My Audi S2 600Hp+ project 56k warning

[terrybullwon]

[terrybullwon]

These are for Jamo and his exhaust wooes....

[Error404]

Looking good mate, bring on the Jan 2010 fuel crisis

[Palma rs2]

Hi

I see you have the oil cooler plumbed with the feed & return at the bottom, are you not worry about the oil cooler draining, or have you done something to stop that as i have seen a lot of other cars plumbed with feed & return at the bottom

Project is looking very good

Thanks

[terrybullwon]

The car is being mapped on January the 10th.

Some people have already named this day

I have done a few more bits and bobs,

Fuel System in the boot (missing one hose)


Exhaust housing tapped for EGT probe




Intake connected



I think i will change to a 4x9 AEM dry flow filter.

Spaghetti junction of -12 oil lines


Oil cooler

[terrybullwon]

hello james,

do you have finished you exhaust allready? like to see the twin side mufflers. question, why not an 4" all the way and put it under the rear subframe.

hendrik

Hi Hendrik,

The exhaust is finished. There is no way that you you get a 4" tube between the diff and the body of the car. Also i would worry that the 4" would hit the floor.

Mine now goes like this.

3.5" hot side out let - 4" down pipe - 4"flexi 40cm long - to twin 3" - middle section mufflers - straight with flexi sections - last box - side exit by the rear wheels. And external waste gate pipe.

I deleted all the photo's i had of it spotted together i only have these and have taken no new ones.

Seen something similar done by Meerkat, 4" into 2 x 3" side exits, looking at the pic it doesn't look as tight as Terrys.

hello james,

do you have finished you exhaust allready? like to see the twin side mufflers. question, why not an 4" all the way and put it under the rear subframe.

hendrik

[quattro84]

It's politrope to be precise, something like p(V^n)=C where n=1 or n=Cp/Cv
To be precise:

It's a temperature ratio based on adiabatic conditions, (no energy loss through fases) , enthalpy (internal energy), and overall efficiency

To make it easier: Temperature ****s it up double time.
Air density changes, so air mass at inlet changes
Pressure ratio & efficiency of a compressor is influenced by the temperature of the inlet charge. So discharge air mass will be lower. Compressor surge is measurable in form of a temperature rise!

Gazza's dillema: if you put 100kPa in with an pressure ratio of 3 you'll get a higher value then if you take 50kPa. The N/A engine would only get that 100 or 50kPa.
That's why turbocharging always gives a better VE than N/A engines even on higher altitude. Bad thing is that with lower pressure the danger of overspeed occurs.

[repo]

Summary: pV=nRT

[GazzaG60]

sounds logical. and why the vw pikes peak golf went 2 x1.5t IIRC instead of 1.6 NA. altitude mean less oxygen so ram it in (GLC speak)

i looked into turbo mounting a hks filter. it wouldn't fit in the bay. in the end im more than happy with what i was given.

must say i only notice very slight differences

[lind4hl]

http://hyperphysics.phy-astr.gsu.edu...ic/idegas.html

To put is simply the hotter the air the less oxygen molecules are present in a given volume.

It's why turbo cars perform better in winter!

Couldnt say it better myself..

[Jamo]

its interesting. im not sure but go with the general thought that a colder place is better.

i recollect that maybe physics states that when commpressing air it makes on difference so long as its initial heat is lower than the compressed heat. i may be wrong though.

http://hyperphysics.phy-astr.gsu.edu/HBASE/kinetic/idegas.html

To put is simply the hotter the air the less oxygen molecules are present in a given volume.

It's why turbo cars perform better in winter!

[lind4hl]

gaah, got an really good way to explain this, in Swedish...

[GazzaG60]

its interesting. im not sure but go with the general thought that a colder place is better.

i recollect that maybe physics states that when commpressing air it makes on difference so long as its initial heat is lower than the compressed heat. i may be wrong though.

[lind4hl]

Makes a huge difference, mounted off the turbo your pulling in hot air and you'd need a cool air feed. The solution above kills two birds with one stone.

Normal people uses rifles