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Offline Shamone

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Re: iridium spark plugs
« Reply #10 on: 05 February, 2014, 10:13:47 PM »
*Originally Posted by richardcbf [+]
According to the workshop manual for the CBF1000F (what we call the 'MKII'), the oem (honda factory fit) plugs are NGK IMR8C-9HES and as per http://ngk-sparkplugs.com/imr8c9hes-p-2745.html they are....
Band : NGK
Parts No. : IMR8C-9HES
Stock No. : 5990
NGK Iridium tipped types Spark Plugs IMR8C-9HES
Design Symbols used in NGK Spark Plugs
I - Plug Type: Iridium Platinum
M - Metal Shell Size: ? 10, 19 mm (3/4") Reach, 16 mm (5/8") Hex.
R - Resistor
Heat Rating Numbers : 8
C - Firing End Construction: Low Angle Ground Electrode
9 - Spark GAP: 0.9 mm (.036")
H - Spark GAP: Special Thread Type
E - Spark GAP: Special Resistance
S - Spark GAP: Special Gasket

NGK Iridium Plugs : IMR8C-9HES

2nd Edit (correction, sorry)....
The one you found does seem to have the same specification....
NGK 3797 CR8EHIX-9 Single Iridium Spark Plug
SKU: #CR8EHIX-9
ITEM : # NGK3797
BRAND :  NGK
Thread Size: 10mm
Hex Size: 5/8" (16mm)
Reach: 19mm (3/4")
Seat Type: Gasket
Gap: .036" (0.9mm)
Heat Range: 8
Terminal Type: Threaded Stud
Resistor: Yes
Thread Pitch: 1.0mm
http://www.ngk.com/product.aspx?zpid=9672

NGK Spark Plug CR8EHIX-9 Iridium Plugs [Box 4]
 £7.77 + FREE UK delivery
http://www.amazon.co.uk/NGK-Spark-CR8EHIX-9-Iridium-Plugs/dp/B00605Y2QC
 :061:

£7.77  :005:

Dam, I just paid a LOT more £27.99  :019:

http://www.ebay.co.uk/itm/4x-NGK-IRIDIUM-IX-CR8EHIX-9-SPARK-PLUGS-HONDA-CBF1000-Incl-ABS-1000-01-06-/171129696625?ssPageName=ADME:L:OC:GB:3160

Offline cantona

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Re: iridium spark plugs
« Reply #11 on: 05 February, 2014, 11:15:57 PM »
Shamone,what makes you order CR8EHIX-9 and not IMR8C-9HES which are suggested in service manual?

Offline Shamone

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Re: iridium spark plugs
« Reply #12 on: 06 February, 2014, 06:56:07 AM »
*Originally Posted by cantona [+]
Shamone,what makes you order CR8EHIX-9 and not IMR8C-9HES which are suggested in service manual?

I saw this post but Amazon had no stock, so searched the same number on E-bay. I didn't realise this might not be the correct type  :110:

*Originally Posted by Bill cbf1000 [+]

Offline richardcbf

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Re: iridium spark plugs
« Reply #13 on: 06 February, 2014, 07:49:23 AM »
*Originally Posted by cantona [+]
Shamone,what makes you order CR8EHIX-9 and not IMR8C-9HES which are suggested in service manual?
Don't forget that the original (factory installed) plugs on the CBF1000 ('MkI') are NOT 'Iridium', whereas they ARE 'Iridium' for the CBF1000F ('MKII').
That is one reason why there is a difference in the part numbers advised by Honda.
What it seems difficult to establish for certain is whether or not there is any technical difference between the CR8EHIX-9 and the IMR8C-9HES

EDIT: What I meant was whether or not there is any reason, for the CBF1000F, that only the IMR8C-9HES (oem fitment) should be used, bearing in mind what NGK say ""Some of these plugs have special resistors or multiple ground electrodes, depending on the OE requirements."
Otherwise the 'only' apparent differences are:
IMR8C-9HES (oem fitment NGK 5990) = Laser series, Dual precious metal.
(Iridium on the center tip and Platinum disc welded to backside of ground electrode provides long life)
Designed to last 80 to 100 thousand miles.
CR8EHIX-9 (NGK 3797) = Iridium IX series, Single precious metal.
Designed to last 40 to 50 thousand miles.
« Last Edit: 30 June, 2016, 06:40:32 PM by richardcbf »
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Offline macdoc

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Re: iridium spark plugs
« Reply #14 on: 04 December, 2017, 07:43:04 PM »
My head is spinning ....

Can someone confirm this iridium plug

NGK CR8EHIX-9

will work in a CBF1000a 2009 thanks

Ontario Canada rider staying in Cairns Australian for 3 months each year Jan to April
Australia> 04 KLR650 • 93 ST1100 sold • Canada > 09 Burgman Exec sold • 10 NT700v sold • 10 Wee ABS • 2009 CBF1000

Offline richardcbf

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Re: iridium spark plugs
« Reply #15 on: 05 December, 2017, 06:39:45 AM »
*Originally Posted by macdoc [+]
My head is spinning ....

Can someone confirm this iridium plug

NGK CR8EHIX-9

will work in a CBF1000a 2009 thanks
If, instead of searching (e.g., Google) for a match on "CBF1000a 2009"....
... you use SC58 (the Honda designation for what we call the 'Mk1' version of the CBF1000) + NGK 3797...
the answer should be revealed.
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Online Bifferman

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Re: iridium spark plugs
« Reply #16 on: 05 December, 2017, 08:21:20 AM »
*Originally Posted by macdoc [+]
My head is spinning ....

Can someone confirm this iridium plug

NGK CR8EHIX-9

will work in a CBF1000a 2009 thanks

YES, that's the one but then you had already looked it up on the NGK parts catalogue didn't you :015:.  Fits all years MKI Biffers.    The MKII uses a very similar but different plug IMR8C-9HES and is fitted standard by Honda.

Just be gentle removing the plug leads/caps especially the inner ones (the No.3 plug is hardest to remove and has a history of getting hairline splits in it if you are not very careful).  You will find out soon enough after fitting if your bike starts to miss-fire, gets hard to start etc  Search on here for this issue (put in vlassishlk  or andyinvienna in the user section/advanced search - Can't remember which but it is one of these two who wrote extensively about their problem with the NO.3 plug lead/cap - I think it was Vlassis :002:).

Didn't Richardcbf say that in post 13 above :164:.  Also,  What it seems difficult to establish for certain is whether or not there is any technical difference between the CR8EHIX-9 and the IMR8C-9HES.  The MKII plug difference lies in the length of insulation on the inner electrode (a bit longer on the MKII although the plug is exactly the same length).  There has been a debate on here as to whether one could use the Iridium plugs from the MKI in a MKII and the jury was non conclusive on that although probably yes if you were prepared to take a small risk - it's something to do with the heat range of the plug.  From memory I think the discussion arose because the MKI iridium plugs can be bought for approx the same price as the MKI OEM copper electrode plugs but the price for the MKII Iridium plugs was some silly price (x3 :156:).

Andy
 :149:
« Last Edit: 05 December, 2017, 09:06:18 AM by Bifferman »

Offline macdoc

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Re: iridium spark plugs
« Reply #17 on: 05 December, 2017, 09:02:20 AM »
YES, that's the one

Thank you for a simple yes which is the way the simple question should be addressed

The problem arises that motorcycle sites like Fort Nine
https://fortnine.ca/en/ngk-iridium-ix-spark-plug-cr8ehix-9

specifically state in their fitment that the plug does not work with the CBF1000a
Check out the vehicle specific version of this product.
results in
Does not fit
 2009 Honda CBF1000A
View products that fit…
« Last Edit: 05 December, 2017, 09:07:01 AM by macdoc »
Ontario Canada rider staying in Cairns Australian for 3 months each year Jan to April
Australia> 04 KLR650 • 93 ST1100 sold • Canada > 09 Burgman Exec sold • 10 NT700v sold • 10 Wee ABS • 2009 CBF1000

Online Bifferman

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Re: iridium spark plugs
« Reply #18 on: 05 December, 2017, 09:15:09 AM »
*Originally Posted by macdoc [+]
Thank you for a simple yes which is the way the simple question should be addressed

The problem arises that motorcycle sites like Fort Nine
https://fortnine.ca/en/ngk-iridium-ix-spark-plug-cr8ehix-9

specifically state in their fitment that the plug does not work with the CBF1000aresults in

Fortnine as well as other third party suppliers would say that because that is in line with what the NGK product manual.  When this debate was going on a few years ago now we actually reverted to NGK's teck peeps and that is where our info came from.