hardened ex. seats

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Aug 9, 2007 | 07:25 PM

#11

66GTKFB

5th Gear Member

Joined: Mar 2007

Posts: 2,623

From:

RE: hardened ex. seats

Quote:

ORIGINAL: Aussie66Fastback

I use a lead replacement additive designed to overcome the issue of the old "soft" valve seats.
the lead was used as a form of octane boost (dont ask for the chemistry) but a side effect was lead oxide which formed a layer on the valve seats preventing metal on metal wear.

Jim, in your case I'd beg to differ and suggest the protective layer is long gone.

I don't race the car, I don't tow anything, I don't put a strain (well - not often) on the engine and there has been enough lead build-up retained to last a couple of decades (which may run out as we speak) so I'm not going to worry about it.
eep4lfe
Any machine need to be given instructons on what you want. If you said to replace the seats, they would. If you didn't say - you didn't get.
Jim

Aug 9, 2007 | 08:09 PM

#12

Oxnard Montalvo

4th Gear Member

Joined: Sep 2006

Posts: 1,188

From: 1984

RE: hardened ex. seats

I'm also of the mind it's really nothing to worry about. I've had some kind of high compression engine in some kind of car for going on 36 years now and remember how the removal of lead was going to destroy life as we know it. I'm still waiting.

Aug 9, 2007 | 08:22 PM

#13

66GTKFB

5th Gear Member

Joined: Mar 2007

Posts: 2,623

From:

RE: hardened ex. seats

Quote:

ORIGINAL: Oxnard Montalvo

I'm also of the mind it's really nothing to worry about. I've had some kind of high compression engine in some kind of car for going on 36 years now and remember how the removal of lead was going to destroy life as we know it. I'm still waiting.

It did - take a look around you.
Conan the Destroyer