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Message started by Reelthing on 01/20/10 at 12:43:20

Title: long term ir plug
Post by Reelthing on 01/20/10 at 12:43:20

http://reelthing.savageriders.com/pics/savage/plug.jpg

Put a NGK Iridium dpr8eix-9 in the '95 a couple years ago and after 7 or 8k miles it's got to go. At this point the '95 Savage is an intermittent use bike as I no longer use it for a 50-100 mile daily commute. This intermittent use seems to have taken it’s toll on this hi-tech plug. You can see where a ring formed just below the electrode or that part of the insulator melted. This causes the plug to foul out very easily – the last standard NGK dpr8ea-9 went too many miles to count – from this one example I’d have to conclude they’re simply not worth the money – and given the nature of my use of this bike very likely not as good as the cheapest heavy electrode plugs.      

Title: Re: long term ir plug
Post by justin_o_guy2 on 01/20/10 at 13:01:44

I dont understand how a spark plug would be affected by only running the thing occasionally vs. regularly. I mean, how do it KNOW?

Title: Re: long term ir plug
Post by Serowbot on 01/20/10 at 14:11:16

Thanks for the review RT... good info...

Title: Re: long term ir plug
Post by verslagen1 on 01/20/10 at 17:11:48

gonna have to look at mine soon.

Title: Re: long term ir plug
Post by MMRanch on 01/20/10 at 17:27:02

I understand  the   IR   plug needs less wattage from the system and so the bike's system should last longer and run cooler.   That's the reason to run the IR type.

Title: Re: long term ir plug
Post by Reelthing on 01/21/10 at 07:45:40


243B3D3A2720112111293B377C4E0 wrote:
I dont understand how a spark plug would be affected by only running the thing occasionally vs. regularly. I mean, how do it KNOW?


Of late I've only used the '95 for short runs to store say, couple miles at most so it really never gets a chance to fully warm up - many cold starts vs. the long daily runs. What i need to do is migrate it to the fishing shack - the tw200 lives in the new shed but it's easy to ride up the ramp not so sure about the savage it might be low enough to rub on the top of ramp - that could sure ruin your day if it hit bottom - a 4 foot fall off the ramp and out the door wouldn't be any fun.

back to the plug I just don't believe these hitech ir plugs function very well used like this - likely they're better suited to high rpms where their lower arc voltage could be helpful - wouldn't take the ing as long to recover and longer runs to keep the cold start soot burned off.

any way poped one of champions in it that I used for plug reading - man does it ever start and run better.

Title: Re: long term ir plug
Post by Rocco on 01/21/10 at 08:13:00

the shop i bought mine from put in an ngk r, i think that's the same thing! well they didn't put the little cap at the end of the plug that goes into the wire, it was just threads!

i put in a champion as well, it was like 3 dollars for 2....the guy looked @ me funny when i said i only needed 1 half of one set  ;D

Title: Re: long term ir plug
Post by justin_o_guy2 on 01/23/10 at 08:14:50


4C7B7B726A767770791E0 wrote:
[quote author=243B3D3A2720112111293B377C4E0 link=1264020200/0#1 date=1264021304]I dont understand how a spark plug would be affected by only running the thing occasionally vs. regularly. I mean, how do it KNOW?


Of late I've only used the '95 for short runs to store say, couple miles at most so it really never gets a chance to fully warm up - many cold starts vs. the long daily runs. What i need to do is migrate it to the fishing shack - the tw200 lives in the new shed but it's easy to ride up the ramp not so sure about the savage it might be low enough to rub on the top of ramp - that could sure ruin your day if it hit bottom - a 4 foot fall off the ramp and out the door wouldn't be any fun.

back to the plug I just don't believe these hitech ir plugs function very well used like this - likely they're better suited to high rpms where their lower arc voltage could be helpful - wouldn't take the ing as long to recover and longer runs to keep the cold start soot burned off.

any way poped one of champions in it that I used for plug reading - man does it ever start and run better.
[/quote]



Ahhh, length of run, not time between runs. I can see that a lot easier.

A 4' drop isnt much of a big deal, if a guy gets to walk to the edge & hop off, but getting "spit" off sideways with a motorsickel atween the legs? Ehhhh, thats a Long 4 feet.

Title: Re: long term ir plug
Post by jabman on 01/23/10 at 09:08:42

do you need the hotter plug type?

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