 Mallory Hyfire rev limiter, Which is correct? New autometer tach or Mallory box |
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| TGM |
 Jan 13 2007, 07:08 PM
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Member  Group: Members Posts: 54 Joined: 25-August 03 From: Eldersburg, MD Member No.: 1,071  |
My Hyfire box is set at 6500 for rev limit but is kicking in at around 5750 rpm's according to my new autometer tach. Here is some background:
Stock tach was cutting out around 6K (needle drops to zero) then after a few more seconds at full throttle the rev limiter would kick in. I concluded that the stock tach was reading fairly accurately. Tach is wired to tach output from MSD box not the coil. Stock tach worked fine at lower revs but exhibited the typical excessive bouncing. Everything I read suggested replacing stock tach with Autometer but now the rev limiter is activating at 5750. Should I hook up diagnostic tach to check the new autometer? Will this type of tach work with an MSD box? Sure as heck don't want to over rev my new Raby 2270. What do you guys think? T.G. |
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Posts in this topic
TGM Mallory Hyfire rev limiter Jan 13 2007, 07:08 PM
Aaron Cox so is it a mallory hyfire box? or an MSD 6al? simi... Jan 13 2007, 07:11 PM TGM yeah its a mallory. checked the switches for 4 cy... Jan 13 2007, 07:32 PM Aaron Cox you TEE into the trigger signal to the box....
it... Jan 13 2007, 07:50 PM Mueller
My Hyfire box is set at 6500 for rev limit but is... Jan 14 2007, 01:21 AM
TGM I've now wired up the tach using the tach outp... Jan 14 2007, 12:19 PM  |
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