About our 911 small washer tank upgrade

[classicretrofit]

The Classic Retrofit intensive washer bottle/tank kit is for the G Model (Impact Bumper) Porsche 911 models made between 1974 and 1989.  It allows you to replace the large and heavy tank with the smaller tank used on the Porsche 996 and Boxster. This modern tank has a direct mounted pump and level sensor. We do not provide the tank or pump with this kit but they are plentiful on eBay and can be bought for around £30.       

The kit contains custom brackets for securing the tank to front wing support panel behind the front wheel.  It also contains a plug and play wiring harness that connects to the original pump wires.   The new sensor can be connected to the fuel tank low level lamp to give a dual function (either low fuel or low washer fluid).

Kit contents:

• Washer bottle rear bracket and top support bracket
• Wiring harness for pump and level sensor
• Tube for connection to filler.
• Fasteners.

The new tank can be filled from the filler inside the fuel flap as before.

Please note that larger wheel and tyre combinations and lower suspension may reduce the clearance to the tank.

Download Install manual here

 

[Eddie]

So, I understand I provide the bottle and pump. Question: what year range and model water bottle am I looking for to fit with this new bracket? Question 2: Is the pump specific to this set up or can my oem water pump (1984 model) fit with this application? Thank you

[classicretrofit]

Hi Eddie. The same tank is used on Boxsters and 996s. If you google some pics you'll see the pump from an IB is not suitable. Plenty on eBay to choose from.

 

[Eddie]

Thanks! I got the correct bottle with built in pump. My car originally has three tubes coming out of old water pump. Going to the two front headlight washer nozzles and the other to the windshield.

Is there a way to configure the tubes to keep the all washers working?

[classicretrofit]

The headlights use a lot of water (hence the huge tank and separate pump - the pump on the original washer tank is headlights only) so you would empty the smaller tank pretty quickly if you plumbed them back in.

Consequently, we haven't plumbed ours in, but you should be able to engineer a solution.

[porschedude996tt]

Question, why not fill the OEM lower in volume? 

Edited August 22, 2022 by porschedude996tt

[classicretrofit]

16 hours ago, porschedude996tt said:

Question, why not fill the OEM lower in volume? 

The point of the smaller tank is to get the original huge tank - made for when the cars were driven daily - out of the way so a condenser can go in its place.

[Nick]

Hello. I have a 1980 911SC which has the AC dryer mounted in the wheel well at this location. Is this upgrade possible whilst keeping this installed or no?