as we all know b20 blocks are not made to go pass 7800 according to honda... blah blah...

so to be on the safe side i have been looking into the different components which dont "permit" b20 blocks to rev higher safely... im not looking to go pass 8000 anyways but as an insurance measure

the major diference is the bearing cap bridge (part # 11130-p72-000 item #3 gs-r diagram) which all b-series vtec model come with...

gs-r bottom block



b20b/b20z bottom block



here is my question...
the only other part difference to allow this part to go into b20 blocks is the center bearing cap which is much larger than the center bearing cap that the gs-r motors have...

has anybody installed a bearing cap bridge (factory/aftermarket) on a b20b/b20z???

thanks for your replies...