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Old 12-14-2016, 10:22 PM
E30M42 E30M42 is offline
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Join Date: Sep 2013
Location: 757 Virginia
Posts: 144
om603 bypass valve block off

I am currently going through an 87 300d with the om603. I am trying to reduce all possible boost leaks and noticed the the turbo still has an intact bypass valve that is blocked off from the factory and could be a source of a leak being that the rubber diaphragm is 30 years old.

My question is, has anyone removed the diaphragm and spring and installed a block off plate? Is there a block off that is known to fit this particular turbo?

I did a little searching and found one made by IPD (Volvo tuning company) and it appears to have similar dimensions to what would be needed for my turbo.
https://www.ipdusa.com/products/9880/121158-compressor-bypass-valve-cbv-block-off-plate-s60r-v70r
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om603 bypass valve block off-fullsize_13682.jpg  
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Last edited by E30M42; 12-15-2016 at 12:59 AM.
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