycross vr6 0]

H guys,

I own a VR6 rallycross car which i use here in ireland. The car is currently running coilovers, eibach anti roll bar kit, polybushed, bigger brakes, custom exhaust system, qauife lsd, helix clutch. I am now interested in getting as much power out of the car as possible but wish to keep it N/A. Can any please direct me in the right direction to achieve this? Or any recomendations.

Thanks, Darragh Morris

[cabrioman 6]

ur looking at cams 268s , air filter, inlet mainfold schrick and a re mapp should see u to about 200-220 bhp maybe a bit more with the right mapp ... can also go for a big valve head all depends how deep ur pockets are mate

[rallycross vr6 0]

And what about a programmable ecu?.Are these available easy?...Im looking for as much as i can out of the car so what ever price tag comes with that...Some one mentioned to me about running trottle bodies has this been done before and if so how beneficial?

[cabrioman 6]

throttle bodies have been done once or twice ....

http://www.jenvey.co.uk/

http://www.bildon.com/catalog/DetailsList.cfm?ID=10.010.021&Nav=6&SubNav=66

just a few choices ....

[lowvr 0]

3.0 high compression build

maybe combine that with throttle bodies

and better suited cams

then get it all maped and you could be onto a winner

i remember a thread over on vortex where a small firm did exactly what you are trying to do, keep the vr n/a but tune it as far as possible

have you also considered direct port nos

[MaidenVR6 26]

Hight power n/a VR6 is not easy.

A friend did 217whp on his, and that was a 15000USD 3.1 L engine. Its nuts.

The VR6 engine is NOT that effective at all. Its not like BMW

[FishWick 21]

Yeah the 12V VR6 just hits a flow brick wall at around 250 crank power, no matter what pistons and crank throw you use.

Best power normally aspirated would be the 24V, either 2.8 with R32 head or straight R32. Stick cams in it, remap the VVT and increase the rev limit and you should be knocking on the doors of 300 crank power. You will never close to that from a NA 12V :-)

If you want to stick to 12V (it is a stronger engine than 24V), CCH heads are nice though - http://scch-heads.com/viewhead2.php?id=30

[rallycross vr6 0]

Thank you to all that have replyed back on this matter. The info i have received is not what i was looking for butthats life. I am now considering a turbo conversion for it but in rallycross we race on on mixed tarmac and gravel track and i was wondering what kind traction does a turbo vr6 have?

[ingham 5]

best mod would be lower final drive to start with, but if you are going turbo then 4 wheel drive is a worth thinking about , vw did make a vr6 with 4 wheel drive

[MaidenVR6 26]

Thank you to all that have replyed back on this matter. The info i have received is not what i was looking for butthats life. I am now considering a turbo conversion for it but in rallycross we race on on mixed tarmac and gravel track and i was wondering what kind traction does a turbo vr6 have?

Quaife/Peloquin/Wavetrack LSD is a must.

[rallycross vr6 0]

Unfortunatly i cant use 4 wheel drive as it would put the car into a higher class against my team mates 650bhp subaru impreza. The car has a qauife lsd fitted at the moment and i am currently doing a deal for a 6 speed sequential dogbox.