Like Tree0Likes

Is a Stock 350 magnums ignition any good?

Reply
Old 10-24-2009, 03:29 PM
  #1
Registered
Thread Starter
 
Join Date: Sep 2009
Location: Chatham.Ontario
My Boats: Velocity 230
Posts: 268
Default Is a Stock 350 magnums ignition any good?

I was wondering if a stock 350 magnums ignition is any good for an upgraded engine? the engine is a 87
twistedvelocity is offline  
Reply With Quote
Old 10-25-2009, 02:25 AM
  #2
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha
My Boats: .......32............. ...............Active Thunder....
Posts: 15,748
Default

It probably has a points type ignition and should be upgraded if you do performance upgrades. Not really sure what ignition it has though, so you need to find out first.
Griff is offline  
Reply With Quote
Old 10-25-2009, 08:11 PM
  #3
Registered
Thread Starter
 
Join Date: Sep 2009
Location: Chatham.Ontario
My Boats: Velocity 230
Posts: 268
Default

What woudl I need to look at to know exactly what one it is?
I think I got the thunderbolt breakerless ignition. im not sure if they all have what looks like an ignition box on the top but mine does
twistedvelocity is offline  
Reply With Quote
Old 10-25-2009, 08:27 PM
  #4
Registered
 
Join Date: May 2009
Location: Syracuse NY
My Boats: 1988 sonic 30ss
Posts: 218
Default

the magnum came with a thunderbolt IV hei ignition in 87 according to the merc repair manual yours should have that
andyt25 is offline  
Reply With Quote
Old 10-25-2009, 08:31 PM
  #5
Registered
Thread Starter
 
Join Date: Sep 2009
Location: Chatham.Ontario
My Boats: Velocity 230
Posts: 268
Default

im looking at the manual too I got the clymer one. I know its not an HEI coil and my book does show an HEI on any of the igniitons.
If it is the thunderbolt would it be fine for an engine upgrade?
twistedvelocity is offline  
Reply With Quote
Old 10-25-2009, 08:36 PM
  #6
Registered
 
Join Date: May 2009
Location: Syracuse NY
My Boats: 1988 sonic 30ss
Posts: 218
Default

I'm looking at the actual merc manual the distibutor cap should have 4 screws holding it down the only other factory option was a mallory points style that came on some big blocks and the mie 5.7 ski engine not the magnum
andyt25 is offline  
Reply With Quote
Old 10-25-2009, 08:39 PM
  #7
Registered
Trade Score: (30)
 
Join Date: Dec 2004
Location: hampstead nh
My Boats: 03 top gun 525 efi
Posts: 3,194
Default ignition

that boat has thunderbolt 4 ignition its perfectly fine its been there for almost 23 years only thing that ever goes bad is the sensor in the dist. i always keep a spare in my boat
smokin' gun is offline  
Reply With Quote
Old 10-25-2009, 09:18 PM
  #8
Registered
Thread Starter
 
Join Date: Sep 2009
Location: Chatham.Ontario
My Boats: Velocity 230
Posts: 268
Default

Should I up grade the ignition if I do an engine?
twistedvelocity is offline  
Reply With Quote
Old 10-25-2009, 09:25 PM
  #9
Registered
 
Join Date: May 2009
Location: Syracuse NY
My Boats: 1988 sonic 30ss
Posts: 218
Default

I wouldn't I had a friend try a msd 6 and a different dist on his boat and when he modified his engines and could never get it to work right so went back to the thunderbolt and it's been perfect since
andyt25 is offline  
Reply With Quote
Old 10-26-2009, 01:59 AM
  #10
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha
My Boats: .......32............. ...............Active Thunder....
Posts: 15,748
Default

If its got a TB IV then it does not need upgraded and will work with performance upgrades just fine. You may just want to switch the ignition module to change the advance curve.
Griff is offline  
Reply With Quote
Reply



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



All times are GMT -5. The time now is 10:47 AM.


Copyright 2011 OffShoreOnly. All rights reserved.