Author Topic: Loop Plugs  (Read 561 times)

Online Kiwi_Roy

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Loop Plugs
« on: April 15, 2021, 10:01:23 PM »
Greg Bender recommends NGK BP6ES plugs, he doesn't favour the BP7ES NGK suggest.
I went to Crappy Tire and couldn't find either of the so I picked up a pair of BP5ES that they did have.
Apparently this is a hotter plug than the BP6ES
Would it do any harm to run these otherwise I can shop around and take the 5s back.
Thanks in advance for your input.
Roy
72 Eldorado
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17 V7iii Special

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Offline Tom H

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Re: Loop Plugs
« Reply #1 on: April 16, 2021, 12:28:14 AM »
I would go with the 6 unless you have a reason to go with 5. Too hot could cause problems.

Check fleabay, sometimes you can find a good deal on the 6.

Tom
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Online moto-uno

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Re: Loop Plugs
« Reply #2 on: April 16, 2021, 12:35:42 AM »
You might even find them in a m/c shop . Too hot could lead to preignition  when hot  and under
heavy throttle. Peter

Online guzziart

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Re: Loop Plugs
« Reply #3 on: April 16, 2021, 07:11:19 AM »
Greg Bender recommends NGK BP6ES plugs, he doesn't favour the BP7ES NGK suggest.
I went to Crappy Tire and couldn't find either of the so I picked up a pair of BP5ES that they did have.
Apparently this is a hotter plug than the BP6ES
Would it do any harm to run these otherwise I can shop around and take the 5s back.
Thanks in advance for your input.
Roy

FWIW, I have never had a problem getting NGK's at the local auto parts stores (Autozone, Advance & NAPA).

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Re: Loop Plugs
« Reply #3 on: April 16, 2021, 07:11:19 AM »

Offline guzzisteve

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Re: Loop Plugs
« Reply #4 on: April 16, 2021, 08:20:46 AM »
I don't use NGK, you might try Champion N5C if you can't find the other. Autolite also makes a good plug for them.
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Online Antietam Classic Cycle

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Re: Loop Plugs
« Reply #5 on: April 16, 2021, 08:25:02 AM »
The BP6ES (and all other non-resistor NGK plugs) have been discontinued, what's still available will be old stock. The only place that I'd been able to find them was ordering from Kawasaki through my local mega-dealer, but that supply has even dried up.

No biggie - I'll just use the BPR6ES and non-resistor caps to achieve the same thing as before.

I never use Champion on anything with an aluminum head and Autolite seem to foul easier.
Charlie
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Online n3303j

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Re: Loop Plugs
« Reply #6 on: April 16, 2021, 08:33:01 AM »
NGK also seems to show up under their somewhat meaningless stock numbers in auto part stores.

Part BP6ES = STK 7333 (Per NGK)

But on my last hunt for the non-resistor versions for my T3 I came up empty handed.
Plenty of BPR6ES around though.
They seem to work in my application.
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Online Kiwi_Roy

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Re: Loop Plugs
« Reply #7 on: April 16, 2021, 09:31:51 AM »
Thankyou gentlemen, I printed out this thread to take with me in my quest for a suitable plug.
The old Eldorado is going great since I put it back together, 60 PSI oil pressure and no rattles
I did a compression check, 170 PSI on both sides.
I had forgotten what aa sweet ride this old girl affords, in city traffic it's way better than any of the modern bikes I have.
« Last Edit: April 16, 2021, 09:42:46 AM by Kiwi_Roy »
72 Eldorado
07 Griso 1100
17 V7iii Special

Moto Guzzi - making electricians out of riders since March 15 1921

Online moto-uno

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Re: Loop Plugs
« Reply #8 on: April 16, 2021, 11:19:46 AM »
  You're making me want to get my (much modified ) Le Mans 2 back on the road .  Peter

Online Kiwi_Roy

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Re: Loop Plugs
« Reply #9 on: April 16, 2021, 08:23:14 PM »
  You're making me want to get my (much modified ) Le Mans 2 back on the road .  Peter
Next time you come to coffee bring that or the Peterbuilt, the guys havent seen either.
72 Eldorado
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17 V7iii Special

Moto Guzzi - making electricians out of riders since March 15 1921

Online TOMB

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Re: Loop Plugs
« Reply #10 on: April 16, 2021, 10:18:20 PM »
1970 timeframe

In the loop owners/riders manual when new the plugs were

Ambo Bosch W225T2 - Champion N4  = NGK B7ES

Eldo Champion N3  = NGK B8ES

no extended tip plugs Except N7Y Champion were optional

But the extended tip plugs may have been a new recommended as the newer models came out , BUT that was also when Unleaded gas

was  starting to appear 1970  and extended tip plugs maybe helped with the pinging

TOMB
« Last Edit: April 16, 2021, 10:32:20 PM by TOMB »
TOMB

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Online guzziart

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Re: Loop Plugs
« Reply #11 on: April 17, 2021, 08:37:42 AM »
The BP6ES (and all other non-resistor NGK plugs) have been discontinued, what's still available will be old stock. The only place that I'd been able to find them was ordering from Kawasaki through my local mega-dealer, but that supply has even dried up.

No biggie - I'll just use the BPR6ES and non-resistor caps to achieve the same thing as before.

I never use Champion on anything with an aluminum head and Autolite seem to foul easier.

Good to know, thanks Charlie!  I'll have to check my stash, see what is still available locally and go from there.

Online Moparnut72

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Re: Loop Plugs
« Reply #12 on: April 17, 2021, 08:20:04 PM »
BP6ES are readily available anywhere. It is a common plug.  I used them in my race outboard.
kk
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Online Antietam Classic Cycle

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Re: Loop Plugs
« Reply #13 on: April 17, 2021, 08:35:45 PM »
BP6ES are readily available anywhere. It is a common plug.  I used them in my race outboard.
kk

Up until mid 2020 they were, that is no longer the case. All of my usual sources are out of stock, ebay and Amazon sellers send BPR6ES. The only place source I'd found (through Kawasaki) has now also dried up.
Charlie
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Online Moparnut72

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Re: Loop Plugs
« Reply #14 on: April 17, 2021, 10:24:25 PM »
I found over a dozen on line in under a minute. Yes they are getting scarce but they are out there.
kk
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2019 V7lll Special
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1965 Yamaha Santa Barbara - sold to son in law
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Online Kiwi_Roy

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Re: Loop Plugs
« Reply #15 on: April 17, 2021, 11:42:21 PM »
I went to NAPPA today, they had the BPR6ES in stock so I got those.
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Online Antietam Classic Cycle

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Re: Loop Plugs
« Reply #16 on: April 18, 2021, 07:39:07 AM »
I found over a dozen on line in under a minute. Yes they are getting scarce but they are out there.
kk

As I wrote above, my experience is that you can "find" them online and order them, but what actually shows up isn't a BP6ES, but usually a BPR6ES. Been there, done that four times. I ordered 8 from NAPA which was the maximum quantity they still had available. I'll see Tuesday if the correct plug shows up.
« Last Edit: April 18, 2021, 07:47:06 AM by Antietam Classic Cycle »
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Online Kiwi_Roy

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Re: Loop Plugs
« Reply #17 on: April 18, 2021, 08:47:34 AM »
The Lady at NAPPA didn't even point out that their's had the "R", I will see if I can eliminate that from the cap so I don't have 2 "Rs" in series.
At least I have the right heat range "I think"
« Last Edit: April 18, 2021, 02:41:43 PM by Kiwi_Roy »
72 Eldorado
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17 V7iii Special

Moto Guzzi - making electricians out of riders since March 15 1921

Offline Tom H

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Re: Loop Plugs
« Reply #18 on: April 18, 2021, 10:58:19 AM »
NGK plug caps can be had at 1kohm. Have never found the 0ohm. I think it was LB01 then if you want stud or cap connection.





Tom
2004 Cali EV Touring
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Offline ampm7

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Re: Loop Plugs
« Reply #19 on: April 18, 2021, 01:11:43 PM »
I second Charlie's BPR6ES recommendation as I use them in my two Ambos and they work fine.
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Online pete mcgee

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Re: Loop Plugs
« Reply #20 on: April 18, 2021, 03:30:14 PM »
Buy platinum plugs of the same heat range and change to the zero ohm plug caps.
Saves a lot of wear and tear on the plug hole threads.
I have had a spark plug thread fail and spit the plug out, had it helicoiled and went platinum to reduce the frequency ofspark plug replacement.
Worth considering.
Pete (no not the Bungendore one)


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Online Antietam Classic Cycle

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Re: Loop Plugs
« Reply #21 on: April 18, 2021, 03:47:40 PM »
I second Charlie's BPR6ES recommendation as I use them in my two Ambos and they work fine.

They were what NGK recommended up until recently, then it changed to BPR6ES.
Charlie
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