Quote:
Originally Posted by chris_seven
Henry,
Very interesting, one of my concerns about Ti valves has been the locks and the lack of clamping which I thought could result in galling.
Do you know the nature of the coating on the stems?
Also did your receive my e-mail about the MFI pump I need to source?
Thanks
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The valve stem coating is a dry-film moly similar to the CT1 coating we use on all of our bearings and rocker pads.
When we originally ordered the valves from Del West, they voiced a concern about the 3 groove approach as well but history has proven that hand fitting the retainers was a viable and reliable approach. We wanted a direct Porsche replacement and although custom valve seats proved to be desirable, our valves followed Porsche's design.
I believe my refusal to use excessively stiff valve springs (240 lb over the nose is my target number) has also contributed to our reduction in parasitic loss and improved longevity.
Chris
No email but I can search my spam filter. I get 200+ email a day and sometimes one or two will fall through the cracks.
We have almost every Bosch MFI pump in stock (sans 019 RS) and have some cool mods that improve functionality and form.
This is an 015 (2.4 T) pump sealed, with our RSR cover and hand enrichment device.
