I just got my hands on my B20 Block and wanted to know what water pump to use any b-series water pump will do??? im buying it from inlinefour.com but they dont have a B20 one. i wanted to know if i could use a b16 or a b18 pump thanx in advance

 

b16 and b18 will work, but go with the b18.

b18 and b20 are the same motors with the exception that b18 is 81mm and b20 is 84mm.

 

If you use the B16 or B18c you will need to use a gsr timing belt.If you use the B18a/b or B20 use the ls/cr-v belt.
Glenn

 

Thanx for the rapid response