Working on putting a spare b18a head together. Got a set of new crane cam valve springs. All 16 springs compression rate the same. But, they sent me 8 spacers that they say go under the springs on the exhaust only. This seemed rather odd to me. Anyone else ran into this?

 

Well, if I would have thought about it for a moment. Of course the exhaust valves are longer and therefore need the spacer.