الموضوع: فلتر هواء رياضى كربرادتير

الفكرة دي لقيتها علي منتدي رينو و أعتقد إنها أرخص طريقة ممكنة لعمل فلتر رياضي
Self-made direct induction. I found this method wandering somewhere in the net and decided to check it out. Our friends at Renault 19 World also describe it as the way "to make your car blow the dust", which is really the truth!!!
I have immediately applied it to my R11 and it really works giving you nice performance increase and wonderful sound.
So - let's do it!
The method is F2N and C1E, C1J (non turbocharged), C2J compatibile - the requirement is to have the oval air filter box sitting on the carburettor (we haven't tested it with C3J single point injection).
The idea is simple! To replace the original air filter box cover, with a self-made cover which will cause the whole stuff behaving like a direct induction kit.
1. You'll need a piece of metal plate (2mm thick), wood ('bout 6mm thick) or plastic (2-3 mm thick)
2. Remove to original air filter box cover - don't let any dirt getting in your carb.
3. Remove the air filter, and place it on your metal plate/wood/plastic
4. Draw a line around the air filter, and cut out the oval-shaped plate - it should be 1-2cm bigger than the air filter
5. Find the cover mounting screw(s) - one in C engines, may be four in F engines, and put some lube on it's top
6. Place the air filter back in air filter box, and your oval form on air filter - it should cover it in 100%.
7. Drill the hole(s) in place where the lube sticked to your plate (6mm should be enough)
8. Clean your "cover" and place it in the air filter box - fasten it and see if it fits tightly with the filter, if not - remove the cover, place some lube on the contact surface, and fasten it again. If it wont help you may do the following:
a. C engines - drill the larger central hole - so the plate center could be fastened deeper;
b. All engines - take the window seal (a rubber one) and place on your new cover exactly where the air filter surface contacts with your cover - this should help in all cases.

That is all - 'bout 20 minutes of work and really good result - so assemble the whole stuff back, hit the road, press the pedal to the metal and feel the difference !!!

Self made direct induction kit (F2N engine). Courtesy of R19 World.