[Vwdiesel] The importance to lining up oil pump gears with markings on ea...
Tony and Lillie
tonyandlillie1 at earthlink.net
Fri Oct 9 12:51:22 PDT 2009
And of course, you can increase the amount of fuel on the pump that turns out to be an issue. However, I'd agree with Loren, it's probably a minimal amount of difference anyhow.
>From: LBaird119 at aol.com
>Sent: Oct 9, 2009 2:40 PM
>To: vwdiesel at vwfans.com
>Subject: Re: [Vwdiesel] The importance to lining up oil pump gears with markings on ea...
>In a message dated 10/9/2009 12:13:26 PM Pacific Daylight Time,
>syncronized_turbo at yahoo.co.uk writes:
>> Running the 155s on an NA will retard your
>> timing, as the pump reaches the necessary pressure later in its stroke
>> (Which, if I'm not mistaken, are why TD pump timing specs are more
>> advanced than NA specs? I think?).
> Actually I think both time at 1.00 or maybe the Na time at .95 but
>then NA pumps time at .88, 1.15 and .95 and it has to do with the
>cam plates not the injector pressures. Since liquids are basiclly
>non compressable (for the most part), it's highly unlikely the timing
>will really change since it's not set by pressure. In theory it takes
>longer to built that bit more pressure but it seems to be pretty minimal.
>The biggest change I can see would be slightly less fuel for what the
>pump's set for. Higher pressure injectors will close earlier than NA set
>injectors thus less fuel. Shouldn't be anything big, just like any
>change in timing. I'd run them.
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