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Registered
Join Date: Apr 2007
Location: Dartmouth, MA
Posts: 206
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Factory Adjustable WUR
I have been tuning my CIS and I noticed the control pressure was out of spec, so I decided to take the WUR apart. I cleaned it very well (I pulled out the disk and everything) and noticed that there is an adjustment that shuts off power to the heater on the bi-metalic strip. I did not adjust at this time and put back together. My control pressure started low in spec for the current temp and then went high. I then turned the adjusting screw that shuts off power to the heating element and was able to adjust my warm CP in spec.
The reason I am posting this is beacuse I have a read a lot about making an adjustable WUR with no mention to the current adjustment in the unit. Has anyone else have experience with this? -Matt
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1980 SC 71 Chevelle SS454 |
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06-17-2008, 09:11 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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Did you shut off the power completely, or just reduce it somehow?
Where is this screw you mentioned?
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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06-17-2008, 12:26 PM
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Adjustable Bi-metallic Contact point........
Quote:
Some of these Bosch WUR's have internal adjustable contact point (factory set) as per particular application. These are not commonly found in early 911's and SC's. Matt, What part number do you have in this particular Bosch WUR? Thanks. Tony |
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06-17-2008, 02:51 PM
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Adjustable WUR.......
This is an example of Bosch WUR that has an internal adjustable electrical contact point.
 Tony |
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06-17-2008, 03:05 PM
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Join Date: Apr 2007
Location: Dartmouth, MA
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That is what I have. It seemed to adjust nice
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1980 SC 71 Chevelle SS454 |
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06-18-2008, 09:06 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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What did you actually adjust? The gap between the contacts? Can you indicate using that pic from Tony?
Interesting...if that last number is 088, it shows as a Rolls Royce '86-'90 WUR!
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone Last edited by Paulporsche; 06-18-2008 at 03:41 PM.. |
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06-18-2008, 03:38 PM
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