i picked this head up to use on my b20 build it came as an assembled head in great shape i tore it down to make sure it was all in good shape. On the exhaust side one of the valve guides had a good size crack in it so i had it pressed out to replace it. I went to acura and got a gsr valve guide and go to use it and the valve wont even start to in it so i guess its all oversized. how would i go about finding the correct valve guide to use.

 

Your not going to get the valve guide installed by merely twisting/pushing it into the head by hand. There are special tools required. Think about it, if valve guides installed that easily, what would prevent them from moving with the valve during start-up when the valve and guide are dry?

 

valves guides are pressed in

 

sorry i didnt specify i didnt mean the guide wont go in the head i know you have to have them pressed in what i meant was the actual valve stem wont go through the gsr valve guide.

 

 

You may need to have the valve guide reamed

 

Correct.

You need to have the guide reamed to size.

 

thanks its at the machine shop now.