2.8 air filter box. Replacement or Alternative?
Discussion
Having wrecked my air filter box lid with an Easy Start flaming backfire (unfortunately no video) the repair is functional but not pretty, & I can't seem to source a new one........so I was thinking of alternatives. I've seen pictures of custom Capris showing cone filters on the Bosch system air intake
Had anyone done that for a 2.8 cologne engined S1
Any pictures or sources of custom bits would be of interest cheers
Had anyone done that for a 2.8 cologne engined S1
Any pictures or sources of custom bits would be of interest cheers
Not sure about this tbh.. if you have the mech injection with the air box then i believe you need the top for it to work.
On my old golf gti we put a K&N in and driled large holes to let more air in the front of the box..
Ive not seen a cone on this system and the panel filter will flow better anyway.
If you have EFI then yes a pair of cones can be fitted with ease.
Got any pictures?
Cheers
Damian S3
On my old golf gti we put a K&N in and driled large holes to let more air in the front of the box..
Ive not seen a cone on this system and the panel filter will flow better anyway.
If you have EFI then yes a pair of cones can be fitted with ease.
Got any pictures?
Cheers
Damian S3
Yes it is the mechanical system but as V8 Green indicates it is a big box about 50 mm tight behind the fan on the hot side of the radiator, just where you want the air to flow
As a long term S1 owner I know anything to keep it cooler in hot weather is a plus.
(Hence I have installed a fuel cooler, and have wrapped the exhaust down pipes and the fuel lines right from the tank. I have also diverted the fuel lines as far away from the exhaust as possible)
I was thinking of a flat face of aluminium instead of the lid with the filter in and hose or hoses out to the side/s to K&N type cone/s in the cooler air around the wheel arches.
This could also give a bit more space for airflow out from the hot side of the rad.
As a long term S1 owner I know anything to keep it cooler in hot weather is a plus.
(Hence I have installed a fuel cooler, and have wrapped the exhaust down pipes and the fuel lines right from the tank. I have also diverted the fuel lines as far away from the exhaust as possible)
I was thinking of a flat face of aluminium instead of the lid with the filter in and hose or hoses out to the side/s to K&N type cone/s in the cooler air around the wheel arches.
This could also give a bit more space for airflow out from the hot side of the rad.
its been a long day.
The airbox is under that 'big rubber cap' AND the fuel metering head. It is very important that it is airtight between the filter and the air meter valve. You could probably make a box in alloy and seal it, I doubt if the shape would be crucial to the air flow. You could run the air intake to the front of the car (it is currently low down inside the chassis near the front near side wheel) but you cannot move the airbox because of the injector pipes from the fuel metering head.
The car shown,( Dave's) is VERY non standard but the standard air box is still there but with the air control valve cover (big rubber cap!) turned round about 100 degrees. You just cant see the airbox on this pic.
The car shown,( Dave's) is VERY non standard but the standard air box is still there but with the air control valve cover (big rubber cap!) turned round about 100 degrees. You just cant see the airbox on this pic.
Lols that airbox on eBay may be the way to do then you can modify your existing one (assuming the bottom is intact...
Not sure you gain much extending the inket i would just open the box sone.
You can get air temp meters on the bay cheep so you can monitor inlet tenp. I did this on my cosworth and when moving these were always around the abient temparature so not much to gain. Ubless you want a mild ram air effect..
Damian S3
Not sure you gain much extending the inket i would just open the box sone.
You can get air temp meters on the bay cheep so you can monitor inlet tenp. I did this on my cosworth and when moving these were always around the abient temparature so not much to gain. Ubless you want a mild ram air effect..
Damian S3
DamianS3 said:
Lols that airbox on eBay may be the way to do then you can modify your existing one (assuming the bottom is intact...
Not sure you gain much extending the inket i would just open the box sone.
You can get air temp meters on the bay cheep so you can monitor inlet tenp. I did this on my cosworth and when moving these were always around the abient temparature so not much to gain. Ubless you want a mild ram air effect..
Damian S3
Sorry Damian, the way the airflow relates to the injection is COMPLETELY different on the S1. Totally agree with Richard Kitchen, mess with airbox and you will mess with the metering which is incredibly sensitive already.Not sure you gain much extending the inket i would just open the box sone.
You can get air temp meters on the bay cheep so you can monitor inlet tenp. I did this on my cosworth and when moving these were always around the abient temparature so not much to gain. Ubless you want a mild ram air effect..
Damian S3
greymrj said:
DamianS3 said:
Lols that airbox on eBay may be the way to do then you can modify your existing one (assuming the bottom is intact...
Not sure you gain much extending the inket i would just open the box sone.
You can get air temp meters on the bay cheep so you can monitor inlet tenp. I did this on my cosworth and when moving these were always around the abient temparature so not much to gain. Ubless you want a mild ram air effect..
Damian S3
Sorry Damian, the way the airflow relates to the injection is COMPLETELY different on the S1. Totally agree with Richard Kitchen, mess with airbox and you will mess with the metering which is incredibly sensitive already.Not sure you gain much extending the inket i would just open the box sone.
You can get air temp meters on the bay cheep so you can monitor inlet tenp. I did this on my cosworth and when moving these were always around the abient temparature so not much to gain. Ubless you want a mild ram air effect..
Damian S3
All i can say is that on my golf this worked just fine and released a couple of bhp so long as you only mod below the panel filter obviously..
Google will find many examples of this mod.
Here's one http://www.auto-tat.co.uk/Escort%20Upgrades/Chapte...
Here is a video of a custom box bottom..
https://m.youtube.com/watch?v=P9sHGT-A2zg
Best of luck however you go..
Damian S3
Edited by DamianS3 on Tuesday 10th July 20:07
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