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Author: Subject: Hardened Valve Seats
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posted on August 1st, 2005 at 11:20 AM
Hardened Valve Seats


Just wondering what year that VW started using hardened valve seats on standard T1 engines.
Any ideas?

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posted on August 1st, 2005 at 12:10 PM


since day 1. there all hardened



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posted on August 1st, 2005 at 12:31 PM


I "thought" pre 1967 they were softer??

Didnt think it was day 1 :duh




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posted on August 2nd, 2005 at 07:30 AM


since day 1



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posted on August 2nd, 2005 at 07:39 AM


so a 1951 split window beetle with orig motor has hardened seats????



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posted on August 2nd, 2005 at 08:29 AM


The steel valves wouldn't last very long pounding into aluminium heads would they?



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posted on August 2nd, 2005 at 09:31 AM


Quote:

The steel valves wouldn't last very long pounding into aluminium heads would they?



You took the words right out of my mouth hehehehe




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posted on August 2nd, 2005 at 09:31 AM


Quote:

The steel valves wouldn't last very long pounding into aluminium heads would they?



You took the words right out of my mouth hehehehe




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posted on August 2nd, 2005 at 01:57 PM


Thanks for that
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posted on August 2nd, 2005 at 02:16 PM


I'm confused. How come when we talk about unleaded fuels, we talk about harden valves seats coming in around '69-'70, and that you can only run unleaded without additives, in engines with hardened valve seats.

Anyone care to enlighten?
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posted on August 2nd, 2005 at 02:27 PM


I think it might be a myth?? The seats were always hard steel. Valve seat recession is something that happens on cast iron head engines. VW heads might drop seats now and then but that probably isn't related to unleaded fuel. Plus how many VW's would actually have their original valve seats from pre-69 anyway. There is a mob in the UK that sells "unleaded" conversion heads which I think is rubbish.



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posted on August 2nd, 2005 at 02:59 PM


VW's were dropping valve seats and guides and burning valves long before unleaded was around.



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posted on August 2nd, 2005 at 07:53 PM


Some of the Leaded additives for unleaded fuel are good for the valve guides which can wear heavier with unleaded but seats are ok.
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posted on August 3rd, 2005 at 08:02 AM


Quote:

I'm confused. How come when we talk about unleaded fuels, we talk about harden valves seats coming in around '69-'70



I think your thinking of Holdens n Fords any motor with an alloy head has hardened seats.






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