Running hot
Huw Powell
audi at humanspeakers.com
Tue Jun 2 08:28:06 PDT 2015
I'm curious as to why you didn't simply replace the fuel pump with
stock, but anyway...
One temp sender is for the gauge, the other is for the CIS computer. I
forget which one is which, it will be in your Bentley.
If you want an accurate temp reading, just pick up an IR thermometer, I
got one from Harbor Freight for about $20, they are lots of fun.
- Huw
On 6/1/2015 11:46 PM, David Vanden wrote:
> They have a lot of the knock offs that are advertised as being equal to
> the Bosch 044 Motorsport and with the more clever the advertsing and
> the semantics they almost seem like one and the same. The stock one is
> inaudible. Apparently the 044 is notorious for being loud. I read that
> the pressure regulator or whatever it is on the outlet is to blame in
> part. I read you could use the stock one so that might make it quieter.
>
> Finally, if I am concerned about the accuracy of the temperature reading
> do I need both the coolant temperature sensor and the coolant
> temperature sender that fits directly above it where the top radiator
> hose meets the engine?
>
> On Mon, Jun 1, 2015 at 10:29 PM, Huw Powell <audi at humanspeakers.com
> <mailto:audi at humanspeakers.com>> wrote:
>
> Weird. I think what happened is I googled what you called it, and
> what turned up was a copy or knock-off of the Bosch unit.
>
> I wonder why it is so loud? The stock pump in that car should be
> dead silent, or at least no louder than the lifters ;)
>
> - Huw
>
> On 6/1/2015 10:04 PM, David Vanden wrote:
>
> It isn't a copy. It is a real Bosch! It came in A Bosch Box and it
> says Bosch right on it. I don't know where the assumption came from
> that I was using a copy.
>
> My only caveat with it is its noise level. Which makes me wonder
> whether I should drop another fifty bucks at some point when
> cash flow
> is better,on a silicone "silencer cradle". I wonder if they
> really work
> and whether they could cause it to overheat, being a relatively
> new and
> untested concept. Anyway, that is enough for tonight. My mind
> can only
> absorb so much information.
>
> On Mon, Jun 1, 2015 at 9:58 PM, Cody Forbes <cody at 5000tq.com
> <mailto:cody at 5000tq.com>
> <mailto:cody at 5000tq.com <mailto:cody at 5000tq.com>>> wrote:
>
> I did, you musta missed it much like I missed it being a
> copy rather
> than a real Bosch 044 which is what I thought he said ;-).
>
> I'm 100% certain without a doubt that a real Bosch 044/040
> is CIS
> capable and that it is undoubtedly the stock pump in a 5000
> Turbo.
> At EFI pressures (lower than CIS, therefore more flow) I'm
> still
> using the stock Bosch 040 (in tank) pump to exceed 600hp.
> The only
> question on his at this point is how good of a copy it is I
> suppose.
>
>
>
> -Cody Forbes (mobile)
>
> > On Jun 1, 2015, at 9:37 PM, Huw Powell
> <audi at humanspeakers.com <mailto:audi at humanspeakers.com>
> <mailto:audi at humanspeakers.com
> <mailto:audi at humanspeakers.com>>> wrote:
> >
> > Ah, Cody, why didn't you correct me before I said that
> twice?
> >
> > Are you sure about the pump he bought, though? I saw
> nothing
> about 120 PSI in the description. Keep in mind it was not
> a Bosch,
> but a copy, IIRC. The highest pressure mentioned was 5 bar.
> >
> > I'm pretty sure they also use a power resistor to make
> the low
> speed, but the ones on the small cars don't have a
> reputation for
> burning out. That said, there's no harm in testing it.
> >
> > - Huw
> >
> >> On 6/1/2015 9:08 PM, Cody Forbes wrote:
> >> I assure you Huw ol pal that the 044 pump is indeed
> proper for
> any CIS car. There's the 040 and the 044, one being the in tank
> version and one being the external version. They are
> identical in
> specification and rated to flow at pressures exceeding CIS
> system
> pressures. Again, the in tank version is the OE pump on a 5000
> Turbo. A fuel pump is a fuel pump as long as it will flow
> enough
> fuel at high enough pressure to let the pressure regulator
> do its
> job. Flow rate is inversely proportionate to pressure (as
> pressure
> goes up, flow rate goes down) so you've got to be sure it
> can flow
> enough at 120psi for CIS and the 044 pump absolutely,
> unequivocally,
> unquestionably, can.
> >>
> >>
> >> On the fan noise:
> >> Do these have the same big cooling fan resistor as the
> 5000's? I
> know on the 5000's the resistor burns out on low speed and
> you end
> up with only high speed which is very loud. Also on the
> 5000's there
> are different fan options with 3, 4, and 5 blades. The more
> blades
> the quieter the fan at similar flow rates. Perhaps the
> small chassis
> cars also have different blade quantity options to look in to?
> >>
> >> -Cody Forbes (mobile)
> >>
> >>> On Jun 1, 2015, at 8:41 PM, Huw Powell
> <audi at humanspeakers.com <mailto:audi at humanspeakers.com>
> <mailto:audi at humanspeakers.com
> <mailto:audi at humanspeakers.com>>> wrote:
> >>>
> >>> You might want to test your radiator fan sender
> doohickey (if
> that's what you mean by "new temperature sensor then you're
> all set).
> >>>
> >>> It's a two-speed fan, and "high" is pretty loud.
> "Low" is not
> so bad, but if the sender is partly bad you might have high
> only.
> That makes it louder, and also a bit hotter before it comes on.
> >>>
> >>> The fan should almost never come on while you are
> moving, but
> idling on an 80F+ day it will cycle on and off every couple
> of minutes.
> >>>
> >>> I'm wary of your concept of "superior", since you
> already put
> the wrong fuel pump in your car...
> >>>
> >>>> On 6/1/2015 8:23 PM, David Vanden wrote:
> >>>> It hasn't overheated. I refuse to drive it until I
> at least
> get the
> >>>> radiator cleaned and install the new temperature
> sensor. I
> removed the
> >>>> radiator from the car. It seems to have a lot of
> gook inside.
> >>>>
> >>>> I just liked the idea of a superior radiator because
> I get
> annoyed with
> >>>> it not running cooler and with the cooling fan coming
> on so
> frequently.
> >>>> I figured if there was a way to quiet the cooling fan
> and not
> be so
> >>>> reliant on it it would be cool
> >>>>
> >>>> On Mon, Jun 1, 2015 at 8:01 PM, Huw Powell
> <audi at humanspeakers.com <mailto:audi at humanspeakers.com>
> <mailto:audi at humanspeakers.com <mailto:audi at humanspeakers.com>>
> >>>> <mailto:audi at humanspeakers.com
> <mailto:audi at humanspeakers.com>
>
> <mailto:audi at humanspeakers.com
> <mailto:audi at humanspeakers.com>>>> wrote:
> >>>>
> >>>> This Nissen's:
> >>>>
> >>>>
> http://www.partsgeek.com/catalog/1987/audi/4000_quattro/cooling_system/radiator.html
> >>>>
> >>>> is what people have been using "forever". Direct
> fit, but does
> >>>> require a "universal" corrugated top hose since
> for some
> reason the
> >>>> hose nipple is a couple of inches further from the
> engine.
> >>>>
> >>>> I cut two original hoses and joined them with a
> stainless steel
> >>>> barbed fitting, but that's not necessary, it was
> just fun
> to do.
> >>>> And cheaper.
> >>>>
> >>>> I don't know if people have used the other
> radiator shown
> there.
> >>>>
> >>>> Has your car overheated yet?
> >>>>
> >>>> - Huw
> >>>>
> >>>>
> >>>> On 6/1/2015 6:26 PM, David Vanden wrote:
> >>>>
> >>>> This question may be perhaps rhetorical but
> did anyone
> install a
> >>>> Flex A
> >>>> Lite universal fit radiator, see significant
> improvement, and do
> >>>> so without
> >>>> spending a lot of money on mounting hardware?
> >>>>
> >>>> On Sun, May 31, 2015 at 11:57 PM, Andrew Buc
> <abuc at andrewbuc.com <mailto:abuc at andrewbuc.com>
> <mailto:abuc at andrewbuc.com <mailto:abuc at andrewbuc.com>>
> >>>> <mailto:abuc at andrewbuc.com
> <mailto:abuc at andrewbuc.com>
>
> <mailto:abuc at andrewbuc.com <mailto:abuc at andrewbuc.com>>>>
> wrote:
> >>>>
> >>>> Your 4kq is old enough that the odds are
> pretty good it
> >>>> needs a new
> >>>> radiator. I had the radiator on my ’87 4kq
> replaced
> 2 or 3
> >>>> years ago. In my
> >>>> case, the issue was coolant loss, not
> overheating
> (I started
> >>>> carrying jugs
> >>>> of coolant in the trunk and topping up as
> needed),
> but still.
> >>>>
> _______________________________________________
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