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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,640
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That was the serial number stamped on the ID tag. I had to look very closely to make out the part number (dumb idea to put gold print on silver background). The part number is 438 100 031. It is from a 1980 RoW engine, and the WUR is a 089. And I have a spare 033 that I just installed to see how it behaves. More on that later.
panama911: Thanks for the response. Yes, the throttle plate opens all the way. It would not make a difference in how the WUR responds because the manifold vacuum falls to near atmospheric with more than about 1/4 throttle at lower to medium RPMs. I know the 089 WUR is out of spec, which is why I am testing the 033 WUR.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
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