They made the GS450L until the late 80's... question.

[grcamna2]

What model year GS450L had a factory rev limiter so it wouldn't spin past 9500 rpm ?

[Nessism]

In order to implement a rev limited the advance curve would have to be in the ignitor.

[grcamna2]

What you're saying is a bike with the rev limiter would not have a centrifugal advance mechanism like the GS ?

[LAB3]

What you're saying is a bike with the rev limiter would not have a centrifugal advance mechanism like the GS ?

I'm pretty darn sure my bike doesn't have a centrifugal advance, the ignition signal box takes care of that. On my 450 the torque drops off at 8k and rarely gets over 9k, upshifting gets it back where the torque (and smoothness) is.

[Nessism]

What you're saying is a bike with the rev limiter would not have a centrifugal advance mechanism like the GS ?

Correct. (this message is too short...)

[grcamna2]

Correct. (this message is too short...)

Ok, Thank you

[Steve]

Ignitors with the built-in advance curve appeared in some models in the mid-'82 production run, most models had them by the '83 model year.

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[grcamna2]

Ignitors with the built-in advance curve appeared in some models in the mid-'82 production run, most models had them by the '83 model year.

.

Thanks Steve,that helps. 👍

[Nessism]

The question I'd like to know is: does the later year 450's have a rev limiter?

[grcamna2]

The question I'd like to know is: does the later year 450's have a rev limiter?

That is also what I would like to know. My 82' GS450TXZ doesn't and it has a centrifugal advance unit behind the pulse generators/points plate. I looked up online and noticed all the 1983' GS450 models only have the rotor and hold down bolt w/o the centrifugal advance mechanism.

[LAB3]

That is also what I would like to know. My 82' GS450TXZ doesn't and it has a centrifugal advance unit behind the pulse generators/points plate. I looked up online and noticed all the 1983' GS450 models only have the rotor and hold down bolt w/o the centrifugal advance mechanism.

OK, since we both have the same identical bike I did some digging. According to the parts fische there is indeed what appears to be a mechanical advance mechanism behind the plate you described, I've never had mine off so I never did see it. The updated part of the Haynes manual says it requires no maintenance and the wording being somewhat vague makes the assumption that the advance curve is taken care of by the signal generator. As to any mid year part switching, my serial number shows my bike being assembled in June of 81 indicating it was an early production run for 82. Granted, this has nothing to do with your original question but learning something new or reinforcing what you already assume as true is always a good thing.

[Gorminrider]

The only suspicion I've ever heard of limitation of anykind is in models made for some countries in Europe...where there are "Kilowatt" limitations on licences.

My own 81 gsx 400 models occasionally show as "27hp" or something from european sources instead of the actual claimed 44 or so

I don't know what method they used for Suzukis but from here (https://www.visordown.com/features/l...-cant-restrict)

the last set of licence laws forced many people to restrict their bikes to 33bhp. Normally, if there’s no manufacturer’s kit available, the workshop will limit the maximum throttle opening or fit an air-restrictor, either using data they already have or even by putting your bike on a dyno and tweaking the power down