One issue may be wear on the throttle shaft. HDPE, Delrin, and PFTE
actually can wear the metal out. I have seen this in industrial plastic
& metal applications.
Jon

On 9/13/2014 1:54 PM, Neil N wrote:
> very helpful Alistair.
>
> I still may buy the gowesty vacuum operated TB switch for my '88 but
> knowing that HDPE likely works (untested?) is really helpful.
>
> Do you see HDPE wearing well over the long term? I'm sure I could
> google up some info too.
>
> Thanks.
>
> Neil.
>
> On 9/13/14, Alistair Bell <albell@shaw.ca> wrote:
>
>
>> http://shufti.wordpress.com/2014/09/13/vanagon-quick-throttle-body-re-bush/
>
>
> --
> Neil n
>
> Blog: tubaneil.blogspot.ca
>
> '88 Westy http://tinyurl.com/c8rlw6p
>
> '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
>
> Vanagon VAG *Gas* inline-VR Engine Swap Group:
>
> http://tinyurl.com/d7gd5ej