just wondering what the difference was. i need to order one right now and the 94 gsr is like $138 and the 01 gsr is about $98. i will be putting it on a b20b block, so any help would be appreciated.

 

the 01 oil pump has the crank sensor on it

 

You can use the newer pump, but your lower timing cover won't fit. You can use the newer cover without problems -- I think it's still cheaper to get the pump and cover than buying the older style pump.

 

so all i would need is a 96+ timing cover and i will be fine?

 

you would need the 96+ gear that goes where the crank is too

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrettyLude &raquo;</TD></TR><TR><TD CLASS="quote">you would need the 96+ gear that goes where the crank is too</TD></TR></TABLE>

You shouldn't if you don't have a crank sensor. I run a 96+ oil pump/cover on a 91 block w/ stock timing gear.

 

obd2 oil pump are a updated verison of the obd1 oil pump and flows better. and yes you can put a obd2 pump on a obd1 block. Also you can reuse the obd1 cover just trim it down or buy the obd2 cover and be done with it.