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  #1  
Old 07-26-2012, 10:14 AM
dc2x4drvr dc2x4drvr is offline
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Default Retrofit early ready to run with rev limiter

If I buy a new module with built in rev limiter, is it "plug & play"?
Thanks
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Old 07-26-2012, 12:22 PM
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msdtech1955 msdtech1955 is offline
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typical ready to run distributor.( just need a coil and 12volts)
Attachment 2289


RPM LIMIT AND Tachometer Informati on
Tach Signal: The Ready-to-Run Distributor features a Green Tach Output wire which provides a clean
signal for most tachometers and even some aftermarket fuel injection systems. The signal
output is a 12 volt square wave, 20 duty cycle. This wire is also responsible for programming
the built-in rev limiter.
Rev Limiter: The Ready-to-Run Distributor has a built-in rev limit that can easily be adjusted from 2,000 rpm
to over 10,000 rpm. The default is 10,000 rpm. To set the rev limiter, run the engine to half the
desired rpm then ground the Green Tach wire (a jumper is supplied) for approximately one
second. Every time the key is turned to the On position, the tach will display the programmed
rpm limit. See page 8 for the programming procedure
PROGRAMMING THE REV LIMIT
A tachometer is required to set the rev limit. The limit is programmed by
running the engine at half the desired rpm, then momentarily grounding
the Green tach output wire from the MSD. A Green jumper wire is
supplied to connect to the tach with another tee-splice coming off to use
for programming. A switch may also be installed to ease adjustments of
the limiter (Figure 15). The default rpm limit is 10,000 rpm and the limit
is adjustable from 2,000 - over 10,000 rpm..
1. Start the engine and bring the rpm to half the desired rev limit (for a
6,000 rpm limit, raise and hold the rpm to 3,000).
2. While holding the rpm steady, short the Green tach wire to ground
for approximately one second. Note that the tach will go to zero
while grounded.
3. The tach will now display the programmed rev limit amount for two
seconds. If this value does not register on the tach, repeat the procedure and try a different ground
source.
4. To confirm the rev limit value, turn the ignition key to the On position (without cranking the engine). The
rev limit value will be displayed for two seconds on the tachometer.
Note: This rpm confirmation only displays when the Green wire is being used to trigger the tachometer.
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Old 07-26-2012, 02:28 PM
dc2x4drvr dc2x4drvr is offline
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My question is: can I retrofit an older ready to run distributor with the rev limiter feature by installing a new module in place of mine?
I'm aware of how the setup works.

Last edited by dc2x4drvr; 07-26-2012 at 02:31 PM.
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Old 07-27-2012, 06:46 AM
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msdtech1955 msdtech1955 is offline
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Quote:
If I buy a new module with built in rev limiter, is it "plug & play"?
Thanks
info needed based on the original question.

1) depends on what distributor you have?

2) is it chevy-ford-dodge?

3) if it is a ford...you will have to press of the gear to remove shaft.

4) what is the part number?
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Old 07-27-2012, 09:24 AM
dc2x4drvr dc2x4drvr is offline
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MSD p/n 8529, Olds 455
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Old 07-27-2012, 10:17 AM
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msdtech1955 msdtech1955 is offline
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ready to run module for your distributor is a

asy 19970---$83.60

cap and rotor kit ---84335 (red)
http://www.msdignition.com/product.a...97&terms=84335

black cap only -84333
http://www.msdignition.com/product.a...95&terms=84333

rotor only --8467
http://www.msdignition.com/product.a...539&terms=8467

advance spring kit --8464
http://www.msdignition.com/product.a...533&terms=8464

replacement weighths --8628
http://www.msdignition.com/product.a...765&terms=8628

replacement harness--(rtr -) 88621

replacement vacuum cannister---8463
http://www.msdignition.com/product.a...531&terms=8463

replacement advance lock out -- 8468
http://www.msdignition.com/product.a...545&terms=8468

replacement shaft:
asy 24662 ( 35.00)

Last edited by msdtech1955; 07-27-2012 at 10:20 AM.
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Old 07-27-2012, 02:50 PM
dc2x4drvr dc2x4drvr is offline
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Thanks very much!
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