200TDi Exhaust gas flow

[minivin]

Just out of interest, is there much in the way of gas flow considerations on such diesel engines as 200TDi's et cetera, such as when tuning V8's and other petrol's (4 into 2 into 1 and other such design philosophies), or does the Turbo decide such issues as back pressure et cetera and exhaust bore and length become minor issues?

Never dealt with any tuning on Diesels before

[ROGUE TROOPER]

Dont do it!!

Ok V8 dont like water much and will cost you £££ in fuel............ but the grin factor wont be the same as a Diesel

[minivin]

maybe you need to fix your ignition problem and then let me have a play with it, it may seal the fate, of a V8

[ROGUE TROOPER]

Point taken

[white90]

bore has some bearing on the performance,

I've removed all bar one silencer and fabricated the rest in the standard dia tube.

not obtrusive(noise wise) and keeps out of the way offroading

[minivin]

bore has some bearing on the performance,

I've removed all bar one silencer and fabricated the rest in the standard dia tube.

not obtrusive(noise wise) and keeps out of the way offroading

that's interesting, sounds to me like the turbo provides most of the back pressure and the exhuast back-pressure design is very minimal, so your one silencer is just to "silence". hmmmmm

[Bush65]

Large bore all of the way from the turbine outlet to reduce back pressure. Only minimal silencing is required because the turbine reduces a lot of the noise. The greater the pressure difference between the turbine inlet and outlet, the better the turbine will perform.

With steam turbines, it is common practice to use condensors to create vacuum in the exhaust, and increase the power.

Yes the turbine does create backpressure. Smaller turbines create boost earlier, but cause more backpressure at higher revs, restricting engine breathing until the wastegate opens.

[minivin]

Large bore all of the way from the turbine outlet to reduce back pressure. Only minimal silencing is required because the turbine reduces a lot of the noise. The greater the pressure difference between the turbine inlet and outlet, the better the turbine will perform.

With steam turbines, it is common practice to use condensors to create vacuum in the exhaust, and increase the power.

Yes the turbine does create backpressure. Smaller turbines create boost earlier, but cause more backpressure at higher revs, restricting engine breathing until the wastegate opens.

ah yeah, I get it now!