hey setup is 91 civic si
brand new build besides the head which is used
gsr block:
.5 os type r pistons
gsr rods
blalanced crank
arp bearing and rod bolts
new oil and water pump and pick up tube
oem headgasket 81 bore
stock b16 head
aebs head studs
obd0 b16 ecu
problems are that its hard to start up and sometimes makes a grinding like noise but its not like a starter noise, its more of like a electrical noise. when it starts up it idles at 3k so while it was running i pulled the vacuum line on the engine side of the throttle body(the smaller one) and it blew tons of white smoke out the exhaust. whats the deal.