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zetec injector flow rate
lotusmadandy - 26/11/11 at 08:49 PM

I'm setting up the constants on my megasquirt and
need to know the injector flow rate.
Can anyone tell me the rate for standard 2.0 zetec white injectors please?????

Cheers,

Andy

pjay - 26/11/11 at 10:41 PM

If they're 0280155820's then my info has them as 215cc/min (@3bar) 14.5 Ohm High Impedance.

lotusmadandy - 27/11/11 at 07:59 AM

Thanks pjay

Andy.

MakeEverything - 27/11/11 at 09:46 AM

My information says that those are 200cc/m @ 3bar and 4.5ohms impedance pjay.

Andy, what is the little number cast into the injectors?

big_wasa - 27/11/11 at 09:57 AM

My info says 220cc/m but I cant find the source to back it up.(2.0) I do know that all the zetec inj' Ive come across are high Z from the side fed silver tops to the bosch style black tops.

lotusmadandy - 27/11/11 at 12:12 PM

quote:
Originally posted by MakeEverything
My information says that those are 200cc/m @ 3bar and 4.5ohms impedance pjay.

Andy, what is the little number cast into the injectors?




The no on the side is as per pjay's reply 0280155820.
If this is the case,i take it they are high impedence injectors?
My ms is set to low,so maybe this isnt helping me to
make it idle properly.

Andy.

BaileyPerformance - 27/11/11 at 04:40 PM

quote:
Originally posted by lotusmadandy
quote:
Originally posted by MakeEverything
My information says that those are 200cc/m @ 3bar and 4.5ohms impedance pjay.

Andy, what is the little number cast into the injectors?




The no on the side is as per pjay's reply 0280155820.
If this is the case,i take it they are high impedence injectors?
My ms is set to low,so maybe this isnt helping me to
make it idle properly.

Andy.


Hi Andy,

The stock injectors are 200cc HIGH impedance. Set MS for PWM current limit to 100%, injector opening time to 0.900.

The above is not super critical, any error in the injectors flow rate can be compensated when tuning the VE table, as long as its not a back yard out.

lotusmadandy - 27/11/11 at 05:04 PM

Cheers Dale,i will set it tomorrow.

Andy

pjay - 27/11/11 at 05:19 PM

Hi - got the info as follows (which has proved accurate in the past). Definitely High Impedance 14.5 ohms not 4.5!:



would agree though that other sources have it at 200cc/min (@3bar):

http://www.injectorcleaning.co.uk/flow.htm

As BaileyPerformance says not too critical - as long as you're not right on the limit of duty cycle.

[Edited on 27/11/11 by pjay]

lotusmadandy - 27/11/11 at 05:33 PM

quote:
Originally posted by pjay
Hi - got the info as follows (which has proved accurate in the past). Definitely High Impedance 14.5 ohms not 4.5!:



would agree though that other sources have it at 200cc/min (@3bar):

http://www.injectorcleaning.co.uk/flow.htm

As BaileyPerformance says not too critical - as long as you're not right on the limit of duty cycle.

[Edited on 27/11/11 by pjay]



Thats a useful guide to have.Cheers pjay.

Andy

pjay - 27/11/11 at 07:09 PM

Assuming it's accurate! I guess best thing to say is tread carefully with this sort of info and rely on people's actual experience.

I'm beginning to think it would be useful to have a way of roughly verifying flow rate - 200 vs. 215 is big difference when run for 5 minutes (let's say) - would just need something other than petrol to test with!

Need something with similar density, viscosity etc.

MakeEverything - 27/11/11 at 07:29 PM

quote:
Originally posted by pjay
Assuming it's accurate! I guess best thing to say is tread carefully with this sort of info and rely on people's actual experience.

I'm beginning to think it would be useful to have a way of roughly verifying flow rate - 200 vs. 215 is big difference when run for 5 minutes (let's say) - would just need something other than petrol to test with!

Need something with similar density, viscosity etc.


My information is tested, and is done with Heptane which is even more flammable than petrol. The injectors are connected to a fuel rail and energised for a timed 30 second period to inject the heptane into calibrated tubes. I thought about making a DIY version of this using a microsquirt system as the driver, but never got round to it. The system that is used for testing the injectors at the moment costs around £7k and belongs to someone else.

pjay - 27/11/11 at 08:04 PM

Very nice bit of kit to have access to! Do you accept injectors by post?

Was also thinking of MS to drive - IIRC it has an injector test facility.