Modified windscreen spraybar

[white exec]

Too windy today to crawl under to fit new rack gaiters, so decided to mod the spraybar instead, as it was a job that could largely be done in the workshop.

Even though the original loop spraybar had all its holes clear, and the pump was delivering ok, the net result was that the upper portion of the wiper blade/screen wasn't getting wetted properly.

So, decided to follow an idea here, and make up a spray-tube that ran the complete length of the wiper blade.
Made in 4.5mm OD black polythene (irrigation) pipe, and a couple of tee-pieces.
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Feed taken from the original wiper-shaft rubber pipe, and along the wiper arm:

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Used the two original clips to carry the 4.5mm tube to a couple of tee-pieces (no elbow handy) at the centre of the blade:

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New 4.5mm spray tube goes full length of the blade, and is stopped off at each end with a small screw. Attached with a few very small cable ties. Six holes (0.9mm) along the length of the tube:

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Wash is delivered as six tracks direct to the screen. It'll do for the moment!

[white exec]

PS...
Working well, but flow from the wiper shaft rubber tube only producing a 10cm fountain.
As described, found the steel tube/nipple clogged with lots of soft rust. Cleaned out with a 2mm drill and a straight length of wire.
Nipple now delivering a 2m squirt, and screen really well wetted by the six jets.
Brownie points all round.

One more small job to do is to connect the two reservoirs - 4mm banana sockets at the ready.

[TizzyD]

Nice mod! My spray loop is only delivering water to the upper half of the window at the moment, probably just clogged holes but always looking for a better option, might have to give this a go when I've got some spare time

[David]

Interesting mod. The spray bar didn't work on my car, so I fitted actual spray jets out of a fiat into my scuttle panel. IIRC, they just slotted straight in without modifying the car in any way & they look like they're supposed to be there.

[white exec]

I had ordered a couple of tidy twin spray jets (just arrived), in case the spray bar experiment didn't work, so they remain a good fallback. The dramatic improvement was cleaning out the shaft tube.