Toronado Crank Triggered Ignition
Thread Starter
Registered User
Joined: Dec 2011
Posts: 7,286
Toronado Crank Triggered Ignition
I am pretty sure this is 1977 only, Toronado 403 only
A member writes:
Interesting. Anyone else have a Toro [or anything] other than 1977 model year with Crank Triggered Ignition?
gmcaprala, your CTI dist'r serves only to distribute the spark [and run the oil pump] as far as I know. The spark is triggered by the toothed wheel between balancer and crank pulley. the EXACT timing of the spark is then set by the voodoo within that "computer" box near the car's glovebox- which I hear is more of an analog circuit using engine speed [presumably], MAP [engine Manifold Absolute Pressure], and engine temp, to establish advance at any given time.
Anyone else who can add to the CTI [Crank Triggered Ignition] info, chime in.
A member writes:
Originally Posted by gmcaprala
Ok, now I’m confused again, so, the 1977 403 was the ONLY one with crank triggered ign? I read 77-79’s all had them. I was under the assumption that ALL 77-79 TORONADO ONLY 403’s had them. Mine [1978 Toro] has the under glovebox computer in the car, that is linked to 2 sensors (apparently engine temp and what else I’m not quite sure yet) that are required for the special dist. My dist. has no vacuum advance, or ign advance, it’s more like a computer controlled post-1981 gm dist. than a pre-1981 thats mech. is this a crank driven dist?
gmcaprala, your CTI dist'r serves only to distribute the spark [and run the oil pump] as far as I know. The spark is triggered by the toothed wheel between balancer and crank pulley. the EXACT timing of the spark is then set by the voodoo within that "computer" box near the car's glovebox- which I hear is more of an analog circuit using engine speed [presumably], MAP [engine Manifold Absolute Pressure], and engine temp, to establish advance at any given time.
Anyone else who can add to the CTI [Crank Triggered Ignition] info, chime in.
Old(s) Fart
Joined: Mar 2007
Posts: 50,802
From: Northern VA
Haven't we had this discussion before? Oh yeah, we did:
https://classicoldsmobile.com/forums...oro-403-a.html
MISAR was only installed on the 1977-78 Toronado 403s.
https://classicoldsmobile.com/forums...oro-403-a.html
MISAR was only installed on the 1977-78 Toronado 403s.
Registered User
Joined: Sep 2015
Posts: 1
From: Rochester NY
I’m at the conclusion now that I will be bypassing the MISAR system. I want nothing to do with this overdone, seemingly for nothing, impossible to find parts for, 40-year-old crap. Am I safe in assuming that a Olds 350 HEI will accomplish what I’m looking to do? Thanks to everyone for the help!
Old(s) Fart
Joined: Mar 2007
Posts: 50,802
From: Northern VA
I’m at the conclusion now that I will be bypassing the MISAR system. I want nothing to do with this overdone, seemingly for nothing, impossible to find parts for, 40-year-old crap. Am I safe in assuming that a Olds 350 HEI will accomplish what I’m looking to do? Thanks to everyone for the help!
By the way, I'll point out that HEI technology is ten years older than your "40-year-old crap".
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