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Rear windshield sprayer

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Old 08-15-2010, 08:50 PM
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atb
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Default Rear windshield sprayer

Sorry if this is an enzo, anyone seen this before?
Looks like a stock headlight sprayer mounted on the rear hatch.



Old 08-15-2010, 11:03 PM
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Imo000
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I never seen one before.
Old 08-15-2010, 11:15 PM
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cpayne
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This guy added two taken from the front system power was and put them in the rear
http://www.moore-fun.net/928-Electri...ar_washers.htm
Old 08-16-2010, 12:20 AM
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Jim M.
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This guy added two taken from the front system power was and put them in the rear
http://www.moore-fun.net/928-Electri...ar_washers.htm
That guy is Allen, our electrical guru. He has done a bunch of well executed mods to his 928. I'm sure he will chime in on this thread.
Old 08-16-2010, 12:31 AM
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atb
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I believe this was an '84 that we saw at a local swap meet.
The owner said that it has never been functioning since he's owned the car. He did trace the tubing back to the sunroof motor, but that's as far as he got. He doesn't know where the switch is to activitate it, but he did state that there was a button under the pod. I assumed that was for the intensive washer, but did the '84 even have one?
Old 08-16-2010, 10:02 AM
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AO
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Chuck Z's old GTS had a factory rear sprayer but it looked more like the kind on the hood and it was located right near the window trim of the hatch.
Old 08-16-2010, 10:24 AM
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9two8
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I was just wondering if that car had been fitted with a phone aerial sometime in it,s past.., and they took it off and replaced it with H/L jet washer.

Can,t see a real need for a rear washer, due to the angle of the screen.., obviously Porsche did,nt either.

Ken
80 928 S
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UK
Old 08-17-2010, 11:35 AM
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Alan
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Actually Porsche did fit some as custom request work. In Phoenix due to our dust storms mine is actually quite useful for cleaning off dust accumulated while parked. You are right that its not likely to be needed much when driving...

In this instance it seems it may have been used just to fill a hole with a Porsche part. Its not a great location for it and those nozzles are designed for quite a power jet...

I used the smaller non-heated windshield jets and located them where it was most obvious - however then your supply tubing has to negotiate the hatch hinge & seal.

I can tell you that routing the tubing has some other challenges too. Mine has its own tank and pump and controller - easier because a GTS doesn't have the intensive system - so I retrofited one and repurposed it... lots of work - used maybe 5-6 times per year (so certainly dubious value - esp. most other places). I do also have a larger rear wiper - which I really like. When it rains here - IT REALLY RAINS and this is a great visibility aid for then and also for clearing all that dust off the rear from the dust storms.

Alan
Old 08-17-2010, 07:23 PM
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Brent
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From the Exclusive book 1991.
Old 08-17-2010, 07:34 PM
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Landseer
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On the 84, the high-volume centrifugal that is used to power the headlight washers could be re-routed from the bottom of the washer tank, through the body, along the inside rocker, and to the roof area in parallel with the hatch harness.

I have not done it, but I have rerouted it on one car.

Instead, I routed the hose to the base of the front windshield area to allow a flood coverage of the windshield directly from the hose. Ghetto, but hidden. It moves a lot of fluid.
Old 08-17-2010, 11:28 PM
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Alan
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Originally Posted by Landseer
On the 84, the high-volume centrifugal that is used to power the headlight washers could be re-routed from the bottom of the washer tank, through the body, along the inside rocker, and to the roof area in parallel with the hatch harness.

I have not done it, but I have rerouted it on one car.

Instead, I routed the hose to the base of the front windshield area to allow a flood coverage of the windshield directly from the hose. Ghetto, but hidden. It moves a lot of fluid.
I have done it - much as you describe - of course the bigger challenge is getting through the firewall and into the passenger cabin - you need to drill a new access hole for it somewhere. The drivers side handbrake cover/cable cover is the best way to get to the B-Pillar and up to the roof area.

I would not use the headlight washer pump for this - its just too powerful. Since you must route in the cabin, you don't want any blowouts anywhere. The small nozzles don't flow that much (and don't really need to for this application).

Alan



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