[Diy_efi] RE: Nissan KA24E ECU and CAS

[Buck Williams]

iff itss a four strokeee engiane , the cam will alwalys turn half crankshaaaaaft rpm, buck

> From: jlg-sep at comcast.net> To: diy_efi at diy-efi.org> Subject: Re: [Diy_efi] RE: Nissan KA24E ECU and CAS> Date: Wed, 10 May 2006 20:16:42 -0400> > Not to state the obvious, but if its a cam sensor, won't it be turning> at half the engine speed?  Meaning, its good to 7200RPM at the> crank?  Or, is this an OHC motor with cams that are geared 1:1> to the crank?  I'm an SBC/BBC guy, so my knowledge of ANYTHING> with overhead cams is just about nil.> > -Scott> > ----- Original Message ----- > From: "Torbj?rn Forsman" <torbjorn.forsman at gengas.nu>> To: <diy_efi at diy-efi.org>> Sent: Wednesday, May 10, 2006 5:06 PM> Subject: Re: [Diy_efi] RE: Nissan KA24E ECU and CAS> > > > Please note that the limit of 3600 rpm only is a test condition for the > > datasheet and that it is referred to the "reference target". Worst case of > > those dimensions would be a wheel with 102 mm diameter and 25 teeth, this > > will give an output signal of 1,5 kHz at 3600 rpm.> > In most cases, with those teeth or notches that are used in practice, a > > such sensor should perform well at much higher rpms.> > The minimum tooth width of 2,54 mm would give a pulse width of about 130 > > us at 3600 rpm of the reference target. A good idea would be to design the > > teeth so that the pulse width at maximum rpm always is more than 130 us. > > Or, as an alternative, obtain a sample of the sensor, make som test wheels > > and try them out in a lathe or bench drill!> >> > Best regards> >> > Torbj?rn Forsman> >> > Holt, Brent D PE431 wrote:> >> Hi Hugh,> >> I'm a newbie in the group... Just looking into doing some custom> >> EFI set-ups for your typical junkyard turbo systems... Name is Brent.> >>> >> Anyway, I noticed on the spec sheet you attached that the sensor's max> >> RPM is 3600. How do you plan to account for such a low rev? -Brent> > _______________________________________________> Diy_efi mailing list> Diy_efi at diy-efi.org> http://lists.diy-efi.org/mailman/listinfo/diy_efi