[Es2] Fuel pump pressure

[Steve Eiche]

Also notice that the RR does NOT use the accumulator or primary filter, 
as do the CIS cars.  You might want to keep the primary filter, but 
losing the accumulator will eliminate one source of future failure.

Steve

Tom Saltino wrote:

>Well I think I might have just answered my own questions.  I checked in the family album and discovered the URq(RR and pulsed injection) and the '85 4kq(JT and CIS) both used the same fuel pump 893906091E.
>
>Tom
>
>From: Steve Eiche <seiche at shadetreesoftware.com>
>Date: 2004/02/17 Tue PM 04:14:17 EST
>To: "Miller, Chris" <chris.miller at infofoundry.com>,  es2 at audifans.com
>Subject: Re: [Es2] Fuel pump pressure
>
>The stock CIS pumps are fine over 400 hp, as long as they are properly 
>wired, i.e. full voltage to the pump.
>
>Steve
>
>Miller, Chris wrote:
>
>  
>
>>Who's got a 4kq with 20vt conversion?  Did they keep the stock pump?  I think at least a few people had conversions done at 2Bennett, and should know what parts were replaced...
>>
>>--- 
>>Chris Miller
>>Training Development
>>[i] The Information Foundry at Robert Bentley, Inc.
>>Tel: 617.528.4113
>>Cell: 978.844.0293
>>mailto:chris.miller at infofoundry.com
>>http://www.infofoundry.com  
>>
>>
>>-----Original Message-----
>>From: Tom Saltino [mailto:saltinot at alltel.net]
>>Sent: Tuesday, February 17, 2004 2:39 PM
>>To: Miller, Chris; es2 at audifans.com
>>Subject: RE: [Es2] Fuel pump pressure
>>
>>
>>The unknowns are what's kiling me.  Like you said in your post, it's probably safe to guess that the AAN/ADU/ABY engines all run around 3.5bar due to the fact it's got a 3.5bar pressure reg.  I wasn't sure about using a pump built for pulsed injection (993tt) on a CIS car.  I just didn't want to spend the money for a new 4kq pump and then in a coupe of months go out and buy another pump once the 20vt motor is in place.  Catch my drift??  :-)
>>
>>Tom
>>
>>From: "Miller, Chris" <chris.miller at infofoundry.com>
>>Date: 2004/02/17 Tue PM 12:47:20 EST
>>To: "Tom Saltino" <saltinot at alltel.net>, 
>>	<es2 at audifans.com>
>>Subject: RE: [Es2] Fuel pump pressure
>>
>>As I recall, CIS runs a higher system pressure than needed for Motronic.  3B/AAN is something like 3.5-4 bar?
>>A CIS system may be 5 bar or so.  Why put in a bigger pump than needed?  I'm pretty sure you won't need it; Bosch should list the specs somewhere.
>>
>>--- 
>>Chris Miller
>>Training Development
>>[i] The Information Foundry at Robert Bentley, Inc.
>>Tel: 617.528.4113
>>Cell: 978.844.0293
>>mailto:chris.miller at infofoundry.com
>>http://www.infofoundry.com  
>>
>>
>>-----Original Message-----
>>From: es2-bounces at audifans.com [mailto:es2-bounces at audifans.com]On
>>Behalf Of Tom Saltino
>>Sent: Tuesday, February 17, 2004 12:25 PM
>>To: es2 at audifans.com
>>Subject: [Es2] Fuel pump pressure
>>
>>
>>I had an interesting fuel pump morning on the way into work.  It hiccuped and then got extremely noisy.  So noisy that I could hear it easily inside the car....and outside it was insanely loud.  I said a prayer, turned the radio up, and just kept driving.  I was able to get to work.  When I rolled down my window to badge into the lot I noticed that everything sounded fine.  Once hear at ol UPS I shut the car off and restarted it.  It ran so I think I'm ok, but I will be changing the pump once the 20vt motor goes in so I've been thinking........
>>
>>If the pump is on it's way out I want to go ahead and upgrade to what I need once the new motor is in.  My question is, I want to change to a 993 turbo pump (325lph) and wondered if it would affect running my stock 4kq?  Can the stock accumulator compensate for the extra flow, if any?  I say "if any" because I don't know the flow rate of the stock pump vs. the Porsche pump.  I would think so, but wanted to bounce it off you guys and see what you thought.
>>
>>Tom still CIS for now Saltino
>>
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