You will need the swirl pot fitted and the high pressure pump will need
to be level or below the outlet from it.
Use the low pressure pump to fill the swirl pot, the return from the top
of the swirl pot back to the tank.
Then the outlet from the swirl pot into the high pressure pump and the
return from the engine either back into the top of the swirl pot
(easiest) or back to the fuel tank.
Jim
On 01/06/2011 17:14, Mark Miles wrote:
Cheers Jim, Yes I am using the original tank. I don't have an LP pump
at the moment so will have to source one. I will have a look at the
scrapyard tomorrow morning and see what suitable donor I can find for
the pump. If I put a low pressure pump in will I be able to leave the
HP pump mounted on the bulkhead?
Mark.
/*Mark Miles*/
/Manager/
/Bar Square/
/8 Market Place/
/Wokingham/
/Berkshire/
/RG40 1AL/
/
/
/07522 67 60 57/
------------------------------------------------------------------------
*From:* Jim Hearne <[email protected]>
*To:* [email protected]
*Sent:* Wed, 1 June, 2011 16:40:27
*Subject:* Re: [Quantum Owners] Re: 2+2 Zetec conversion
Hi Mark,
A empty HP pump won't lift fuel any height at all, a few inchs if you
are lucky.
Once it's primed it will lift higher but if that fuel drains out or
you run out of petrol you will have to prime it again.
So it needs to be below the level of the fuel in a near full tank.
Have you got a low pressure pump at the moment ?
Have you still got the original carb petrol tank ?
Jim
*From:* Mark Miles <mailto:[email protected]>
*Sent:* Wednesday, June 01, 2011 4:25 PM
*To:* [email protected]
<mailto:[email protected]>
*Subject:* Re: [Quantum Owners] Re: 2+2 Zetec conversion
The engine was a 1.4cvh. The hp pump is mounted some way above the
fuel tank, could this be why it isn't drawing fuel through? It was
mounted in the engine bay in order to keep the high pressure lines
as short as possible. Should I move this to below the level of the
fuel tank so it has a head of fuel to prime it? The swirl pot I
have seems huge, it has 4 pipes into it and no instructions. It
hasn't been fitted yet.
Mark
/*Mark Miles*/
/Manager/
/Bar Square/
/8 Market Place/
/Wokingham/
/Berkshire/
/RG40 1AL/
/
/
/07522 67 60 57/
------------------------------------------------------------------------
*From:* Jim Hearne <[email protected]>
*To:* [email protected]
*Sent:* Wed, 1 June, 2011 9:10:54
*Subject:* Re: [Quantum Owners] Re: 2+2 Zetec conversion
I found my Zetec saloon exhaust a bit too noisy with just one
large silencer at the rear of the system (though it is a stainless
Magnex system), and acquired a 4-2-1 downpipe with a small
silencer on it where the cat would be which will hopefully help.
Was the old engine (a 1.4 CVH wasnt't it) fuel injected ?
If not then there won't be a lift pump in the tank.
If you try running the high pressure pump directly from the fuel
tank you will suffer fuel starvation on corners and roundabouts
when the fuel level gets below half a tank or so.
You either need to change the tank for an injection one with an
internal swirl pot or fit an external swirl pot with a low
pressure feed pump and a high pressure fuel pump.
If you feed the fuel return from the engine back into the swirl
pot then it won't matter that the high pressure pump is a lot
higher flow than the low pressure pump.
There is a school of thought though that it's better to feed the
engine return into the fuel tank to keep the fuel cooler as you
aren't recycling the excess fuel between the engine and swirl pot.
Jim
*From:* Mark Miles <mailto:[email protected]>
*Sent:* Tuesday, May 31, 2011 9:26 PM
*To:* [email protected]
<mailto:[email protected]>
*Subject:* Re: [Quantum Owners] Re: 2+2 Zetec conversion
Hi Chris, the exhaust hasn't been done yet... the 4 - 2 - 1
that I have doesn't fit the engine. I have the stock manifold
on there at the moment. I bought the downpipe with lambda but
minus cat from a scrappy the other day. today I got the bits
to make the rest of the exhaust. How much do you want for the
pipe you have? The exhaust that is about to go on is going to
be cobbled together from an escort downpipe, puma middle
section and the back boxes from a puma sport... the polite
word is hybrid!!
I managed to get the coil pack, exhaust bits and road speed
sensor for £40 so quite pleased with that. We now have a spark
but currently have no fuel getting through. I suspect that the
lift pump has been disconnected from power somewhere during
the mod. Just trying to find where in the loom I need to
reconnect the power for this. I have concerns about whether
this is going to be man enough to supply the hp pump (from a
3.0 senator!) or whether to try to remove the lift pump
altogether. It is top mounted and I don't really want to drop
the fuel tank if I can avoid it.
Mark
/*Mark Miles*/
/Manager/
/Bar Square/
/8 Market Place/
/Wokingham/
/Berkshire/
/RG40 1AL/
/
/
/07522 67 60 57/
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IMPORTANT NOTE: All information presented herewith is provided on an
"As Is" basis, without warranty or the implication thereof. Neither
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