Using a HEI 4 module as conditioner for a 36-1 wheel

eliotmansfield · Post by **eliotmansfield** » Mon Apr 24, 2006 2:08 am

Hi,
Chevy V8, Currently running extra 24s9, v2 pcb. With a HEI Dizzy. Has two HEI modules, one for the VR, one for the coil - probably what you would call 'classic hei' setup - all working fine.

I would like take my timing from the crank rather than the dizzy. Once I’ve mounted my trigger wheel, Given that I already have a 4 pin HEI module could I use that to condition my VR signal instead having to build the LM1815 circuit (twice in my case, I as usually carry a spare ECU).

thanks,

Post by **jsmcortina** » Mon Apr 24, 2006 2:49 am

The HEI4 is not up to the job of conditioning the VR sensor with a 36-1 wheel. It is 9x the frequency it was designed for.

James

eliotmansfield · Post by **eliotmansfield** » Mon Apr 24, 2006 3:07 am

Thanks James, Had a feeling that may be the case - hence the post.
I guess all the components can be sourced from maplin/rs

Post by **jsmcortina** » Mon Apr 24, 2006 5:05 am

Not sure about Maplin or RS for the LM1815N, but certainly Farnell.

James

krisr · Post by **krisr** » Tue Apr 25, 2006 5:21 pm

The V3 vr circuit conditioner should be adequate for a 36-1 wheel?