Audi 200 Trans am & 90 IMSA/GTO

Audi 200 Trans am & 90 IMSA/GTO demo at 25 jahre quattro in Ingostadt 2005

Category:

Autos & Vehicles

Tags:

• quattro
• Audi
• 200
• Trans
• am
• 90
• IMSA
• GTO

[MrHyper728]

the imsa has a 20 valve and the trans am has a 25 valve but which one sounds nice?

[grondstra]

@MrHyper728

The Trans am was a 10valve.

The 25valve was a nother engine, some say that the Audi 200 Talladega had that cylinderhead. And others say that it was the Audi S6 for highspeed runs on Nardo

[dnumnuts]

german engineering rulesssss!!!!!!!!!!!

[superfast30]

Those 2 cars are legends!

[MrHyper728]

@grondstra the audi tallaga did have the 25v and set the world record of over 400 kph theres a vid of that on you tube

[arrowsracef1]

i had loads of audis during the 90s, inc 80, 90, coupe gt, 100, 200t, 200quattro, just sold my 2001 nissan terrano and gone back to a mint cond classic 1990 audi 100 2.0e cos there the best, long lived, bullit proof, car made during the last 30 years, and the 5 pot motor is awesome and will do over 300k with regular servicing. car of the century?

[Quattroowner]

@MrHansdampf123 da pfeift kein turbo , was du hörst ist das popoff ventil das anspricht wenn die drosselklappe geschloßen wird ....

[MrHansdampf123]

da pfeifft der turbo

[superfast30]

Many thanks for the detailed explanation..which LM sports cars have your worked on?

[KeeperOfTheKitten]

To further explain, the WG in these cars will usually be a diaphragm type with a fairly light spring, although these might be stiffer than normal, and air bleed to the lower side of diaphragm causes the WG to open. This is either manifold bleed or solenoid controlled bleed from compressor side (the LM cars actually had a pump for this). The WG opens, reduces pressure to the turbine (hot side) which gives a corresponding reduction to compressor side. The exhaust for the WG can be totally separate

[KeeperOfTheKitten]

Saxosmasher you are correct about the separate tower WG - but it's not to prevent turbo stall or reduce lag, the WG is to reduce boost pressure. Blow off valves (whether atmospheric or recirculating) are to reduce turbo stall. The same setup is true of my car and all the turbo Le Mans cars I worked on.

[saxosmasher]

The wastegate isn't even on the turbo. Its bolted onto the the exhaust manifold and it recirclulates exhaust gas back into the the exhaust manifold to keep the turbo spinning to reduce the turbo lag.