if i purchused spoon valves and retiners would it be better to intall it after i break-in the engine or could i put it in right after and break it in togther? does anyone have spoon valves and retainers?? does it really help your engine at high RPM??

 

Unless you are going to raise your rev limit, the stock valves should perform just as well as the spoon valves. Are the Spoon valves polished better than the stock valves?

 

The Spoon vlaves are polished and much lighter than stock. Stiffer valev springs not just benefit hi rpm revs , it also improves mid-range power 2-4whp.

 

I would do the Hondata Insulator gasket and save the money and same/better gains. About $55.

 

but if i do install the valves and retainers will i need to break in the engine again?

 

Probably, you'd want them to seat properly, and the "beneficial" layer of carbon to form.

But... Like they said, if you aren't going to raise the rev limit, why bother? Gains will be minute for the price (You know that the headgasket kit is about $150 OEM?)

The reason that you want lighter valves and stiffer springs is to prevent valve float and hence piston to valve contact.

 

There is no break in time on valves and springs. once they are installed properly(meaning three angle valve job) they are set. You can't just throw in valves, you must cut the valve seats so that the valve seals correctly when closed. There is no such thing has "beneficial" layer of carbon. Carbon will soak up fuel, the more carbon bulid up, the fuel will be soaked up(not good). Unless you planning on changing cams or sc the engine, valves and springs are the last thing to due.