Author Topic: 1400 Spark Plug Wires  (Read 765 times)

Offline et18

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1400 Spark Plug Wires
« on: March 26, 2021, 06:16:05 PM »
Has anyone found a good aftermarket source for 1400 spark plug wires?  I just can't bring myself to pay $200+ for the OEM set.  I'm running NGK caps on the OEM wires and at least one of them is causing misfires above 4K RPM.  I'd just replace the caps again but I don't think there is enough wire left on them to trim anymore off and still reach the plugs.  I can tighten the caps up on the wires and it fixes the problem for a while but the problem always pops back up a couple months later.

Thanks
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Offline lucian

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Re: 1400 Spark Plug Wires
« Reply #1 on: March 26, 2021, 06:42:28 PM »
Any local auto parts store should have copper core HTL in stock.  Make sure you have the proper plug seals on the caps as water intrusion is easy peasy through the gaping gap above the exhaust ports. 

Offline 73 sport

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Re: 1400 Spark Plug Wires
« Reply #2 on: March 26, 2021, 08:15:15 PM »
check out "Magnecore". They will make Ign.wires to your specifications. What is it with id...s that think they have to stay with OEM?

Offline Charles in Lake Charles

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Re: 1400 Spark Plug Wires
« Reply #3 on: March 27, 2021, 06:56:47 AM »
Belden Bulk Wire at NAPA www.napaonline.com/en/p/BEL734803
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Re: 1400 Spark Plug Wires
« Reply #3 on: March 27, 2021, 06:56:47 AM »

Offline leroy_can

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Re: 1400 Spark Plug Wires
« Reply #4 on: March 27, 2021, 06:19:42 PM »
 I just put a 1400 engine in my 87 LMIV so I very recently had to sort ign. wires out. I don't know what type of connection is at the coil for sure on a stock 1400 but it looks pretty standard. A good auto parts store would be able to match up some 4 cyl wires with the same ends and then cut them to length and run the NGK ends.I was surprised to hear solid copper core mentioned but a set of 1400 wires on ebay did appear to say that on them. If that is required for some reason you may need to use bulk and you can get ends for the coil as well. When I was building mine I found the recommended NGK ends to be SB05E but it turns out SD05E would have been the right ones. The "D" means the boot at the plug end is a proper fit on the insulator on 10mm plugs because the "B" is larger for 14mm plugs. Thus the "B" sized boot will allow moisture in. SD05E exists but nobody locally had them and even ebay only had them in Europe. Since I had the SB05E,s I am running the loose boots for now and bought the cheapest ones I could get with a D as the second character  (LD05FP) and when they arrive I will use those boots. Another issue was with the boot on it was very tight to push into the hole for the main plug and to make sure I could pull them out later I actually chucked the up in my lathe and took a little off the lip at the bottom so the boot had less of a bulge there. For whatever reason the outboard holes were not as tight. Also I believe it is important to not mix the inboard and outboard wires as the outboard only fires when the computor deems it necessary. At least that is my understanding.
    The unusual depth of the recessed hole for the plugs and the fact that there seems to be only the one NGK plug for this engine limits your choices at the plug end because you are stuck with the non removable tip where the lead connects.
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Offline LowRyter

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Re: 1400 Spark Plug Wires
« Reply #5 on: March 27, 2021, 09:25:32 PM »
Leroy, post your 1400 Lemans conversion. 
John L 
When life gets you down remember it's one down and the rest are up.  (1-N-23456)

Offline leroy_can

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Re: 1400 Spark Plug Wires
« Reply #6 on: March 27, 2021, 10:03:52 PM »
Leroy, post your 1400 Lemans conversion.
[/quote
    It's near the top of the builds section you can't miss it.
1973 XLCH cafe Shovester #1
1973 XLCH cafe Shovester #2
1971 Homemade cafe '08 XB12S motor 71 CH frame
2002 Buell M2 Cyclone
1987 LMIV SE 1400 conversion in progress

Offline et18

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Re: 1400 Spark Plug Wires
« Reply #7 on: March 28, 2021, 11:06:31 AM »
Thanks, guys, lots of good info here that should make this a quick and easy job. 

Love the LMIV project, I bet that bike gets all the attention at Euro-bike night.
2014 California Touring
1994 BMW R1100RS
2001 BMW R1200C

Offline et18

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Re: 1400 Spark Plug Wires
« Reply #8 on: April 06, 2021, 08:12:45 PM »
You guys called it, the weak firing was likely due to water intrusion and somewhat loose fitting caps.  The washers on all four plugs were starting to rust.  New plugs along with the 24K schedule and it's running like a top again. 

I did the charcoal canister line delete along with the regular scheduled items and I'm really not sure if it's ever run this strong before.  Has anyone here done the canister line delete in isolation and noticed a big difference?  This is the line that runs into the right throttle body, just remove the line and plug the hole.
2014 California Touring
1994 BMW R1100RS
2001 BMW R1200C

Offline pauldaytona

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Re: 1400 Spark Plug Wires
« Reply #9 on: April 08, 2021, 03:57:05 PM »
and for an easy extraction of the ngk caps, use a small size tyrap around it and pull at the end. Leave the Tyrap on the cap forever.
Paul

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Offline johnl

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Re: 1400 Spark Plug Wires
« Reply #10 on: May 19, 2022, 06:47:56 AM »
and for an easy extraction of the ngk caps, use a small size tyrap around it and pull at the end. Leave the Tyrap on the cap forever.

Hi Paul, when using the NGK caps are there any problems with too much water get in to the plugs, because they don't seal around the top like the OEM ones.
Cheers, John.

Offline et18

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Re: 1400 Spark Plug Wires
« Reply #11 on: May 19, 2022, 08:22:08 PM »
Thatís exactly the problem I had, the NGK caps worked great for several weeks every time I changed them but eventually water intrusion would short them out. In the end I bought a set of OEM wires and havenít had a problem since.
2014 California Touring
1994 BMW R1100RS
2001 BMW R1200C

 


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