Go Back  Offshoreonly.com > Technical > General Q & A
Question on Crane Hi6M module >

Question on Crane Hi6M module


Question on Crane Hi6M module

Old 03-26-2002, 08:21 PM
Thread Starter
Join Date: Nov 2000
Location: Westport, Kentucky
Posts: 1,282
Likes: 0
Received 0 Likes on 0 Posts
Default Question on Crane Hi6M module

Just got a Crane Hi6M ignition system. While perusing the manual that came with it I flipped to the appendix that shows the timing curves that can be selected via the rotary switches. I am running a basically stock 502 with headers and single plane Dart with Holley 800 so I will select the advance curve for the HP 425/450/465/500.

The advance curve in the Crane documentation shows the base timing set at 14 degrees with a total advance of 34 full in at 3000 rpm. So far so good. The Crane unit advances a total of 20 degrees from my base.

The stock Merc ignition module (which is eliminated at install of the Crane unit) is the 24 module. Using this my base timing was set at 10 for a total of 34 full in at 3000 .

What concerns me is the base timing of 14 degrees. Won’t a 14 degree base timing make the idle fairly high? If memory serves me while setting the timing with the stock setup the idle increased a fair amount from 8 to 10 and jumped a bit when I tried 12. Anyone run one of these and notice the idle being high due to the base timing of 14?

Tim T.
BadDog is offline  
Old 03-26-2002, 09:40 PM
Posts: n/a

Setting your base timming 4 degrees higher will increase idle rpm.4 more will not hurt anything at idle.You can adjust base idle on carb no problem?I was looking at the crane ingitionsystem myself.It looks like a good set up.
Related Topics
Thread Starter
Last Post
General Q & A
06-23-2011 10:43 AM
General Q & A
10-21-2008 07:32 AM
General Boating Discussion
03-06-2007 07:05 PM
General Q & A
06-23-2005 06:51 PM
General Q & A
04-15-2002 02:39 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Quick Reply: Question on Crane Hi6M module

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.