Low cost rev-limiters?
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
Likes: 79
From: central FL, near the beach.
Low cost rev-limiters?
I'm thinking of adding my own rev-limiter circuit to my MSD shift light.
Just a relay that puts a low ohm resistor from coil neg. to ground. Will induce severe misfire.
Any other ideas?
Just a relay that puts a low ohm resistor from coil neg. to ground. Will induce severe misfire.
Any other ideas?
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Re: Low cost rev-limiters? (Matt Gruber)
I wouldn't save money on a good rev limiter.. Especially in my case - when powershifting - I need a rev limiter that works good... and the limiter in the MSD 6AL works just perfect...
Team Owner
Joined: Apr 2001
Posts: 54,204
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From: S.W. Ohio. . . . . . NRA Life Member
Re: Low cost rev-limiters? (Matt Gruber)
is this for your 1972?
If you're still running points in your stock distributor, you can buy the Crane pointless igintion conversion module. It has a built-in selectable rev limiter.
If you're still running points in your stock distributor, you can buy the Crane pointless igintion conversion module. It has a built-in selectable rev limiter.
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
Likes: 79
From: central FL, near the beach.
Re: Low cost rev-limiters? (Mike Mercury)
actually it's for my 61. been using the shift light and it works great, but i am thinking of a solid cam and that could make revs way too high on a missed shift. it has electronic ignition. That crane is ok i guess, but i won't use that type of trigger
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
Likes: 79
From: central FL, near the beach.
Re: Low cost rev-limiters? (GrandSportC3)
well oliver
after reading over and over how guys here wire their coil with too much resistance,and then complain IT WONT REV UP
i figure a rev-limiter doesn't have to be fancy or expensive to be 100% reliable.
I've got a wire wound 8 ohm variable resistor(speaker fader) and some relays from old vcr/stereos so it won't cost a cent to hook it up and try.
And it can double as an anti-theft device :cool:
after reading over and over how guys here wire their coil with too much resistance,and then complain IT WONT REV UP
i figure a rev-limiter doesn't have to be fancy or expensive to be 100% reliable.
I've got a wire wound 8 ohm variable resistor(speaker fader) and some relays from old vcr/stereos so it won't cost a cent to hook it up and try.
And it can double as an anti-theft device :cool:
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Re: Low cost rev-limiters? (Matt Gruber)
well oliver
after reading over and over how guys here wire their coil with too much resistance,and then complain IT WONT REV UP
after reading over and over how guys here wire their coil with too much resistance,and then complain IT WONT REV UP
(50000 Volt HEI + MSD 6AL)
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Joined: Mar 2001
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From: Living in the Hartland
Re: Low cost rev-limiters? (Matt Gruber)
Few things that worked for me in the past:
1. Floor mat wedged under the gas pedal.
2. Throttle cable bracket moving.
3. Fabbed up cold air intake duct work blocking tb blade from fully opening.
Of course these where all unintentional rev limiters but worked none the less.
:)
1. Floor mat wedged under the gas pedal.
2. Throttle cable bracket moving.
3. Fabbed up cold air intake duct work blocking tb blade from fully opening.
Of course these where all unintentional rev limiters but worked none the less.
:)
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Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
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From: central FL, near the beach.
Re: Low cost rev-limiters?
i just wired up an old relay for a test.
i will dial in mega mis-fire and then replace the pot. with a fixed resistor.
assuming of course it works :lurk:
i will dial in mega mis-fire and then replace the pot. with a fixed resistor.
assuming of course it works :lurk:
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
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From: central FL, near the beach.
Re: Low cost rev-limiters? (Matt Gruber)
:cool: IT WORKS!
for a test i set my light to 3300
i floor it and it, in neutral, zooms up to 3500, comes back to 3300, won't go past 3500 :nono:
If anybody wants the resistor value, e-mail me.
a $95 rpm limiter in 1 hour with a relay from an old VCR and 1, 50¢ resistor :cheers:
for a test i set my light to 3300
i floor it and it, in neutral, zooms up to 3500, comes back to 3300, won't go past 3500 :nono:
If anybody wants the resistor value, e-mail me.
a $95 rpm limiter in 1 hour with a relay from an old VCR and 1, 50¢ resistor :cheers:
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
Likes: 79
From: central FL, near the beach.
Re: Low cost rev-limiters? (jamesx0)
the resistor isn't added until the MSD rpm swich reaches the rpm i set. the relay i added does the switching when triggered.
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,053
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From: central FL, near the beach.
Re: Low cost rev-limiters? guys
i need both a shift light AND a rev limiter :rolleyes:
the shift rpm is lower than the limit.
So right now i enjoy the shift light :cool: and don't want to convert it into a rev-limiter :nono: i want BOTH!
Seems the lowest cost to do this is to use the summit tach/w/shift light $39 and hook my rev-limiter to the light.
Example:
5500 shift light
6200 rev-limit
Two devices required :rolleyes:
the shift rpm is lower than the limit.
So right now i enjoy the shift light :cool: and don't want to convert it into a rev-limiter :nono: i want BOTH!
Seems the lowest cost to do this is to use the summit tach/w/shift light $39 and hook my rev-limiter to the light.
Example:
5500 shift light
6200 rev-limit
Two devices required :rolleyes: