3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
Bought this off Ebay here . (Top right). It cost £67 + postage £27. Clearly it will fit in width and height. Depth may be an issue as it's 76cm as opposed to 60cm (Allard)..I will need 2 short right angled pipes
diagram of pipework
....3 months later finally past the thinking stage ....I'll see how the car likes living with this slightly more restricted airflow for a while before repositioning the old fan currently upfront to its new home behind the rad. Trimmed the new cowling which originally had the same perimeter profile as the cowling behind the rad with a jigsaw to fit snuggly one inside the other ... then bolted them together like this
took the old fan and pwm controller unit off its old front mounted frame and mounted it in the new adapted cowling (used some more bolts with spring washers to secure very firmly) behind the rad. im gonna run it like this for a week or two to make sure it doesnt overheat vibrate etc. was a bit worried it would vibrate too much as the old fan frame is actually cushioned with rubber grommets where its bolted to the car. but it runs smooth vibration free as before & aircon no change there either so looking good touch wood
new fabricated bracket painted black
old intercooler out
there she is
left side pipework
sliced brake duct left side
brake duct back in place
same from the front
right side with spliced brake duct ...forms part of the plastic structure and rigidity of the wheel arch so cannot be removed completely
So now I need misters .... these provide a more complete coverage imo and use less water. the surface only needs to be wet not dripping i think. These make a nice wet circle about 40cm in diameter when sprayed from a distance of approximately 15 cm ...im gonna get another one (so one either side) then a headlight washer motor some tubing and a reduction pipe and i think im sorted
this cost 4 euros (6 dollars) garden seedling mister
ill use just the nozzle ... really a beautiful fine mist enough to wet the entire intercooler with a two second press. if you spray it on your face youre wet but not dripping. very refreshing!
M Tech tri colour stiched steering wheel with paddleshift linked to steptronic
CCF angel eyes
Modified MAF (drilled)
oem M3 autofold mirrors with armrest switch (in progress)
Siemens BIT II phone installation (in progress)
no worries. the advantages are fourfold..
1. marginally better fuel consumption
2. lower stress on engine due to reduced thermal load
3. better performance due to a denser charge of air and O2 . I haven't measured this though.
4. more scope to increase boost (and performance ) because of ^
i.e an increase in boost will increase the speed of the turbocharger, but the air temperature rises rapidly offsetting any advantage . iow compressor runs outside its speed vs boost efficiency envelope.
i haven't checked anything on a rr but it is much improved and i have yet to get it remapped so advantage 4 as yet unexplored
Back with a question: any chance of keeping the AC fan in front of the intercooler ? My 6 cylinder engine is not leaving any room under the hood. Or, have you tried running without the fan and see how it does ? (there is a second fan behind the radiators anyway, from the engine cooling system).
you could replace oem pusher with a couple of spals or similar as pushers. no room for original and dangerous to cut cross member. spal fan would be less sophisticated in terms of activation as it would not be pwm controlled or linked to the dde/dme ...like this
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