DPR7EA-9 vs DPR7E1X-9 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 11 (permalink) Old 07-18-2011, 02:41 PM Thread Starter
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DPR7EA-9 vs DPR7E1X-9

I replaced DPR7EA-9 with DPR7E1X-9 and gained quicker starts. Does anyone know the difference between the two types ?

tia:
D: motorcycl:

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
Additional Flashing LED Brake Light on Trunk
Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #2 of 11 (permalink) Old 07-18-2011, 03:48 PM
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The DPR7EIX-9 are Iridium plugs. They do make quite a difference.
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post #3 of 11 (permalink) Old 02-21-2013, 11:00 PM
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should I be worried that Amazon tells me that the plugs y'all keep talking about aren't supposed to fit in my '94 VN750? Even the NGK website keeps trying to tell me to get DP7EA-9's instead of any of the IX's.

Are there other mods that need to happen so that works?
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post #4 of 11 (permalink) Old 02-22-2013, 12:00 AM
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Quote:
Originally Posted by jinxremoving View Post
should I be worried that Amazon tells me that the plugs y'all keep talking about aren't supposed to fit in my '94 VN750? Even the NGK website keeps trying to tell me to get DP7EA-9's instead of any of the IX's.

Are there other mods that need to happen so that works?
The Iridiums are fine for your bike. I have used them for 2 years. No mods needed. From NGK http://www.ngksparkplugs.com/part_fi...d=6155&type=ir
EDIT- link didn't work. If you go to NGK site, click on products, motorcycle, Kawasaki. Then click on engine size, Vulcan 750 will come up, click on check mark for Iridium plugs. It shows the DPR7E1X-9 for the Vulcan 750

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" Loud Pipes Risk Rights "

2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier

Last edited by JM2001; 02-22-2013 at 12:20 AM.
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post #5 of 11 (permalink) Old 02-22-2013, 12:02 AM
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No, these do fit. I have them in my bike. No mods at all.

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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post #6 of 11 (permalink) Old 02-25-2013, 10:34 AM
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That is odd-- I copy/pasted the plugs from here, ordered a few online, and they are actually much thicker on the non-gapped end than the plugs that came with the bike (actually NGK's also!) and the wires don't seem to want to fit over them. I didn't think that is something I should force, unless it's ok to muscle them on...?
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post #7 of 11 (permalink) Old 02-25-2013, 10:45 AM Thread Starter
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Quote:
Originally Posted by jinxremoving View Post
That is odd-- I copy/pasted the plugs from here, ordered a few online, and they are actually much thicker on the non-gapped end than the plugs that came with the bike (actually NGK's also!) and the wires don't seem to want to fit over them. I didn't think that is something I should force, unless it's ok to muscle them on...?
...have you removed the little cap ends prior to cable installation ?

...remove the caps from the SP cable end to expose the threaded portion (so it appears as your old NGK;s).


Last edited by WilliamTech; 02-25-2013 at 10:47 AM.
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post #8 of 11 (permalink) Old 02-25-2013, 10:48 AM
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Quote:
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...have you removed the little cap ends prior to cable installation ?

...remove the caps from the SP cable end to expose the threaded portion (so it appears as your old NGK;s).

Precisely so. You remove them by unscrewing them, if I recall correctly.

1985 VN700 unknown mileage (over 33K)

AGM Battery
Iridium spark plugs
NGK wires and caps
Relocated R/R
Marbled
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post #9 of 11 (permalink) Old 02-25-2013, 09:27 PM
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post #10 of 11 (permalink) Old 02-25-2013, 09:37 PM
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Tihs explains so much... it's funny, the big conceptual stuff I have no problem understanding. The practical details of how stuff works... yeah, not so great at that. Thank you!
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