Rebuild heads?

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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Ziggy1621
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Car: '90 Z32 TT (Shibui)
'90 Z32 2+0 NA
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What would be the real need to rebuild a set of heads? I'm rebuilding the engine, and will have the heads surfaced, but do I really need to rebuild them or would a good cleaning of the valves suffice? http://twinturbo.net/net/viewmsg.aspx?f ... dtSearch=4

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t.mcginley.jr
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Joined: Fri Jun 01, 2012 5:50 am
Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang
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Usually it depends on how many miles are on them, which impacts how worn they are.

A machine shop would measure the valve springs and decide if they are still within spec or if they're shot. If any valves need to be replaced, that should be done too. If the valve springs still check out you can just polish them up and replace the valve stem seals.
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Ziggy1621
Posts: 1137
Joined: Sun Jun 10, 2012 5:57 pm
Car: '90 Z32 TT (Shibui)
'90 Z32 2+0 NA
'68 311 Roadster
2004 Rx330
2011 BMW 550i (TT)
Location: Cocoa, Florida
Contact:
Contact Ziggy1621

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Perfect, thanks bro
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