718 drain holes

[matthandley]

After Googling and search all the main forums, I've not managed to find any description of where the 718 cayman drain holes are.
There's plenty of 981, 986 and 987 posts and diagrams.... but the 718 seems different - am I missing something?

This is best description I can find, but is for a 987:
https://rennlist.com/forums/987-forum/1216614-cleaned-your-drains-lately.html

 

[Motorhead]

Matt,

The 718 body fundamentally is the same as that for the 981, so that should be your guide. Unlike the Boxster, as far as I know the Cayman only has the front drains … at least I’ve never found any rear ones on my 987.2 CS!

Have you tried putting a hose on the screen and looking around the bulkhead and underneath to see where the water’s draining and exiting?

Jeff

 

[matthandley]

Thanks Jeff... I've looked for 981 drains and still nothing helpful: https://rennlist.com/forums/981-forum/1230759-water-drains-on-981-cayman.html

I have indeed put water on the front windscreen cill and can see the water just finds a way through the bodywork.... no rubber drain holes that I can see?

The left and right side, egress the water behind the wheel arches and out from under the side cill - I plan to remove the plastic arch coverings to investigate, but it doesn't look like a tube, just open bodywork.

In the centre, the water just finds its way behind the battery and fuel tank to a gap in the bodywork - but then disappears and I can't see anything coming out underneath (which worries me).

I've attached a photo to explain, with the green arrow the real mystery!

Thanks for any help.

 

[JohnCRS]

I believe they drain from the bottom of the plenum area, under the wiper motor etc. and then run down at the rear of the wheel arch, behind the arch liner, and exit through a hole in the back of the liner where it turns flat against the floor. Sometimes the little pipe that holds the water gets pushed up behind the liner. If you are not getting any water through it may be the hole is blocked in the plenum area. Leaves and crud can accumulate there.

 

[JohnCRS]

Duplicate removed

 

[matthandley]

That makes sense for the left and right draining - I'll try to confirm when I take the wheel arch liner off... those are draining well at present.

It's the middle drain that is the mystery?!

p.s. plenum is as clean as a whistle - the water disappears into the bodywork.

 

[Scrounger]

Freom what I have see while washing the car, the rear drains are underneath the rear spoiler seat and then onto the floor. I don't think there are specific drains. The front ones are up against the front firewall.

Dan

 

[JohnCRS]

It's the middle drain that is the mystery?!

Does it not just drain to the side within the plenum? Sorry, I am away from the car at the moment so just relying on memory. You are probably best to experiment with a watering can. I don't think you are going to do any harm.

John

 

[matthandley]

Thanks for your help, after several litres of water, I think we are getting somewhere for the FRONT....

[ul][*]Front left and right, off windscreen tray follows bodywork down behind wheel arch, no rubber grommet or tube, as expected (see photo with wheel arch liner removed) [*]Front centre, drains through the wiper arm hole and straight through the bottom of the plenum (between bodywork/tank/wiring) which collects in the under-tray and drips out (see 3 photos of front centre water path).[*]The fuel tank drain is straight forward and actually drains through a tube egressing to the bottom rear of the wheel arch (see photo of drain tube)[/ul]Mystery solved, there is only one drainage tube to clear at the front.

Question: why Porsche are charging £464 for water drainage on 718 Caymans?!

 

[JohnCRS]

That is usefull information - thanks Matt.

When we were clearing out my parents house, we found some of those plastic wrapped spring wires that were used to hold up net curtains. They were a valuable addition to the tool store for clearing draiin holes. A compressed air line is also helpful

John