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1Back to top Go down    Spark plugs...what do you swear by? on Tue Apr 18, 2017 2:25 am

SniperX

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I am finally changing my spark plugs next week. The stock Bosch is incredibly hard to find locally so I'd love to get an NGK or something I can get locally. If the stock Bosch is the best to go with what number do you use?> I forgot what is in mine when I had it apart last year for the timing chain...I also remember getting a set of NGK (which I still have) for it and found out they no longer come with the tops and the tops are scarce as hens teeth so those are out. BTW the NGK I got is the D7EA but has no ferrule or whatever you call that screw on tip for the threaded end of the plug. Anyone know where to source a set of those tips or ferrules or what the hell they are called? I'd buy a case of 10 if needed. I use to throw them away!


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1972 BMW 3.0CSL, 1985 BMW Dinan 535i, 2001 Honda XR400R (plated), 1985 K100RT, 2004 ZX3 Focus, 1991 Dodge Power Wagon 4x4. 1977 Plymouth Trailduster 35K original miles!
    

Laitch

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@SniperX wrote: Anyone know where to source a set of those tips or ferrules or what the hell they are called?
Terminal nuts. Trade them for cigarettes, walnuts or whichever medium of exchange local mechanics are using.


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1995 K75T 68,000 miles
    

TacKler

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Sniper, 

If you have no luck locally for the ferrules, send me PM and I will post some out for you.  

I raided a good friends car workshop a couple of years ago and he said, "The orphan spark plugs box is over there.  Take all you need."  So I did..... I took them all.  We are still friends.  

If you have a look at the euromotoelectrics website in the US they have Bosch plugs there.  The Bosch plugs are getting harder to find in Oz whereas the NGK are readily available.  Bosch X5DC or NGK D7EA for me.  

Dave.



Last edited by TacKler on Tue Apr 18, 2017 7:35 pm; edited 1 time in total (Reason for editing : EME reference)


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Red 1991 K75S
    

Snod Blatter

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Just as a little FYI if you look up the K100 on NGK's website they recommend the D8EA plug instead. If your engine still has the original Bosch plugs please do compare the length of them to whatever you're replacing them with - I have fitted D7EAs but the old Boschs looked a little longer to me.

Also, in other bikes I have tried copper NGK, copper Denso, Iridium Denso and Champion (for a laugh). Nothing lasts half as long or is as well behaved as the normal boring copper NGK plug.

Oh and I've been calling them nipples.. Laughing


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1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

RicK G

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Bosch X5DC in the cardboard packet, they are made in europe, not the blister pack as they are made in Brazil and wont last well or NGK D7EA


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

92KK 84WW Olaf

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Quite a few places here also go for the D8EA in the Ks, including some BMW experts. Not sure of the physical differences but from 2 stroke days I have a feeling that the difference between a D7EA and a D8EA will be the running temperature, the 7 being hotter than the 8. I have used both and also the Bosch and also Champion and can't say there is a very obvious difference. Apart from the fact that with the NGKs a few times I have had plugs fail after a few hundred miles.

Thanks to BAE there is a box of D7EAs in my shed......


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1992 K100LT 0193214 Alaska Blue 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Mystic Red 58,645 now 69,000 miles
    

Dai

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D7EAs. Dunno what Olaf is up to but I've not had an NGK fail yet in any bike and I've run some for six or seven years at an average of 15K miles a year before remembering to change them. I have noticed that the K is sensitive to the gap; BMW state a gap of 23thou but as the nearest feeler gauge I have is 25thou... Once it wanders passed about 4thou too wide (IME) the engine starts to protest on warmup.


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

BobT

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BMWs were built metric and therefore the plug gap should be 0.6mm (+0.1/-0.0) with a maximum wear limit of 0.9mm. Measure in thou if you want but you speedo will not measure furlongs so make life easy and buy a set of feeler gauges that are metric (£5 or less).

    

9Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 10:17 am

Point-Seven-five

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@BobT wrote:BMWs were built metric and therefore the plug gap should be 0.6mm (+0.1/-0.0) with a maximum wear limit of 0.9mm. Measure in thou if you want but you speedo will not measure furlongs so make life easy and buy a set of feeler gauges that are metric (£5 or less).
Uh-oh, beside gapping my spark plugs in thousandths I have been buying oil for my BMW's in non-metric gallon jugs.  Am I unwittingly damaging my engines???


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

10Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 10:28 am

RicK G

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Nuthin wurse than buyin oil by the gallun it'll wreck the injun.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

11Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 11:36 am

92KK 84WW Olaf

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Not up to now but them imperial long chain molecule holder jugs are no longer compatible with them metric long chain molecules.


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1992 K100LT 0193214 Alaska Blue 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Mystic Red 58,645 now 69,000 miles
    

12Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 12:29 pm

Point-Seven-five

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@RicK G wrote:Nuthin wurse than buyin oil by the gallun it'll wreck the injun.

Oh no!!!!!   My bricks are doomed!!!  affraid


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Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

13Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 12:58 pm

92KK 84WW Olaf

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Just don't buy it from a cowboy and you injun will be ok.


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1992 K100LT 0193214 Alaska Blue 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Mystic Red 58,645 now 69,000 miles
    

14Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 8:28 pm

Crazy Frog

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Last set of bosh X5DC that I bout on the Internet are made in ..... India.
I will try them after I replace the injectors.


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1986 k75, 1985 K100rt, 1985 K100rt/EML sidecar.
    

15Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 10:01 pm

AL-58

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@Point-Seven-five wrote:
@BobT wrote:BMWs were built metric and therefore the plug gap should be 0.6mm (+0.1/-0.0) with a maximum wear limit of 0.9mm. Measure in thou if you want but you speedo will not measure furlongs so make life easy and buy a set of feeler gauges that are metric (£5 or less).
Uh-oh, beside gapping my spark plugs in thousandths I have been buying oil for my BMW's in non-metric gallon jugs.  Am I unwittingly damaging my engines???
And I'll bet they are those undersized US gallons not the full sized Imperial gallon.

Al


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'87 K100RS/HRD sidecar (1100 motor)  sc25 
'92 K100RS-16v (Paint it Black)

'87 K100RT with Paralever backend

"When I'm too old and too foolish to handle a sidecar I'll buy a Sportsbike"

    

16Back to top Go down    Re: Spark plugs...what do you swear by? on Wed Apr 19, 2017 11:11 pm

RicK G

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Yeah if you use those undersize galluns of gas then you'll be runnin lean.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

17Back to top Go down    Re: Spark plugs...what do you swear by? on Sat Apr 22, 2017 8:28 pm

K75cster

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Oh Dear, Imperial Gallons bigger than American ones Imperial long chain molecules longer then Metric ones, a shift from metric gaps to imperial gaps to create a greater search area for that explodable stuff in the combustion chamber, we are so lucky we have a under square engine as I cant imagine how hard it would be to ignite anything in there if it was over square. I truly hope none of you have round gas cans for these square engines and all these chains of molecules on a shaftie at that. Where will it all end. Whose Bosch will we trust. Where do we buy spare sparks for our X5DC's or AC's for that matter, we need a rectifier for the cause. Blister packs like all blisters aren't welcome, but put them in a cardboard carton and I'll buy them by the boxful. Before I am kicked up the D7EA I'll finish this post. Laughing


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

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