Subject	I have found issues with Ferrea valve springs too...
Posted by	LitlElvis on May 29, 2008 at 9:25 PM
	This message has been viewed 644 times.
In Reply To	Don't believe everything you read! posted by na300zx (OH) on May 29, 2008 at 07:52 PM
Message	Basically, if installed on a stock head, the inner springs will provide 50% of the total load and in doing this, they are stressed higher than the outers. A little machining and juggling of shims goes a long way to distributing the stress equally between the inner and outer springs and achieving the proper 2/3 outer, 1/3 inner load distribution. This probably isn't too big of a deal since I haven't heard of any catastrophic failures related to using Ferrea valve springs but as far as dual valve springs are concerned, this is the correct way to set them up. Cudos to you for taking the time to check out your own setup, never hurts to be more informed. Hopefully Z1 can correct the problem.
Follow Ups	Don't believe everything you read! - na300zx (OH) 19:52:51 05/29/08 Sorry about the link... here it is fixed - na300zx (OH) 19:54:59 05/29/08 well done. i tip my hat off to you for properly validating - resorb (NJ) 19:57:42 05/29/08 Nice!! Good work (n/m) - twinturbineZ 20:16:20 05/29/08 must be AMS valve springs (made in China) (n/m) - aliaZ 20:25:17 05/29/08 i was gonna say that too, maybe they are made by AMS?? lol (n/m) - zyoulater 02:59:13 05/30/08 cue token response from Z1 staff (n/m) - Tikigod (Denver) 20:26:25 05/29/08 Seriously, please don't let this post get degraded into - na300zx (OH) 20:30:40 05/29/08 I have found issues with Ferrea valve springs too... - LitlElvis 21:25:08 05/29/08 So if I were to run the Ferrea springs, I should machine the - na300zx (OH) 22:01:43 05/29/08 I'm not really saying it's absolutely necessary, just saying - LitlElvis 00:39:44 05/30/08 ok I will test people's claims (n/m) - LJZTT 23:04:52 05/29/08 Good think you checked. Thanks for the heads up. (n/m) - SeedyROM 23:34:44 05/29/08 i have had a similar experience (n/m) - ztunerz 01:48:44 05/30/08 yup sounds about right.. AMS and Z1 thumbs down. what i like - fst300zx 07:09:59 05/30/08 .. we need more of this and less people flappin jaws.. - The Devils Z 07:30:00 05/30/08 Springs in a ziploc bag with no specs needs no testing - SeedyROM 14:02:34 05/30/08 Good post thanks. (n/m) - Bezza 08:11:07 05/30/08 Thanks for the heads up. (n/m) - BigTDogg (MA) 10:38:19 05/30/08
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