fuel pump replacement

[Snoopy]

End of story (for the list archives):

I've managed to get a Pierburg 7.21651.60 (which is currently not
manufactured anymore, and replaced by .70). It had an "adapter" (as seen
in shop pictures), but is not the same as Audi's spring pin stuff. You can
see that difference at SJM site. It doesn't need damper. Originally it
was intended for older mounting with 3 rubber feet. However, it nicely
fits the newer basket. Just get some copper washers and the cap nut.
Order cap nut at your dealer, as it is not available in usual hardware
stores.

I didn't like few things:

1. The green screen at the bottom: I took the green net off, leaving only it's
plastic frame. That frame gets very near the original screen, and some
time later I may have holes there. But without the screen at all the
pump will not fit tightly in the basket.

2. The O-ring around the pump adapter - never really understood why it
is there. With Pierburg's adapter it is even more questionable,
because the positioning tang is connected to the round groove, so the
ring protrudes a bit at that point.

Anyway, no more buzzing! It feels like a different car :)


> When you get the pump with the basket, it'll fit into the mounting you
> have, I believe.

> On 4/23/2012 12:13 PM, Snoopy wrote:
>> Hi. I need to replace fuel pump on my '90 100 2.3. It has a newer
>> mounting without the 3 rubber bushings, and the big 60mm Bosch
>> without the inlet screen.
>>
>> Now the problem is that only 2 types of pumps are available near me:
>>
>> 1. The bare 43mm pump (Pierburg 7.21651.50.0 and similar,
>> http://seekpart24.com/pierburg/fuel-pump-721651500?c=100717&at=9707) -
>> this one is suggested by various sources as a replacement for my mounting, but - only
>> with "spring pin" adapter (another unobtainium here). No damper
>> required.
>>
>> 2. The pump with plastic holder, 60mm? (Pierburg 7.21651.70.0 and
>> similar,
>> http://seekpart24.com/pierburg/fuel-pump-721651700?c=100717&at=9707) -
>> this one is supposed to fit older mountings, but it looks the same to
>> me, just inserted in adapter, and added (sort-of) screen. No info
>> about the damper.
>>
>> Both of these pumps have the same characteristics. I've already tried
>> a used 60mm Bosch with screen, but I didn't like how it fitted into my
>> cradle (a bit too long). So I'm afraid that I'll have the same problem
>> with the #2 Pierburg. Also, the #2 is significantly cheaper - no
>> integrated damper?
>>
>> Any suggestions? I prefer a drop-in solution, but I could try to look
>> for a 43mm mounting in junkyard. What models/engines had it?
>>
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-- 
   Snoopy
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