 Rev Limiter, Anyone running them? What kind? |
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| ww914 |
 May 12 2013, 06:15 PM
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914 Convert  Group: Members Posts: 435 Joined: 29-September 11 From: Central Coast, CA Member No.: 13,621 Region Association: Central California  |
I don't trust my tach and my rev light died. Thinking of installing a rev limiter. What do you guys think?
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| McMark |
May 14 2013, 11:00 PM
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Fuel mixture at idle is always a bit erratic because of low flow velocity and low mixture 'swirl'. The MSD and Mallory 6AL will fire the spark plug multiple times instead of just once. Those multiple strikes increase the chances that the poor mixture will actually ignite. This function goes away around 3000 rpm because 1) the coil can't support it and 2) it wouldn't have much affect at those RPM anyway due to proper air fuel mixture/port velocity/swirl.
The increased voltage to the coil will allow for larger spark plug gaps (as Aaron mentioned) which increases the size/length of the spark. A longer spark comes into contact with more fuel mixture, and also increases chances of ignition. |
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Posts in this topic
ww914 Rev Limiter May 12 2013, 06:15 PM
wndsrfr
I don't trust my tach and my rev light died. ... May 12 2013, 07:51 PM SirAndy Same here, came build-in with the engine brain ...... May 12 2013, 09:39 PM koozy If you have a distributor, just run a simple rev l... May 12 2013, 11:18 PM McMark He's got a Mallory. No rev-limiting rotor.
... May 12 2013, 11:34 PM koozy Replacing the shift light is an option I'd con... May 13 2013, 12:05 AM
ww914
Replacing the shift light is an option I'd co... May 13 2013, 06:33 PM 914z
[quote name='koozy' post='1863196' date='May 12 2... May 23 2013, 01:59 AM Randal If you are running on the edge at an autox it... May 13 2013, 09:32 PM SirAndy And the bigger and more well placed (in line of si... May 13 2013, 09:37 PM Randal
And the bigger and more well placed (in line of s... May 14 2013, 11:36 AM wobbletop MSD-6AL May 14 2013, 12:08 PM yeahmag Mallory 6AL May 14 2013, 04:42 PM ww914 What are the advantages of either MSD or Mallory i... May 14 2013, 04:46 PM yeahmag The Mallory 6AL (my preferred unit) has a built in... May 14 2013, 05:00 PM Matt Romanowski
The Mallory 6AL (my preferred unit) has a built i... May 15 2013, 06:47 AM toadman Are the MSD and Mallory units you are talking abou... May 16 2013, 08:29 PM yeahmag I only see them in carb'ed motors with motor w... May 16 2013, 09:17 PM Downunderman I run two shift lights, upshift set at 7,100 and d... Jun 2 2013, 07:43 PM MikeSpraggi MSD-6AL. Works for me for the time being. Jun 11 2013, 03:45 PM |
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