Will these injectors fit?

[luke01]

Will these injectors fit my m20b25....if not, what will (want around the 42# mark)

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=110032591151&fromMakeTrack=true

http://cgi.ebay.com.au/INJECTORS-FORD-HOLDEN-SUPERCHARGER-XR6-TURBO_W0QQitemZ110032579439QQihZ001QQcategoryZ3262 4QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Thanks.

[Blitzkrieg Bob]

What are doing to that little M20?

A stock M20 has something around 15 to 17 in it.

[Ross]

Nothing about 3 bar of boost won't compensate for.

[Jon K]

I run 42# (440cc) injectors from a Ford SVT Cobra in my 525i. They work fine - bosch part #'s

[Alexlind123]

I run 42# (440cc) injectors from a Ford SVT Cobra in my 525i. They work fine - bosch part #'s

Do you really think thats helpful? Obviously that information will be of no use to him if he isnt running a turbocharger.

[BigKriss]

He is running a turbo. (http://www.bimmer.info/forum/showthread.php?t=25651)


Do you really think thats helpful? Obviously that information will be of no use to him if he isnt running a turbocharger.

[Jon K]

Uh alex, retract your quick response - if my car is running them, his car can run them. Turbo or not. If he wanted to run 42# for an NA car, he could - what do you think a turbo car is when it idles? The only issue with running big injectors is, "Are the injectors too big that the pulsewidth is too low (in millisec) that there is STILL too much fuel entering the motor?" And with 42# injectors, even up to 65# - 72# injectors, that is not the case. So, he IS running a turbo, but that's not even the point. You want an injector you can idle and will support your boost level. A 42# injector will do just that. The minimum pulsewidth duration is ~2.0 to 2.1 ms. If your car is still rich at that PW and requires less fuel, the chance of a high impedence injector closing down to 1.5 - 1.7 ms reliably is not likely without high resolution injection control.

[luke01]

so will either of those injectors on ebay physically fit into an m20b25?

[Jon K]

Luke - if they are bosch part numbers they SHOULD fit I dont see why not. But, I specifically used ford injectors - holdens should be the same.

[Jon K]

I'd say go with 42#, the 46# may require you to raise your idle some.

[Alexlind123]

Uh alex, retract your quick response - if my car is running them, his car can run them. Turbo or not. If he wanted to run 42# for an NA car, he could - what do you think a turbo car is when it idles? The only issue with running big injectors is, "Are the injectors too big that the pulsewidth is too low (in millisec) that there is STILL too much fuel entering the motor?" And with 42# injectors, even up to 65# - 72# injectors, that is not the case. So, he IS running a turbo, but that's not even the point. You want an injector you can idle and will support your boost level. A 42# injector will do just that. The minimum pulsewidth duration is ~2.0 to 2.1 ms. If your car is still rich at that PW and requires less fuel, the chance of a high impedence injector closing down to 1.5 - 1.7 ms reliably is not likely without high resolution injection control.

I checked his profile and it didnt say anything about a turbo.

[luke01]

Thanks Jon K.

Sorry Alex, haven't updated profile yet because the conversion isn't 100% complete.