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Post by kz1000st on Dec 25, 2013 18:42:38 GMT -6
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Post by clonedrone on Dec 26, 2013 10:05:31 GMT -6
Interesting read.
In the midst of my build I see the Valve springs as a real problem.
I have three new sets from various vendors.
Doesn't look like any thought or engineering is put into this area.
For instance, All the springs I have have the inner spring coils going in the same direction as the outer Spring. Huh? Valve train #101 this setup translates bad ju ju Harmonics. the inner spring's all look like a Coil out of a Spiral Binder, A stiffer spring just increases my seat pressure, then I need to look at a different material for Valve seats.
I have tried matching up to no avail with a high end PSI or PAC valve spring.
I'll post what I end up doing along with my opening and set pressures and coil bind mesurements.
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Post by kz1000st on Dec 26, 2013 10:32:23 GMT -6
Have you looked at titanium valve springs?
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Post by clonedrone on Dec 26, 2013 12:38:02 GMT -6
Have you looked at titanium valve springs? No such thing. I ordered the as advertised Titanium Springs. Last time I checked Titanium is not magnetic, There just sprayed with a worthless coloring. Same quality of the inner spring coils going in the same direction as the outer spring, looks like something robbed out of a Spiral book binder. I will post spring specs for this spring as well. |
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Post by kz1000st on Dec 26, 2013 16:51:50 GMT -6
Well that stinks. I believed the ads. I have no reason to buy them but did have a set of heavy duty springs in my broken head. They're in the video.
kliff installed them.
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Doc's Anything Goes
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Say no to scooter abuse
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Post by jct842 on Dec 26, 2013 17:00:15 GMT -6
For 150 I could see a 4 valve head using the 50cc valves or possibly a little larger ones. The lighter the weight the faster they can change direction.
Same with springs.
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Post by clonedrone on Dec 27, 2013 14:52:45 GMT -6
I think I have some Ti retainers that are CRN coated I can use.
I'll do a REM Isotropic Finish to the Valve Springs along with some oil Pump parts and the Gear Set, I can do that in house.
I haven't been able to match up any ti Valves with what I have in stock ie MX 150cc, 250cc and 450cc of all colors.
Would cost me $116. each to make them, and I work here!
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Post by cyborg on Jan 4, 2014 20:14:45 GMT -6
titanium ovate section wire is it for springs,,never had a failure in some pretty nutty builds
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