W60 injector rate

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W60 injector rate

Postby TNT76 » Mon Feb 04, 2008 10:48 am

Has anyone used 28lb gen III injectors with a workshop module (W60), and if so what injector rate to use.
A mate is building up a 355 for his VT clubby and I'd like to build up a tune which will be in the ballpark to fire it up on.
Any help appreciated.
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Postby GTS215i » Mon Feb 04, 2008 7:20 pm

Blue tops 775 - 24lb - injector rate 0.1335
Red tops 945 - 30lb - injector rate 0.1095
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Postby clubby5000i » Mon Feb 04, 2008 9:26 pm

28lbs - 294cc/min - injector rate for 5 litre = 0.0937
28lbs - 294cc/min - injector rate for 5.7 litre = 0.1073

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Postby DerekBell » Tue Feb 05, 2008 6:44 pm

As you can see above the injector rate basically means nothing. If you find you run out of VE table you can adjust the injector rate by say 10%, and then you need to adjust all the VE table by 10% also to bring it back to where it was. It is a little tedious, but if you use the figures mentioned and find you don't have enough VE table to do what you need, you will need to readjust the injector rate as long as you don't run out of injector pulswidth..
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W60 Injector Rate

Postby PVE » Tue Feb 05, 2008 9:05 pm

This is what I did for my S/C 355
Used W61 CFZD with correct MAF table (e.g. 65mm or 75mm or 85mm)
[I used a VZ 85mm MAF and created a frequency table].
You need to adjust FUL:OUT:INJRAT to suit your injector size. The Holden 5.7L default is 325 MSEC/GM (milli seconds per gram). These injectors were rated at about 25 lb/hr. [The 5.0L is 362.5 MSEC/GM with 19 lb/hr injectors]. I derived the required MSEC/GM based on 42 lb/hr injectors and the available fuel pressure. In this case it was 160 MSEC/GM.
You can then check if this is correct by loading the engine to 400 MGC at say 2000 RPM and looking at the Gauge Screen to see if your Short Term Fuel Trim is at 100%. Make sure your Long Term Fuel Trim is disabled. If it is above or below 100% raise or lower the Injector Rate. You can then check the result in your Gauge Screen.
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Postby TNT76 » Wed Feb 06, 2008 11:19 am

Thanks for the replies. That will get me into the ballpark and I can fine tune it on the dyno afterwards.

Another thing, has anyone got an email response from Alan lately? I will give it another couple of days then try ringing, I try to leave ringing him to last, as I know he is busy.
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