Quote:
Originally Posted By: jhellwig
Originally Posted By: yvon_la
Gm bypass at the engine. So only adbv is needed
Not anymore. Bypass is in the filter on the newer stuff.
Originally Posted By: Sayjac
Quote:
Regarding the combo valve, there must be some reason why ACDelco spec'd a dome end bypass valve on the redesigned e-cores instead of the previously used combo valves in the previous e-core design.
Actually it wasn't ACDelco, it was GM. ACDelco for newer GM models with filter integral bypass use the poppet type bypass.
However, other ACDelco ecore filters still use a combo valve. The PF53 equivalent to 3614 for non GM, specs/uses a combo valve.
So you're saying AC Delco applications which didn't require a BPV prior now use a combo valve and not just a ADBV?....
Not sure who the query was directed to as two quotes were combined, a different re:, and one point was highlighted.
To state the/my point again in summary. Point was noted that ACDelco spec'd a "dome end" poppet type bypass and previously used a combo valve.
Technically the poster (captruck) was vague/unclear on one point and incorrect on the other.
His first point 'may have implied' previous ecores for older 'GM' models used a combo valve ('if so' that was incorrect). And two, that it was ACDelco specifically that decided to spec a dome end poppet type bypass. I specifically addressed 'only' the latter, ie., that ACDelco made the choice to spec a dome poppet now which 'implied' that combo valves are no longer used by any ACDelco ecore filters. As the previously noted the PF53 indicates that is incorrect. Some for "non GM" ACDelco filter applications still spec/use a combo valve as they did in the past.
So if query ("so you're saying") directed at the highlighted post, answer no. Not stating/stated in previous post nor implying that older GM block bypass engines now use a combo valve. Still as before, spec/use just an adbv.
However as correctly noted in the post, ACDelco filters 'still' use/spec a combo valves in some applications.