Subject	soft valves
Posted by	aliaZ on August 06, 2011 at 10:57 AM
	This message has been viewed 1386 times.
Message	Doing a turbo swap for a guy, and decided to do a compression check with two cylinders reading 130, vs 170 on the others. Leakdown test revealed a problem with the valves: Sunken into the head: Soft valves are identified by the "30" on the valve head, vs "EG" for the updated valves. This Z had a jspec transplant...
Follow Ups	soft valves - aliaZ 10:57:27 08/06/11 Re: soft valves - Tech@EPR 11:08:59 08/06/11 This is a known problem with the "30" valves - has been - Ash's Z 11:16:37 08/06/11 Re: This is a known problem with the "30" valves - has been - Tech@EPR 11:27:40 08/06/11 Re: Re: This is a known problem with the "30" valves - has been - aliaZ 11:29:54 08/06/11 Re: Re: Re: This is a known problem with the "30" valves - has been - Tech@EPR 11:37:02 08/06/11 I'm going to install a set of low mileage heads that I had - aliaZ 15:13:54 08/06/11 Re: I'm going to install a set of low mileage heads that I had - Tech@EPR 17:43:51 08/06/11 *cough cough* (n/m) - Ash's Z 12:00:41 08/06/11 the motor is completely stock - aliaZ 11:27:44 08/06/11 Ironically, I had the "solf valves" hardness tested a long - Ash's Z 11:15:10 08/06/11 yep, you're correct - aliaZ 11:26:23 08/06/11 So is the problem actually with the head? I'm confused. (n/m) - Stadsport (PHX) 14:30:36 08/06/11 no it is a valve problem (n/m) - aliaZ 14:59:23 08/06/11 Typical "30" intake valve. - Russell@Z1 13:02:58 08/06/11 Not really a soft valve - toykoz32 13:47:16 08/06/11 correct - aliaZ 14:58:14 08/06/11 Good write-up - OverZealous (CT) 20:03:37 08/06/11 My 90 had them. I came across it a few years ago. (n/m) - ELDIABLO 10:05:18 08/07/11
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