[Vwdiesel] ALH - IP question

brian gochnauer brian at gochnauer.net
Sun Apr 12 15:14:07 PDT 2009

the '03 engine has 65k miles and came with pump and turbo.
So I was going to swap the old one for the new one 'as-is' ,complete.

found this site http://www.dieselvw.com/Jetta4Parts.htm stating the manual
is 10 mm pump rotor and the automatic is an 11mm pump rotora (dia)
I guess the 11mm would pump more fuel (higher pressure) with the same
stroke, given the same cam profile. It should work either way.

The 01' (blown engine) is an automatic, so worst case is reduced
performance, which is fine. 50/50 chance.


On 4/12/09, dieseltdi at verizon.net <dieseltdi at verizon.net> wrote:
> Yes the pumps are different but only by degrees.  The automatic produces
> higher pressures that the standard and some folks say they wear out faster
> but I have no personal experience with that.  Might still work without any
> problems on a standard though.  Are you swapping out the whole engine or
> just the pumps because the pumps can be swapped no problem.  Hayden
> On Apr 12, 2009, at 11:41 AM, brian gochnauer wrote:
>  I acquired a '01 Jetta TDI (fully loaded) and fully exploded at 160K
>> miles
>> missing timing belt. :)
>> I was told it has a broken rod, but haven't seen a hole in the block yet.
>> I'm guessing the t-belt had never been changed, they had bought the car
>> with
>> 104k miles.
>> Anyway, got a replacement engine from an '03 TDI but didn't pay attention
>> to
>> whether it was an automatic or manual transmission.
>> It's rumored there is a difference in the injection pump.
>> Anyone know what that is?
>> Thanks,
>> Brian
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