Thread: J gap
05-31-2007, 08:52 AM #1
anyone J gap their plugs? seems the GPR's can do it once they change there coils. Can the "old school" ignitions fire them on the stock coils?
05-31-2007, 09:25 AM #2
yes.. most claim some gains, 50 rpm's I think is about the most I've read..
Last edited by w/rpm500; 05-31-2007 at 09:52 AM.
05-31-2007, 10:14 AM #3
Do you need to change your coils on the gpr's?
05-31-2007, 10:23 AM #4
Side gapping / J-gapping will work fine on all of them. No need to change out coils
Mine idles smoother after I did this, that was the first thing I noticed on my TACH
05-31-2007, 12:15 PM #5
What kind of gap would you guys suggest for our older ski's? Is indexing still a good idea with J gaps?
05-31-2007, 12:18 PM #6
05-31-2007, 12:20 PM #7
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- Apr 2007
reply to last posting
This is a new idea for me to try. I'm in the mix of doing a lot of things to my craft right now. How would you go about indexing the spark plugs? That has to do with the gap of the sparking electrode right. Like the last person said, what kind of a gap are we talking about for the GPR's??
05-31-2007, 12:23 PM #8
GPR plug gap should be around .090 for maximum performance.
05-31-2007, 12:25 PM #9
05-31-2007, 12:25 PM #10
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