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We'll mount this cooler so the bottom is horizontal: that is slanted in appr atan((70-28)/600) angle. This will clear the hood-hook nicely, and with total height appr 380+70+70=520mm still allow reasonable clearance from pavement or other obstacles. Obviously, air will flow vertically.
Drawing made with European style projection:
This specs is in Hungarian to avoid misunderstandings
- hutofelulet meret kb: 380x600x63 mm
- max: 400x650x70 mm (igazabol a 400-at az korlatozza, hogy a teljes magassagra a 2x72mm-el egyutt max 550-et engedtunk)
- min: 360x550x60 mm
- aluminium csonk cso kulso atmero: 60mm
- csonk perem kulso atmero: kb 62mm
- csonk hossza: amit szokas (gondolom kb. 45..70mm)
- a csonkoknal a trapezmeret nincs megadva, alighanem kb 70..72mm megoldhato (vagyis a teljes magassag kb. 380+71+71=522mm)
- a masik oldalon kb 28mm-re szukul a légtér. Ez persze szintén nem kritikus meret
- a felso csonk a hutofeluletre meroleges
- az also csonk merolegestol elter 5,ill. 10 fokkal, vagyis a sik normalisaval kb sqrt(5*5 +10*10) = 11.2 fokos szoget zar be
- a=85 fok, b=80 fok
- a trapézrajzon a csonkok felénk néznek! Ez látszik az ellipszisek helyzetébol is. (Ha nem dolne az also csonk egy picit, akkor persze ez szimmetria okok miatt mindegy lenne)
S4 intake idea dropped
The current intake has the opening at the rear part of the engine, pointing towards the exhaust (the only worse way would be a counterflow 10-valve ;-) . The S4 intake has the tube at the side (45 degree, going towards a front-mounted charge cooler). Unfortunately, this upgrade would effect:
- the intake (obviously changed to S4 type)
- the radiator (to clear the intake)
- the air conditioner condenser
- the optimal nipples on the charge cooler side tanks
- a few other minor things:
- TPS
- maybe MAT
- BOV placement
Unlike the audi80, in the audi200 it's not possible to rotate the radiator 90 degrees (via horizontal axis) to gain space, because of a strong beam interfering in the bay that probably protects in a frontal crash.
Get boosted first, meausure, than evaluate
Before the final cooler placement is sorted, we decided to evaluate a quick-setup. We have doubts about the performance of the currently mounted charge cooler, but it was easy and cheap to make a tubing using flexible 10bar tubes and a few elbows. This setup should be suitable to measure the performance of the cooler, and to tune upto appr 240..250kPa (1.5 bar boost).
The cooler was washed internally with solvent to remove junk.
The tubes got some heat-insulation to protect them and help keep MAT down.
http://www.vems.hu/gallery/main.php?g2_itemId=100
After MAT and pressure-drop measurements, we'll see if
- this is satisfactory for now, or
- another cooler is justified
- if it's terrible, we can mount a factory charge-cooler while the new cooler is in progress