Valve springs: HKS vs Crower

[Scotty]

I'm going to go ahead and upgrade my springs on the new head that I'm building to lessen the chance of the valves floating at high rpms. My question which ones?

Crower springs and Ti retainers: ~$250
http://www.crower.com/cgi-bin/detail.cgi?prod_id=84175

HKS springs: ~$210
http://www.hksusa.com/products/more.asp?id=850

Anyone have direct experience with both brands? Anyone have the specs for the HKS springs? What spring pressure is needed to reduce the chances of the valves floating at 7.5+k rpms?

 

[Scotty]

punt

 

[BoostinAWD]

crower springs and retainers $210
Oh btw people have rev'd to 8500 rpms with hks272's on stock valve springs.

 

[Scotty]

I've been as high as 8200 with hks cam/stock spring combo...

Looking for first hand experience with the springs listed above.

Anyone know the stock spring seat pressure?

Thanks...

 

[Scotty]

ttt

 

[vr_civic]

I know I'm bringing this thread back from the dead but a year has passed and does anyone have any experience with the hks valve springs compared to the crower ones?

 

[AL92]

Even if the stock springs were ok my car has 130,000 miles so would change them anyway.The hks I dont' think come with titanium retainers.The crower do.Titanium retainers are lighter and might help the engine rev a bit faster.Buddy has titanium stuff on his old subaru xt and it revs super quick.