I bought a car with a b20b in it and a p8r head, the car was running on 3 cylinders so I pulled the head and found cylinder #3 exhaust valve was burnt up. I know these heads have 33mm intake valves but I was wondering if the exhaust valves are bigger as well. I need to replace this one valve but don't think I can order it through honda.

if any one has any info for were I can get a new valve that would be great (I also have a spare ls head on a motor in my garage that I could pull a valve out of it if it will fit.

 

It is still the same 28mm valve for the exhaust.
As for the intake valve, my head with the B20a from the prelude. It uses the 33mm intake valves hit up frankacura. he knows the head well.

 

thanks for the info. thats interesting that the b20a uses the same valves. I didn't know that anything from them interchanged lol.