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this post is basically an extension of my crankshaft dynamic question,
secondly directed towards someone who has a lot of knowledge inside the 660 motor--
Heres the senerio(I haven't actually started yet): After very extensive head work and special cam :grin_nod:, Very aggressive port job...would nikisil be an idea for coating the exhaust ports (more for a smoother finish) or would a real good polish job be just as efficient, I say this because nikisil has very good cooling and low friction properties. Same thing in the intake ports but, its being slightly grooved(very small) and notched for a better fuel atomization effect.
The valves were also a concern as well, I wanted to go with titanium valves(to stay light) but the more I read up on them the more I wanted to stay away from them. the reason being I read here and there that they don't hold up so well for high hp 660 motors especially with the stronger springs needed. Again I read they work extremely well for about 2 or 3 races (the pros who use them) and are replaced if not more often. Can anyone verify this?
to the bottom end- taking a little weight off the fly wheel was first, secondly can the counter balancer be removed to get rid of rotating mass, I'm sure its going to vibrate more but is it going to bad enough that it'll start effecting or ruin the motor?
secondly directed towards someone who has a lot of knowledge inside the 660 motor--
Heres the senerio(I haven't actually started yet): After very extensive head work and special cam :grin_nod:, Very aggressive port job...would nikisil be an idea for coating the exhaust ports (more for a smoother finish) or would a real good polish job be just as efficient, I say this because nikisil has very good cooling and low friction properties. Same thing in the intake ports but, its being slightly grooved(very small) and notched for a better fuel atomization effect.
The valves were also a concern as well, I wanted to go with titanium valves(to stay light) but the more I read up on them the more I wanted to stay away from them. the reason being I read here and there that they don't hold up so well for high hp 660 motors especially with the stronger springs needed. Again I read they work extremely well for about 2 or 3 races (the pros who use them) and are replaced if not more often. Can anyone verify this?
to the bottom end- taking a little weight off the fly wheel was first, secondly can the counter balancer be removed to get rid of rotating mass, I'm sure its going to vibrate more but is it going to bad enough that it'll start effecting or ruin the motor?