New MOT guy had a 2 year old Harley Davidson in for a service..... Model...erm big and black.
It had NGK plugs type "MR8L 9". He cannot find these plugs. They don't show up on the NGK website and web search not really helping either. Any ideas please carpedians?
Harley.davidson Spark Plug Question
Started by
dapleb
, May 16 2023 04:56 am
14 replies to this topic
#1
dapleb
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Posted 16 May 2023 - 04:56 am
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#2
Catteeclan
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full o shoite
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Posted 16 May 2023 - 05:52 am
I've got catalog here but it's a few years old now, nothing in there.
I'd guess this plug is made for HD by NGK and not available by them yet. Bet he can get them via HD at a cost.
Bike details could reveal more.
Edit,
Just had a look in the newest online catalog, no MR8L9 in there at all.
Indian has a listing for a MR7F, the only MR I can see.
Edited by Catteeclan, 16 May 2023 - 06:02 am.
2002 TDM900 Yellow
#3
dapleb
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Posted 16 May 2023 - 06:31 am
Thanks for looking Catte. Think you be right. Too new to be listed and only for that specific model.
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#4
ChrisG
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Posted 16 May 2023 - 01:31 pm
NKG have a code decoder, but that format doesn't quite fit https://www.ngk.com/...mbering-systems
I think it means
M - Compact
R - Resistor type
8 - Heat range hot to cold, so fairly cold
L - 11.2mm thread length
9 -0.036" gap
Some sites seem to list a LMAR8L-9, but that format doesn't quite fit either.
1992 Mk1, 76k miles, Hagon springs, MTC exhaust, 4½ gears Gone now 
2009 900 abs, 42k miles, Yamaha heated grips, double bubble screen, R&G crash bungs, scottoiler, Autocom, 1500 lumen LED spotlights.
#5
dapleb
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Posted 17 May 2023 - 07:56 am
I have emailed a non dealer Harley dude to see of they can help. My advice, scrap it. (@_@)
Ta for decoder Cwis
Ta for decoder Cwis
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#6
Gdogg
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Posted 17 May 2023 - 08:59 am
Thought Hayleys had glow plus as they're agricultural diesels 😂😂
Edited by Gdogg, 17 May 2023 - 09:00 am.
<p> Now Sold 😔......850 MK2A 4TX6 in Silver, Stainless steel hand rolled slip on end can, stainless 2into1 headers, K&N air filter, Hagon progressive front springs, Gdogg modified rear shock, Else Made "Ridgeback" Gel Seat, Gdogg under seat fender extender, Powrspark leads, Carbon fiber effect vinyl wrap fairing decals & logos, Michelin Pilot Road2's, V-Strom hand guards, Givi monorack & box (colour matched side rails).
#7
Studley Ramrod
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Posted 17 May 2023 - 04:39 pm
Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !! Now owned by chrisbee ! Studley's mk2a Bloggerydoodaah ! Photos of my first MK1 Photos of my MK2a TPLQHCSRSFC No. 1 Fan
#8
Favs
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Posted 17 May 2023 - 06:41 pm
I knew all those years at Bletchley Park would pay off
Single-handedly reviving the Wave.
2008 reg. Black TDM 900 ABS
#9
Gdogg
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Posted 18 May 2023 - 09:24 am
Studley Turing Ramrod from now on 👍😂
Edited by Gdogg, 18 May 2023 - 09:26 am.
<p> Now Sold 😔......850 MK2A 4TX6 in Silver, Stainless steel hand rolled slip on end can, stainless 2into1 headers, K&N air filter, Hagon progressive front springs, Gdogg modified rear shock, Else Made "Ridgeback" Gel Seat, Gdogg under seat fender extender, Powrspark leads, Carbon fiber effect vinyl wrap fairing decals & logos, Michelin Pilot Road2's, V-Strom hand guards, Givi monorack & box (colour matched side rails).
#10
dapleb
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Posted 24 May 2023 - 07:59 am
I got a reply after a week from a Harley specialist... they said...we don't got em!
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#11
Catteeclan
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full o shoite
- Location:Gorleston Norfolk
- TDM model: 2002
Posted 24 May 2023 - 04:48 pm
I got a reply after a week from a Harley specialist... they said...we don't got em!
Bunch of nobs.
2002 TDM900 Yellow
#12
dablik
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Posted 24 May 2023 - 04:50 pm
Fook me a very special, specialist then.
Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.
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Sorted and on the Road Mick 
it's the bike that Jack built 
#13
leehenty
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Posted 26 May 2023 - 08:05 pm
Its a sparky plug how complex can it be ?
2002 900 silver,oil pressure switch with brass 90 degree conversion, RG fork protectors. Wilburs custom made rear Shock with remote hydraulic preload and RG shocktube, Wilburs front springs. Scotoiler with a custom made swing arm delivery unit. Silicone radiator hoses.BMW 1150 handguards with Touratech extensions, Carbon Fibre yoke cover and fender extenda, MRA flip screen, Yamaha Engine bars, SW Motech Centre Stand, Kappa wingrack three box Luggage with E21's as option from the K960 boxes, Zumo 660 satnav on Touratech mount, Led Voltage monitor, Baglux tank cover, Clear LED Rear light, Aux LED brake light, Stainless rear axle nut, stainless chain adjusters, stainless wheel spacers front and rear, Probolt Polished Stainless Flanged Hex engine screws, Polished stainless fairing screws, stainless disc bolts. Titanium brake pins front, Probolt Titanium Flanged Hex Front Caliper Bolts & Rear caliper slide pins.<p>Top Sellerie double gel pad seat. Carbon Fibre inner dash and side infill panels. Anodised black alloy swingarm pivot bolt covers and footpegs, Nano II Gear indicator.
#14
dapleb
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Posted 27 May 2023 - 07:30 am
And why would you need to specially comission a non standard size!!! Poor bloke had a variety of very similar but not identical plugs.... don't think I'd be too keen on fitting a near enough plug on a 2 year old boike.... voiding any warranty etc.
I guess he will have to go direct to Harley dealership to try and get um.
I guess he will have to go direct to Harley dealership to try and get um.
"Whats up", "Piston Broke", "Yeah me too...hic"
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
Active member of TPLQHCSRSFC and TSRMCMAS (even though a year off) and avid fan of PM not sent.
#15
Studley Ramrod
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Posted 31 May 2023 - 04:58 pm
I knew all those years at Bletchley Park would pay off
Studley Turing Ramrod from now on
Just Googled it 
I agree, its just a fooking spark plug ffs ! 
Mk2a 2000 in Silver. Top end Refurb @ 41100 miles, Scottoiler, Renthal Road High Bars, Up & Back Bar Risers, Bellypan, DL650 Handguards, Capt. Picard Bar Ends, House of Henty SS Wheel spacers, New Seat Cover Fitted. 58 MPG !! Now owned by chrisbee ! Studley's mk2a Bloggerydoodaah ! Photos of my first MK1 Photos of my MK2a TPLQHCSRSFC No. 1 Fan
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