[Diy_efi] (no subject)

[Dustin Lof]

The balancers will have the same balance, there will
be a large weight on the inside of the balancer, just
make sure it is the same size, The balance is the same
up until the 95 model year.  You can see a huge
difference is the size of the weights.  Be careful
working with 95 model year parts because they used
first and second series engines in cars. 

--- WopOnTour <wopontour at hotmail.com> wrote:

> IIRC the only difference is the older GN engine used
> an older (84-87) C3I ignition system that utilized a
> symmetrical 3X hall-effect crank sensor and cam
> sensor in the old distributor bore. But if your
> using an 89 engine it will have "Fast Start" C3I
> which uses an asymmetrical 3X and 18X hall-effect
> crank signals (the cam sensor is not necessary for
> ignition but used for SFI). IMO the newer ignition
> would be superior so maybe you should consider using
> the newer 1988 ECM as well? IIRC the GNs were a bit
> of a "pet" of Bruce Plecan. You may wish to contact
> him about your options.Bruce's email can be located
> on the top of his GN Chiptips web page here
> http://www.gnttype.org/techarea/chips/chiptips.html
> Regards
> WopOnTour
> ----- Original Message ----- 
>   From: Kristy 
>   To: diy_efi at diy-efi.org 
>   Sent: Saturday, November 19, 2005 6:03 PM
>   Subject: [Diy_efi] (no subject)
> 
> 
>   I am building a 87 GN Fiero and plan to use a
> 1227148 ecm but the engine is a 89 so i can have the
> roller cam. The harmonic balancer on the 87 3800
> engine is different from the 89. The 87 only has one
> ring for the crank sensor and the 89 has two does
> the ignition module i will have to use the balancer
> from the 89 because on the internal engine
> differences. If I use the module from the 89 with
> the 87 ecm will the ecm get the right signal????????
> 
> 
>
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