Heavy rain lately and that plenum

[aguy]

Originally Posted by Busboy

I've heard of this mod before, I believe that where the drain tube comes out of the bottom of the plenum, the tube has a diagonal cut to the end, when you say ' the snip, does this mean the tube is cut more square, and hence has a wider exit for water?

I think you'll find the drains are 'pinched' at the end in a duckbill fashion. Snipping these off creates a wider opening in the drain.

[HarryM1BYT]

Originally Posted by Lancpudn

Edit: It seems not before time too! the missus has just taken the car out of the garage & there's a mound of leaves on the floor where I rodded the plenum.

Its the leaves and other detritus getting in there which causes the problem. Stop it getting and the problem is for the most part solved. Your choice - Jules Mod, gutter guard plastic mesh or foam /sponge strip to seal up the gaps.

I used gutter guard (now a pound in Pound shops), which is an open mesh and it works fine. I would be a little wary of putting any thing in there which retains water, as that can promote body rot/rust.

[Kennyeth]

One member on our forum had a great idea for testing if the Plenums are blocked:
"pour some water into the chamber and watch below to see if it flows through"
if it flows then there will be no blockage, if not then get prodding
Ken.

[T-Cut]

Originally Posted by aguy

I think you'll find the drains are 'pinched' at the end in a duckbill fashion. Snipping these off creates a wider opening in the drain.

Here's the suggested mod (bottom right): http://www.the75andztclub.co.uk/index.php?thepage=howto

I personally doubt the effectiveness of any upper tube modification. If rubbish enters the plenum, it will eventually bung up the floor drains no matter what shape the nozzle on the upper ones. I guess this is why facelift models have the upper drain tube shorter and full bore. The plenum floor drains are always the flooding culprits. The nearside one is easy to keep clear and is sufficient for keeping everything dry. Forget the other one. Or if regularly rodding through is a chore, fit a water alarm.

TC

[Woof25]

Originally Posted by HarryM1BYT

Its the leaves and other detritus getting in there which causes the problem. Stop it getting and the problem is for the most part solved. Your choice - Jules Mod, gutter guard plastic mesh or foam /sponge strip to seal up the gaps.

I used gutter guard (now a pound in Pound shops), which is an open mesh and it works fine. I would be a little wary of putting any thing in there which retains water, as that can promote body rot/rust.

I can tell you harry because the holes in the aquatic foam are large no water is retained and after 3 years nary a sign of rust whatsoever, its simple its effective and easy to maintain but each to his own of course