Speed Limiter

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Kent124

Speed Limiter

Post by Kent124 »

Do late 1970/early 1980 Fiats have a speed limiter (governor)? Are these easy to remove?
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TulsaSpider
Posts: 1547
Joined: Tue Apr 29, 2008 7:33 pm
Your car is a: 1978 Spyder 124 2L
Location: Tulsa, Ok

Re: Speed Limiter

Post by TulsaSpider »

Yep it's called the engine!It definitely limits your speed! Never heard of putting a speed limiter on a 4 banger
1978 Spyder 1800 make that 2L! Finally making real progress!
TX82FIAT
Posts: 1814
Joined: Mon May 03, 2010 11:04 am
Your car is a: 82 Fiat Spider 2000 CSO
Location: San Antonio

Re: Speed Limiter

Post by TX82FIAT »

Kent124, I could be wrong on this but I have never come across a governor or read anything about one. Thinking about where one would be hooked up to function, I would have to say No. These cars were never really sold in the states with significant HP that would warrant a limiter. I'm still looking for the "Spitzer valve". When I find it I'll get some gauze, 20 weight ball bearings and have a go at increasing speed.

Ray
Buon giro a tutti! - enjoy the ride!

82 Fiat Spider 2000
03 BMW M3
07 Chevy Suburban
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bradartigue
Posts: 2183
Joined: Thu Sep 20, 2007 2:35 pm
Your car is a: 1970 Sport Spider
Location: Atlanta, GA

Re: Speed Limiter

Post by bradartigue »

Kent124 wrote:Do late 1970/early 1980 Fiats have a speed limiter (governor)? Are these easy to remove?
I don't know why the question was asked but if you sense the car isn't accelerating fast enough...

1979-on they have a vacuum operated distributor advance that, if not connected and operating properly, significantly reduces the acceleration of the cars. Verify that it works. Ignore people who say you can manually advance the car to compensate; it is a cheap part, replace it if broken.

1979-80 they have a Weber ADHA carburetor. The ADHA is a tiny carburetor with a vacuum operated secondary and a pathetic intake manifold. If the secondary is not operating then the car will have an artificial limit (no secondary throttle).

1975-on they have a Weber ADFA carburetor. It has a mechanical secondary but isn't a performance carburetor. If the secondary is gummed up it might not open all the way; worth inspecting and cleaning. This carb (32ADFA), installed on the 1979/80 and with the 1800 manifold perform much better than the ADHA on the "boat anchor" 2000cc manifold.

A camshaft that is retarded a tooth on the belt can really zap the performance.

Incorrect timing can zap it.

Bad ignition components can zap it.
theporsche

Re: Speed Limiter

Post by theporsche »

TX82FIAT wrote:I'm still looking for the "Spitzer valve". When I find it I'll get some gauze, 20 weight ball bearings and have a go at increasing speed.

Ray
Don't forget the antifreeze. Prestone... ...No better make that Quaker State.

B
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Zippy
Posts: 585
Joined: Mon May 25, 2009 10:06 pm
Your car is a: 1978 Fiat
Location: Real Close to Milton, WA

Re: Speed Limiter

Post by Zippy »

Kent124 wrote:Do late 1970/early 1980 Fiats have a speed limiter (governor)? Are these easy to remove?
Mine is blonde and sits in the seat next to me. Also, any sideways motion engages the fierce glare and shriek. :lol:
Easy to remove but the consequences are dreadful. :mrgreen:
1978 Spider
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engineerted
Posts: 531
Joined: Tue Feb 21, 2006 9:57 pm
Your car is a: 1974 124 spider
Location: Farmington Hills, MI

Re: Speed Limiter

Post by engineerted »

Zippy, just remove the passengers seat and you have instant warp speed!!

Is this guy taking about a speed limiter or rev limiter.

Ted
Ted
1978 124 Spider, Complete Restoration
1974 Fiat 124 F Production Race car
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kmead
Posts: 1069
Joined: Sat Aug 02, 2008 9:24 pm
Your car is a: 1969 850 SC 1970 124 SC 85 X19
Location: Grand Rapids, MI

Re: Speed Limiter

Post by kmead »

Its not the engine, its the body. If the body was more aerodynamic the car could go faster with the engine it has. Just grab some bondo and turn it into a big teardrop and it will be able to go much faster...
Karl

1969 Fiat 850 Sports Coupe
1970 Fiat 124 Sports Coupe
1985 Bertone X1/9
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