Offshoreonly.com - what valves are in a stock gen 6 502efi

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HiPerf2000

03-14-2007 12:41 AM

what valves are in a stock gen 6 502efi

what exhaust valves are in a stock gen 6 502efi ? inconel or severe duty ?

Noise Pollution

03-14-2007 08:52 PM

Inconel made by Eaton. Not the best, but they are decent quality.

HiPerf2000

03-16-2007 12:01 AM

i'm buying a used set of heads and figured i'd re-valve them before install. do i need to go with inconel on a stock motor ?? or will manley stainless severe duty work ??

thanks

Noise Pollution

03-16-2007 07:26 AM

Quote:

Originally Posted by HiPerf2000 (Post 2059546)

i'm buying a used set of heads and figured i'd re-valve them before install. do i need to go with inconel on a stock motor ?? or will manley stainless severe duty work ??

thanks

If the heads came off a gen 6 motor they should be Inconel exhaust valves. If your buying new valves, Definitly go with the Inconel for the exhaust. They take the heat better. Who ever does your valve job make sure the you get a seat with of .090 - .100 minium. It helps to transfer the heat.

Griff

03-16-2007 02:37 PM

You save some $$$ if you use the Ferrea super alloy's. They are similar to the Manley inconnels.
http://www.ferrea.com/

BY U BOY

03-16-2007 04:10 PM

Quote:

Originally Posted by Griff (Post 2060207)

You save some $$$ if you use the Ferrea super alloy's. They are similar to the Manley inconnels.
http://www.ferrea.com/

i think that is what came in my zz502/502 heads.

Noise Pollution

03-16-2007 08:59 PM

Forgot to mention. Also have new exhaust seats put in. They have a tendency to fall out.

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