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CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
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 Posted: Tue Mar 15, 2005 3:21 pm Post subject: |
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| Ah better slip some in then, do they run off the EEC ok? Ive heard they do, but idle could be suss |
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MarkZE
Fordmods Oompa Loompa
Age:32
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Location: Brisbane QLD, Australia
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| Posted: Tue Mar 15, 2005 3:28 pm Post subject: |
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Yeah I would have to agree about bigger is better on injectors for a turbo engine. Don't bother with anything smaller than about 50 lbs injectors. Around about the 550 cc/min minimum otherwise you will end up upgrading them again once you get a feel for the engine and wind the boost up.
I am on my third set of injectors now.
I had 340 cc/min injectors, maxxed them out, got hold of some 440cc/min injectors and maxxed them out so decided I wasn't messing around the third time and got some 750 cc/min Rochestors and stuck them in there.
Don't worry about idle too much unless you are trying to use a standard ECU. My car idles okay and it has a huge cam as well.
Also running high fuel pressures with little injectors is a good way to make a 600 hp fuel pump into a 400hp one.
Fuel flow capability of the pump changes with the inverse square of pressure it is required to supply. If you increase the working pressure you reduce the flow capability of the pump. This is particularly important when using rising rate regulators.
Always trial adjust your regulator up to the maximum pressure it will see in operation (allowing for rate rise if applicable) then flow your pump while the engine is stopped. Measure the amount of time it takes to get a litre or two of fuel returning to the tank or swirl pot and this needs to be able to keep up with your injectors.
Moral of the story is a 600 hp pump is not necessarily a 600 hp pump when it is pumping fuel at 70 or 80 psi into a rising rate regulator. Try to keep base pressures down around the 35 - 43 psi mark maximum especially if using a rising rate reg or you risk fuel line failures and fuel fires etc. |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
Joined: 05 Nov 2004
Location: Scaaabz WA, Australia
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| Posted: Tue Mar 15, 2005 3:31 pm Post subject: |
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| CHEF wrote: | | Ah better slip some in then, do they run off the EEC ok? Ive heard they do, but idle could be suss |
EMS 8860 will run them fine :p
so you think they will do the job? |
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CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
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| Posted: Tue Mar 15, 2005 3:40 pm Post subject: |
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ah yeah sorry man forgot you use EMS... pfft ecc 
depends on how much more air is going in, i belive they ahve been used on low boost set ups so you might find them ok... You'd get a set for next to nothing from a big pick n pay style wrecker anyway.
And isnt changing injectors fun  |
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CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
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| Posted: Tue Mar 15, 2005 3:42 pm Post subject: |
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| just make sure you buy new Orings... I spent a few hours fiddling with leaky orings... I got a petrol stain on the wall... |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
Joined: 05 Nov 2004
Location: Scaaabz WA, Australia
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| Posted: Tue Mar 15, 2005 3:47 pm Post subject: |
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to go with the other stains too :p
do you know the size of the o rings? |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
Joined: 05 Nov 2004
Location: Scaaabz WA, Australia
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| Posted: Tue Mar 15, 2005 3:50 pm Post subject: |
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| CHEF wrote: |
depends on how much more air is going in, i belive they ahve been used on low boost set ups so you might find them ok... |
with the same fuel pressure as i tho? |
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CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
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| Posted: Tue Mar 15, 2005 3:57 pm Post subject: |
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| yeah, stockreg and pump |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
Joined: 05 Nov 2004
Location: Scaaabz WA, Australia
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| Posted: Tue Mar 15, 2005 7:20 pm Post subject: |
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sweet as, cheers
i look into some wrecked magnas on the weekend |
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sickd
Fordmods - Getting Side Ways
Age:25
Posts: 606
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Location: Melbourne VIC, Australia
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| Posted: Tue Mar 15, 2005 8:02 pm Post subject: |
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| are magna injectors bigger than ef (higher lbs) |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
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Location: Scaaabz WA, Australia
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| Posted: Wed Mar 16, 2005 12:46 am Post subject: |
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| i believe the EF ones are 19lb and the magna ones are 24lb |
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pyroay
Fordmods Audio and Turbo Expert
Age:28
Posts: 2112
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Location: Traralgon VIC, Australia
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| Posted: Wed Mar 16, 2005 6:36 am Post subject: |
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THANKS
Last edited by pyroay on Wed Mar 16, 2005 8:57 am, edited 1 time in total |
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dcstraight
Moderator
Age:30
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| Posted: Wed Mar 16, 2005 7:32 am Post subject: |
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Post has been split  |
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sickd
Fordmods - Getting Side Ways
Age:25
Posts: 606
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Location: Melbourne VIC, Australia
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| Posted: Wed Mar 16, 2005 5:56 pm Post subject: |
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| why wopuld they be bigger |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
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Location: Scaaabz WA, Australia
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| Posted: Wed Mar 16, 2005 7:47 pm Post subject: |
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| dcstraight wrote: | | Post has been split |
cheers
sorry, just got carried away
I got my new manifold on today, sexy, and it is maxing out big time now |
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CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
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| Posted: Sat Mar 19, 2005 9:40 am Post subject: |
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| Whens it hit the dyno man? |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
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Location: Scaaabz WA, Australia
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| Posted: Sat Mar 19, 2005 1:02 pm Post subject: |
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when i get injectors :p
its leaning rite out after 3800rpm!!!!
lol
poor injectors, i feel for them chasing all that air.
i rang a magna wrecker, $80 each for thoes blue tops!!!!
f**k that
any other ideas? |
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CHEF
Fordmods - Getting Side Ways
Posts: 1959
Joined: 06 Nov 2004
Location: Under the flight path of incoming packpackers NSW, Australia
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| Posted: Sat Mar 19, 2005 9:10 pm Post subject: |
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| thats a ripoff! Maybe have a look on wogma |
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SVO XR6
Fordmods - Getting Side Ways
Age:24
Posts: 1680
Joined: 05 Nov 2004
Location: Scaaabz WA, Australia
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| Posted: Sun Mar 20, 2005 11:23 am Post subject: |
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ive been told that increasing the fuel pressure will work for now.
the fact that injectors are looking expensive and i dont want to buy a set now and then another not too far down the track(for turbo), i was thinking about a ajst fuel reg (which will also be used with turbo). But the old trick of crushing the org fuel reg to crank up the pressure mite be the go.
its cheep and im interested in seeing how it goes... apparantly i should try to increase it by 10psi.
i have to find out the propper way to do it first, so any other ideas or how to's, pls say before i f**k this up  |
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Bert
Fordmods - Smokin em up
Posts: 227
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Location: Gold Coast QLD, Australia
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| Posted: Sun Mar 20, 2005 7:16 pm Post subject: |
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Use 2 sockets, one to go over the fuel thread and the other the fit in the channel but clear the vac barb. Put it in a Vice and crush it a LITTLE bit, THEN put it on the car and cheack the fuel pressure and repeat if need be.
You are getting ripped for $80 an injector! |
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