Valves and Guides cont.

[Tony Hoffman]

Paul,

Valves are sodium filled to dissapate heat. However, materials have
gotten a lot better over the years, and this has become almost an
unnecessary practice. I've done a lot of 1.8T engines that have broken
TB's/bent valves. We replace them (the factory sodium filled valves)
with stainless valves, as the OEM's are about $70 each. I've not seen
anything wrong with them in all the cars I've done this on. And, at
$12 each, it saves our customers a lot of money.

However, if you are concerned about them, ask the guys over at 034. If
they run them in the engines they build, trust me, they are plenty for
anyone else also. They tend to overbuild their stuff.

Good luck with the build,
Tony


On Thu, Apr 2, 2009 at 2:59 PM, Paul <pristle at ihug.co.nz> wrote:
> Hey folks,
>
> Thanks to all those who responded.
>
> Quattrocorner was suggested by some who responded directly and also Phil
> Payne who I was also able to harrass. A quick note to 'QC' has seen Pete
> Reeve come back with a thumbs up on being able to provide 'original
> spec' sodium filled valves.
>
> Just an hour beforehand though I had someone from 034motorsport come
> back with  a suggestion of their larger (40mm vs. 38mm intake and 34mm
> vs.33mm exhaust) 'nitrided stainless' valves that would fit with new
> seats. These come complete with new guides, retainers & collets. New
> guides would be necessary as these have 7mm stems vs. the OEM 8mm. The
> other key difference is that these valves are not sodium filled, but
> given their other ratings and expectations, would that make a difference?
>
> It's likely that we'll go with the latter. Primarily as it's our sons
> project and he has credit at 034.
>
> Will keep the 'list' updated on progress.
>
>
> Paul
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