JoaoCaldeira
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| posted on 22/5/06 at 08:07 AM |
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Fuel pump: connect to to car loom or to bike loom
Hi Marc.
In a fuel injected R1 (2003 in my case) what have you done to connect the fuel pump (Bosch high pressure):
. directly to the bike loom (ECU drives it)
. to the car loom but through a relay commanded by the bike loom (due to amp constraints)
. permanently to the car loom
Thanks,
Joao
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tks
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| posted on 22/5/06 at 08:50 AM |
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Deffenitly
you need to connect it to the R1 loom!!!
dunno if they check it!
but its the only way of making the system secure.
When you put the loom on contact the pump wil run for 10seconds.
after that it will only run if the engine makes rpm.
in case of a accident and the engine stalls, the fuel will be cut of.
This is obligiatori in all injection cars.
On my honda loom the fuel pump relais gets it signal from the mcu.
and the relais powers the pump.
Regards,
Tks
The above comments are always meant to be from the above persons perspective.
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G.Man
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| posted on 22/5/06 at 09:52 AM |
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It must be connected to the bike loom (via the Bikes fuel pump relay), or you will not be able to achieve a stable fuel pressure and the fueling will
be all over the place...
Marc will back me up on this when he reads this without a doubt!
[Edited on 22/5/06 by G.Man]
Opinions are like backsides..
Everyone has one, nobody wants to hear it and only other peoples stink!
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Agriv8
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| posted on 22/5/06 at 10:07 AM |
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Yup,
Will second that Mark that took some finding 
how the car going ?
regards
Agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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G.Man
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| posted on 22/5/06 at 10:43 AM |
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Car is going sweet, except for an annoying oil leak I cant trace...
Hows yours?
Opinions are like backsides..
Everyone has one, nobody wants to hear it and only other peoples stink!
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amalyos
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| posted on 22/5/06 at 10:51 AM |
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Do you need to do this with the Carb Version?
I've connected mine to the MNR loom (but not yet started the engine yet).
Steve
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Agriv8
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| posted on 22/5/06 at 11:19 AM |
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quote:
Originally posted by G.Man
Car is going sweet, except for an annoying oil leak I cant trace...
Hows yours?
Excellent need a rolling road session to get her tunned - 500 miles done.
RE oil leak I have one of those its called a Rover V8 engine I am down to the odd drop but Ill be buggered if i can find it. Might have to
resort to the talculm powder
Regards
AGriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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chockymonster
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| posted on 22/5/06 at 03:14 PM |
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Back on the subject of fuel pumps, what's the advised one to use for an R1? The standard bike one looks a bit open to the elements.
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JoaoCaldeira
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| posted on 22/5/06 at 03:46 PM |
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IIRC that will depend on which R1.
For carbed ones, the one from the bike.
For injected, unless you have put the original pump inside the tank (you would have butched the tank, then) you will need one good for 3 bar. Now and
then there is one on eBay. Bosch seems the most used.
Joao
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chockymonster
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| posted on 22/5/06 at 04:57 PM |
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I'm using a 2003 5PW.
Do you happen to have the part number for the one you've used?
quote:
Originally posted by JoaoCaldeira
IIRC that will depend on which R1.
For carbed ones, the one from the bike.
For injected, unless you have put the original pump inside the tank (you would have butched the tank, then) you will need one good for 3 bar. Now and
then there is one on eBay. Bosch seems the most used.
Joao
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JoaoCaldeira
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| posted on 22/5/06 at 08:39 PM |
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Got it on the laptop.
I'll post tomorrow.
Joao
PS: My bike is not running yet, so don't trust it blindly (although I'm confident  )
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RichieC
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| posted on 22/5/06 at 10:41 PM |
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quote:
Originally posted by amalyos
Do you need to do this with the Carb Version?
I've connected mine to the MNR loom (but not yet started the engine yet).
Steve
Hi mate, just beware the fuel pump feed from the MNR loom is a permanent 12v with the ign on. It needs the 12v supplied only to prime up the carbs
and then when the pressure drops while running, this is done by the fuel pump relay. Its a black/blue on the R1 loom.
Rgds
Rich
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marc n
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| posted on 23/5/06 at 07:45 AM |
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yep fuel pump must run through the relay on the fuel injected models otherwise the ecu goes to limp home mode
been there and done that
from memory we used the original bike relay spiced into the mnr loom, removeing the original feed
[Edited on 23/5/06 by marc n]
please email rather than u2u
direct workshop email ( manned 8am till 6pm )
www.mnrltd.co.uk enquireys to :-
chrismnrltd@btinternet.com
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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G.Man
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| posted on 23/5/06 at 07:51 AM |
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quote:
Originally posted by marc n
yep fuel pump must run through the relay on the fuel injected models otherwise the ecu goes to limp home mode
been there and done that
from memory we used the original bike relay spiced into the mnr loom, removeing the original feed
[Edited on 23/5/06 by marc n]
Aww be fair marc, we did have a lot of fun trying to solve it...
LMAO
Opinions are like backsides..
Everyone has one, nobody wants to hear it and only other peoples stink!
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marc n
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| posted on 23/5/06 at 07:52 AM |
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please email rather than u2u
direct workshop email ( manned 8am till 6pm )
www.mnrltd.co.uk enquireys to :-
chrismnrltd@btinternet.com
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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amalyos
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| posted on 24/5/06 at 05:36 PM |
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quote:
Originally posted by marc n
yep fuel pump must run through the relay on the fuel injected models otherwise the ecu goes to limp home mode
been there and done that
from memory we used the original bike relay spiced into the mnr loom, removeing the original feed
[Edited on 23/5/06 by marc n]
Still confused
Can I use the MNR loom fuel pump feed for my R1 with CARBS (5JJ)?
Or do I need to connect the R1 loom pump feed?
Help !!!
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marc n
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| posted on 24/5/06 at 05:40 PM |
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hi steve you use the mnr loom
p.s parcel left today
please email rather than u2u
direct workshop email ( manned 8am till 6pm )
www.mnrltd.co.uk enquireys to :-
chrismnrltd@btinternet.com
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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RichieC
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| posted on 24/5/06 at 05:43 PM |
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Hi all,
Not wanting to put a spanner in the works, but the MNR fuel pump feed is perm 12v with the ignition on.
The 12v from the bike loom is switched by the puel pump relay. Is it the pump which controls its feed pressure or the fuel pump relay?
The only real difference I can see is the relay outputs 12v with ignition then continuously when cranking and running.
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marc n
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| posted on 24/5/06 at 05:49 PM |
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the pumps i have fitted have been same as a facet type pump constantly supplied with 12v
best regards
marc
please email rather than u2u
direct workshop email ( manned 8am till 6pm )
www.mnrltd.co.uk enquireys to :-
chrismnrltd@btinternet.com
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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RichieC
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| posted on 24/5/06 at 06:07 PM |
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Ah righty, yeh constant delivery in otherwords. Did you use a filterking reg with them?
I think, bike pumps have a sort of idler and are not constant delivery. Ill know better when I fit the new pump but I expect if it was connected to a
perm 12v feed would flood the carbs if there was no way of shutting off when the floats were full. This of course could be controlled directly by the
bike pump as I cant see how the relay would know the float bowls were full.
Hope that makes sense!
Rgds
Richie
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smart51
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| posted on 24/5/06 at 08:44 PM |
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My R1 pump is fitted to the MNR loom and is on with the ignition. The pump clicks rapidly at first (if the car has been off for a few days) then
slows down and stops. Once it is up to pressure like this then it stays stopped, although once the engine is running, you can't hear the
pump.
I've done almost 3000 miles in 6 months and it's OK so far.
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RichieC
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| posted on 24/5/06 at 09:19 PM |
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Yeh that backs up the theory that its the pump which controls the pressure ie as soon as x amount of pressure is felt in the line to the float bowls,
the pump slows and stops until its needed again.
Rich
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amalyos
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| posted on 25/5/06 at 06:55 AM |
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quote:
Originally posted by marc n
hi steve you use the mnr loom
p.s parcel left today
Cheers Marc.
Steve.
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JoaoCaldeira
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| posted on 25/5/06 at 07:24 AM |
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Although we are all speaking about the R1, "re 2002" and "2002 on" work very differently. Actually the pre 2002 has a fuel
pump relay that the 2002 on doesn't have.
Even so it seems that would be wise to connect the bike loom fuel pump connector to a relay controling the permanently on of the MNR car loom.
Joao
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