Old school turbo engines compression was usually lowered some compared to N/A, but that is not the trend for modern engines
Here is one example of a modern turbo engine
Ford 3.5L v6 ecoboost. 10.5:1 compression ratio, stock 12-14 PSI boost and only requires 87 octane. At those boost levels you are basically doubling the amount the air into the cylinders as it could draw in naturally aspirated.
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Today's Featured Article - Product Review: JB Weld - by Staff. JB Weld is basically an epoxy glue that does an exceptionally good job of bonding to cast iron and steel along with several other materials. As I mentioned, it is so common that I have yet to buy a tractor that did not have JB Weld used somewhere. It is sometimes used so well you can't tell its there and other times used as a sloppy quick fix. Finding where and how it can be used correctly is key to whether you are using it as an "inelegant hack" or an integral solution to difficult and expens
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