Spark Plugs

[Mike Rocket]

Which spark plugs are now the correct ones to fit? World of Triumph list NGK DPR7EA-9 and the handbook says NGK DPR8EA-9. Does it matter and does anybody know the difference?
Thanks for any opinions and advice.

 

[Gerald]

Which spark plugs are now the correct ones to fit? World of Triumph list NGK DPR7EA-9 and the handbook says NGK DPR8EA-9. Does it matter and does anybody know the difference?
Thanks for any opinions and advice.

The DPR7EA-9 is one range hotter, have seen listings that spec. both heat ranges.

 

[Mike Rocket]

The DPR7EA-9 is one range hotter, have seen listings that spec. both heat ranges.

Is the DPR7EA-9 the one they changed to later for some reason, do you know?

 

[Gerald]

Is the DPR7EA-9 the one they changed to later for some reason, do you know?

I believe they started with the 7, and changed later to the 8. Believe if you're regular every day riding normal use, the 7's would be fine. If pushing harder and upper rpm's the 8 would probably be better. Don't believe either range would hurt unless running lean. Run a set of either and pull them out after one or two hundred miles and check them. Usually takes a little while for plugs to color

 

[sonny]

Just run the DBR7EA-9 and it will be all good.

 

[Kevin frazier]

Or E3 if youre pulling like nhra

 

[Gerald]

Or E3 if youre pulling like nhra

Looks like the first was irodium, never tried the second type.

 

[Kevin frazier]

Looks like the first was irodium, never tried the second type.

Platinum out of my ford, 115000 miles, just switched to E3 in it. It likes the E3. theyre going in the lush racing engine also.

 

[Gerald]

Platinum out of my ford, 115000 miles, just switched to E3 in it. It likes the E3. theyre going in the lush racing engine also.

Got good service from that set.

 

[Mike Rocket]

I believe they started with the 7, and changed later to the 8. Believe if you're regular every day riding normal use, the 7's would be fine. If pushing harder and upper rpm's the 8 would probably be better. Don't believe either range would hurt unless running lean. Run a set of either and pull them out after one or two hundred miles and check them. Usually takes a little while for plugs to color

Thank you