Shop4Parts - UK's largest online superstore for FIAT and Alfa Romeo parts

Technical What is this for?

Currently reading:
Technical What is this for?

Yellow Peril

Yellow Peril

Patron member
Joined
Apr 20, 2005
Messages
2,748
Points
553
Location
South East
Anyone know the purpose of the item shown as 4 in this diagram (2.4 engine)?

naread.png

In trying to access the bleed valve on the radiator (which sits right behind this) I succeeded in braking it off. I've blanked off the resulting small hole in the hose it was attached to, and nothing untoward seems to have happened.

I'd always thought it was a 'resonator' to cut down induction noise, but it's made no difference to that, and in any case there is a huge resonator box next to the air filter housing (just above the number '8' in the diagram).

Answers on a postcard...
 
yeah thats the one, i installed a K&N pannel filter and re-routed a new cold air feed into the side of the box which now gets its air from behind the bumper in the fresh air, and the removed the old cold air pipe all together and plugged up the hole with a thick rubber bung that i made , but i needed to remove number 8 part because it was in the way? so i just snapped it off??? it has'nt made alot of difference, sometimes i think it has then some times it sounds the same?
 
Erm what makes you think the factory arrangement doesn't give a cold air feed? The inlet opening above the grille points directly into the air the car is driving into. And doesn't an intake low down behind the bumper risk water ingress?
 
its not directly in the path of incoming air? if u look closely, the bonnet shuts right infront of it? thus stopping air being forced in - not by much i must say - but if i had the choice of a nice fresh flow of cool, unrestricted air or stale, luke warm unforced air from a pipe sitting next to a hot radiator in a warm engine bay, then i would choose the former :), water ingress won't be a problem either because the amount that it would be subected to is minimal, and if you think about it, caterams and westfields that use webber DCOE's have thier filters sticking out the side of the bonnet in total freash air??

don't get me wrong, its no performance inhancing mod, just in my opinion, a better way of getting nice air into the air box - it certainly has'nt made any difference in the way it performs but it certainly has hinderd it either? and you never know, i may be even saving like half a mile per gallon :D . and as a bonus, by removing the factory pipe, i've freed up a bit of space for an oil catch tank (y)
 
gadgemyster said:
and as a bonus, by removing the factory pipe, i've freed up a bit of space for an oil catch tank (y)
Click to expand...

Good move! I've been really pleased with my OCT. Changed spark pugs recently, and they now look that perfect biscuit brown colour, whereas before the OCT they were black and semi-oily looking. So the OCT is clearly doing its job of keeping the cr*p out of the combustion chamber...
 
gadgemyster said:
which OCT are you using again?? if i remember, you had one from america which had something in it to help with the vapours? the ones i've seen are just an empty can which to me does'nt appear to do anything because it would look like the vapours would just get sucked back in to the engine?
Click to expand...

Here you go:

http://www.saikoumichi.com/

Avoid empty tanks like the plague! There's nothing to stop vapours going in one hole and out the other. They are rubbish.
 
gadgemyster said:
ooooooo i like these!! they have a removable filter? :). what about buying a cheap empty syle OCT and puting some kind of filter in there to stop the gases going back into the engine? like wire wool? or those metal scouring clothes you get from a supermarket?
Click to expand...

Noooo don't do it! I've read nasty stories of the wire wool breaking up and finding it's way into the engine...:eek:
 
You must log in or register to reply here.

Similar threads

Dionisis13
  • Question
Technical What is this?
Replies
0
Views
381
Dionisis13
Dionisis13
Dionisis13
  • Question
Technical What is this connector
Replies
1
Views
576
Dionisis13
Dionisis13
VladAndrei
  • Question
General What navigation is best
Replies
0
Views
268
VladAndrei
VladAndrei
Igli
General What's this part?
Replies
2
Views
353
Ralf S.
Ralf S.
L
Technical How to fix this oily parts :(
Replies
3
Views
391
lafleur
L
Back
Top