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Spark plug gap |
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Quite a regular  
Joined:
2008/5/17 22:24
From Hartswater South Afrika
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I was wondering if anyone can tell me , in my A15 with a compretion ratio of 12.5:1 what would the guys that know make spark plug gaps
Posted on: 2009/3/31 11:12
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Re: Spark plug gap |
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Home away from home  
Joined:
2007/9/8 14:27
From South Africa
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I am running BP7's at .75 to .8mm with a MSD blaster SS coil, no problem
What pistons did you use in your A15?
Using a big VDL cam I presume?
Posted on: 2009/3/31 12:40
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_________________
'75 1200 B110 - 154hp Race prep A14
'97 Silvia - 600hp SR20 time attack
'07 Hilux - Tow car
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Re: Spark plug gap |
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Moderator  
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2001/5/3 7:04
From 48 North
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Contentmaster
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The gap entirely depends on your ignition system. Doesn't matter if it is 12.5:1 or stock 9:1 compression.
If you have stock points ignition, set the gap to the high side of the stock setting (0.035 inch).
If you have Nissan electronic ignition, set it to that specification (probably 0.035 inch, but possibly 0.042 inch for newer kinds)
If you have MSD multi-spark CDI ignition, use the MSD recommendation.
In general, larger gaps are better but only if the ignition system can handle it.
Posted on: 2009/4/1 4:24
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Re: Spark plug gap |
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Quite a regular Joined:
2008/5/17 22:24
From Hartswater South Afrika
Group:
Registered Users
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I got a set of 30thou oversize a15 pistons from Master Parts in Cape Town.I use a 290 degree cam in at the moment.What setup are you running?
Posted on: 2009/4/3 18:13
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