Way too much is riding on oil pressure to simply "HOPE" that spring tension is as good as original. "You don't want it to be too much, you don't want it to be too little." What does this mean when you are trying to control oil pressure at RPM and idle? There is a spring tension specification in the Volkswagen manual under the Engine section, page 35 for Type 1 and page 30 for Type 2. Installing each of these springs should never be guess work. There is a lot of spring tension variation even among new springs. Spring tension is measured when the spring is compressed to the specified loaded length. To do this will require a scale on the drill press table. Set the depth control on the drill press to the specified spring loaded length above the scale surface. Compress the spring to the loaded length then observe and record the scale force. Install springs to your liking then observe their performance. Swap them out as necessary to adjust for desired performance. Read my technical paper titled "Measuring Oil Pressure & Oil Cooler Bypass Spring Tension" on the subject published on The Samba under Technical, Miscellaneous.
Way too much is riding on oil pressure to simply "HOPE" that spring tension is as good as original. "You don't want it to be too much, you don't want it to be too little." What does this mean when you are trying to control oil pressure at RPM and idle? There is a spring tension specification in the Volkswagen manual under the Engine section, page 35 for Type 1 and page 30 for Type 2. Installing each of these springs should never be guess work. There is a lot of spring tension variation even among new springs. Spring tension is measured when the spring is compressed to the specified loaded length. To do this will require a scale on the drill press table. Set the depth control on the drill press to the specified spring loaded length above the scale surface. Compress the spring to the loaded length then observe and record the scale force. Install springs to your liking then observe their performance. Swap them out as necessary to adjust for desired performance. Read my technical paper titled "Measuring Oil Pressure & Oil Cooler Bypass Spring Tension" on the subject published on The Samba under Technical, Miscellaneous.