Sounds rather strange... Soft heads would allow the valves to "recess" more
easily I would have thought. Maybe he means cause they are soft alloy heads
they already have valve seat inserts which means they are OK for unleaded?
Cheers,
+--------------------------------------------------------+
| Chris Howard | Email: [EMAIL PROTECTED] |
| '69 Datsun 510 | Web: http://turbovan.com/ |
| '80 Escort Van SR20DET | Work: http://wattlesoft.com/ |
+--------------------------------------------------------+
| Forced induction - 'The replacement for displacement.' |
+--------------------------------------------------------+
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Justin
> Friedrichs
> Sent: Thursday, 1 March 2001 10:20 AM
> To: '[EMAIL PROTECTED]'
> Subject: RE: EFI L series engines and other fuel problems
>
>
> Hi List
> I have been told by an engineer and a engine builder that any L series
> datsun with an alloy head can run unleaded fuel, it does not need LRP as
> alloy heads are softer than the valves so valve recession or scoring would
> not be a problem. Appartently using unleaded fuel is only a big problem if
> the head is cast iron obviously much harder than aluminium where valve
> problems occur.
> But I am still a bit careful, I use premium every other tank full.
>
> Justin
>
>
>
>
>
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