Got a ?....to put a B18C engine into a 91 Honda CRX SI and turbo charge it....how much compression will I have...will it blow the engine or boring out the pistons to like .85mm will help to relieve some of the compression? I am new to this but I'm about to do an engine swap just need some info....any comments are welcome if you have a better suggestion please comment...thanks!

 

my b18c 1991 crx hf was hitting high twelves with 7lbs of boost. just make sure you get a good management system like hondata and dont over advance timing when not tuned since over advancing causes a high spike of cylinder pressure which kills the high compression b18c. if you want lower compression go with pistons and try not to overbore you want as much material on the block as possible. no its ok to bore if sleeved from aebs or darton. there are so many things to do for reliable boost that it gets way expensive

 

you can have high comression and turbo,but need very good tuning and good fuel.