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NGK DCPR8E vs Nippon Denso Iridium IXU24 Spark Plugs

Joined Nov 2001
17K Posts | 774+
Ely, England
NGK versus nippondenso?

i have been running an IXU24 for nearly three seasons. that's three seasons of RACING. i love the plug - it's the biz!

mmm, you say, how many has he used? that's ONE plug in that time! i then ride at swaffham in february when cookeye should turn up.

the bike stalls in the woods and i push just 100 yards to get it out. cookeye gives me a new plug, one of a box of DCPR8E's. the bike starts straight away and of i go again.

i then enter two meetings and the bike stalls at both after a lap but restarts after 20 kicks. it does the same at a third meeting even though i have now changed the SEM unit. i'd made my original SEM last nearly 5 years.

anyway, i can't keep it running with the DCPR8 in. i get sent another one by GGR to go with a new (non-OEM) cap.

the bike is a pig to start and does occasionally stall even with this new plug and ignition.

i'm so annoyed that i'm having this trouble - i buy an IXU24 again even though i want to bleed every serviceable minute out of everything!

IXU24 - no problems at all and starts first time.

for all those struggling. do you have a blue or orange (bad) spark when you KICK?

we are meant to be changing the caps ONCE PER SEASON...

DCPR8E's are old technology. they have an old fashioned broad nose. that means that they can't tolerate as much as an iridium wire nosed plug can.

if you run an '8' and then you thrash it and it gets overheated it actually can't recover. it's like your tongue after eating soup that's too hot. it's had it after that.

overheating can be lean running in just one area of the jetting. it can also be that you overheated it continually in deep mud or when stuck in a rut.

an 8 is a low number plug. it means it is better suited to choke, riding steadily, cooler engine temps, running rich.

if you had a '9' it would be better for thrashing but might dislike starting continually in the garage and always need a run to 'clean it'.

but a quality plug like the IXU24 will expand both areas due to better technology.

but one.

regards

Taffy
 
Would it not be fairer to compare the Nippondenso IXU24 to NGK DCPR8EIX rather than to the old NGK DCPR8E?
 
taff r u struggling to create threads?
very interesting as it is ! how long was this one in the tool box :lol: :lol:
 
some of my little lambs have gone astray and need leading outta the wilderness!!!! :lol: :lol:

smorgy
it's fair to compare a standard plug to any of the iridium/palladium type plugs. i actually put the nippondenso v NGK in afterwards and perhaps wasn't appropriate.

now have i made my bloody point or not! :evil: :evil:

regards

Taffy
 
ok ok il change mine at week end 8O

r u happy now


ive been meaning to for a while but now ive had indepth back to back trials. how can i not. it would be rude not to :lol: :lol:
 
Taf, you made your point. 8O You got a better spark plug and you are very happy with it. And it is not really about bashing a brand.

In fact, I had similar problems with the DCPR8E too and cured it by installing another plug. DCPR7E, and it has been in there since july 2004 exept while adjusting valve lash, at which time it was inspected since it was taken out anyway.

Now that you have reported good results with the more modern type of plug, I´m tempted to follow your example.
 
smorgy

tell us a bit about going to the 7. as i have indicated above, this plug will REALLY help with starting, choke, low speed, mudplugging and what the english call 'tootling along'.

unoless you've thrashed her, i bet it doesn't stall?

regards

Taffy
 
I have run this plug IXU24 in my 02 FE400 for over 2 years. I buy a new one every year and put it in. Seems to have worked fine.
 
Hi Taff,

I tried the Nippondenso in the newer bike for a while without problems. Seems like the SEM ignitions benefit the most from this plug no?

I was wondering your opinion about the DCPREIX (irridium tipped fine wire plug), basically the NGK version of the Nippondenso.

One thing I do like about the NGK is that you can get it with a non removable steel top. Seems like the aluminum removable tips can get worn causing a bad connection there.

Dale
 
i haven't tried it but i do prefer the zip fit without the plug's little alloy screw on cap. that is how the OEM cap was. so i went IXU24.

keep to the OEM cap and the 'zip' fit if you can.

in the meantime (back at the ranch!) i was sent a non-original cap and had to change as i've said above.

regards

Taffy
 
Anybody got a cross reference number for the IXU24 plug? My local motorcycle shops (Jap bikes & KTM) seem to be lacking the ability to find it "theres no such number in the book" Should I just email Motoxotica?

Thanks
Ron
 
right! i just checked the WWW and found the company that sold me ONE plug. trouble is that they're in the UK!

camskill there are little bits you can read as well.

do a search lads and if they want to sell four - get some between you. i've run them for four years and wont run anything else. now's the time to believe!

regards

Taffy
 
trying out an ixu24. also got the ngk version to try. dcr8eix (or something like that?)
 
kzoo,
Thanks for the heads up and link, I'm not sure I could have found those guys otherwise. Plug is on the way I'll post results after it's in (see if Taffy knows what the phuq he's talking about!) :D :D :D

Ron
 
Ok, Taffy, how do I check the spark?

I´m running this standard DCPR8E, and even though I think it looks fine, chocolatebrown, It works poorly long before it´s supposed to be out!! With exactly the same problem you wrote about, tricky to start both warm and cold...
BUT!!! The good thing is that you end up with strong kickinglegs and it´s a good exercise for patience...

And please tell me, anyone, how do I check the spark, I haven´t got a clue...

/Rikard
 
boheme said:
Ok, Taffy, how do I check the spark?

I´m running this standard DCPR8E, and even though I think it looks fine, chocolatebrown, It works poorly long before it´s supposed to be out!! With exactly the same problem you wrote about, tricky to start both warm and cold...
BUT!!! The good thing is that you end up with strong kickinglegs and it´s a good exercise for patience...

And please tell me, anyone, how do I check the spark, I haven´t got a clue...

/Rikard

Remove the spark plug from the engine.

Connect the spark plug lead to the spark plug.

Hold the threaded part of the spark plug on the engine and kick the starter or run the e-start to turn the engine over while grounding the spark plug threads on the engine and looking for a spark between the plug electrodes,

The spark should be blue in color, if it is yellow it is weak.

This should be performed without the sun shinning on the plug.

Let us know what you find out.

Regards,

Joe
 

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