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/ˈpɔrʃə/ PORSH-ə Fan
Join Date: Sep 2014
Location: Lafayette, LA
Posts: 652
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MSD Rev Limit Setting
Installing a MSD Street Fire CD Ignition Box with MSD High Vibration Coil in a '77 911S with stock 2.7 SSIs and M&K 2 in 1 out.
What should I set the Rev Limit at? It comes with a 100 increment adjustment set at 6600rpm stock. What should this be set at? Thanks for the help!
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1984 ROW Carrera Sunroof Coupe Schieferblau 1982 US SC Targa Moosgrun 1977 US 911S Sunroof Coupe - SOLD |
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04-11-2015, 02:17 PM
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Registered
Join Date: Dec 2012
Location: Seattle
Posts: 8,942
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I have been wondering the same thing. I have a bunch if rev limiting chips and not sure which one to use.
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04-11-2015, 02:40 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,141
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Isn't redline annotated on the tach?
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04-11-2015, 02:42 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Set it at 6600 RPM since your engine has cast pistons.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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04-11-2015, 03:53 PM
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/ˈpɔrʃə/ PORSH-ə Fan
Join Date: Sep 2014
Location: Lafayette, LA
Posts: 652
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Thanks Steve! My tach is more of a orange-ish redline block showing a range between 6400 and 6600.
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1984 ROW Carrera Sunroof Coupe Schieferblau 1982 US SC Targa Moosgrun 1977 US 911S Sunroof Coupe - SOLD |
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04-11-2015, 04:27 PM
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911SC Tinkerer
Join Date: Nov 2013
Location: Jacksonville, FL
Posts: 768
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I have the same set up in my '83SC with magnecore 8mm wires and a resistorless rotor. I set mine at 6500 and haven't had an issue with it over reving. I figure a couple hundred below redline wont hurt it.
Its a great set up for the price and beats the hell out of the alternatives. -Steve
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-'83 911SC Coupe SSIs, Dansk GT3, EFI ITB, Instagram: @ Zinnmetallic_sc |
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04-11-2015, 05:27 PM
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