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cone filter and water ingestion.

JamesO

JamesO

New member
Today whilst traveling up a very wet M40 my car pulled that much water into the airfilter it died at tickover and refused to start.
Looks like i got away with it as she's now running fine after recovery to the services and a good drying out.
What I think happened was the crank pulley fired water up onto the bottom of the filter as it was soaked (foam filter), possibly made worse due to the toothed wheel I have fitted on the end of the crank. That or water coming through the intercooler/Rad soaked it.

A cut up plastic bottle is now around the filter. The car did another 200 miles in pissing rain without issue

Its ironic as I was going to move the filter to behind the headlight and go full megasquirt but decided not to for the journey to ensure it was reliable.

Just a warning to anybody not running the standard airbox really. Also I'm wondering if a mesh type cone filter would let the water straight into the intake rather than acting like a sponge.
 
With the oiled paper type filter on my vittesse maf (on the coupe) the filter is behind the headlight. When it had been parked in heavy rain it would be a pain to start and run initially due to a soggy filter restricting the intake. I fitted a small 'divertor' which stopped it happening - it was cut from a plastic file and stuck to the leading edge of the bonnet - just visible in the pic below.
splitter.jpg
 

ORIGINAL: 944Turbo

With the oiled paper type filter on my vittesse maf (on the coupe) the filter is behind the headlight. When it had been parked in heavy rain it would be a pain to start and run initially due to a soggy filter restricting the intake. I fitted a small 'divertor' which stopped it happening - it was cut from a plastic file and stuck to the leading edge of the bonnet - just visible in the pic below.
splitter.jpg
Click to expand...

Cunning, will make sure I do the same when I move the filter from behind the rad.
 
Put a hydro shield, specifically designed for cone filters, and call it a day.
 
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