Plugs Are Sorted, Now Wires
#1
Plugs Are Sorted, Now Wires
I'm replacing plugs with the type that came with the HO, which are AC Delco MR43LTS with a .040 gap (a marine plug if you can believe it). The wires were 8 mm Chevrolet Bowtie Logo wires, but I think I'll try a universal set of some sort that I can cut to size. I'm considering the following:
https://www.summitracing.com/parts/sum-860825r
https://www.jegs.com/i/JEGS/555/40201/10002/-1
https://www.jegs.com/i/Taylor/895/73251/10002/-1
I'm open to suggestions.
JamesC
https://www.summitracing.com/parts/sum-860825r
https://www.jegs.com/i/JEGS/555/40201/10002/-1
https://www.jegs.com/i/Taylor/895/73251/10002/-1
I'm open to suggestions.
JamesC
Last edited by JamesC; 09-17-2021 at 07:15 AM.
#2
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Plugs Are Sorted, Now Wires
The ACDelco Marine version of the R44LTS, would be Part Number: MR44LTS.
I have not seen the MR44LTS Spark-Plugs in stock anywhere for some time...
However, I do often see the MR43LTS Spark-Plugs available (One Temperature-Range Cooler).
I have not seen the MR44LTS Spark-Plugs in stock anywhere for some time...
However, I do often see the MR43LTS Spark-Plugs available (One Temperature-Range Cooler).
#3
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Plugs Are Sorted, Now Wires
CR43LTS (Commercial/ extended-life/ intended not to foul from excessive Engine Idling Time) were Stock for many of the 350 Vortec Engines that were built for Vans.
Not too COLD of a plug for a 9.25:1 Compression Vortec 350.
Not too COLD of a plug for a 9.25:1 Compression Vortec 350.
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vorteciroc (09-17-2021)
#5
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Re: Plugs Are Sorted, Now Wires
This is my choice for cut to length.
https://www.summitracing.com/parts/msd-5553
Options for cap terminal. 90 degree plug ends.
Also available in red.
https://www.summitracing.com/parts/msd-5553
Options for cap terminal. 90 degree plug ends.
Also available in red.
#6
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Plugs Are Sorted, Now Wires
For Street Cars that do not require anything fancy for Ignition-Wires...
I like to use the Accel 9000 Ceramic-Boot Wires.
Great for Turbocharged Engines:
I like to use the Accel 9000 Ceramic-Boot Wires.
Great for Turbocharged Engines:
#7
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Car: 86 IROC
Engine: Twin turbo L31 HSR
Transmission: 700R4 w ProBuilt
Axle/Gears: 9 bolt 4.11
Re: Plugs Are Sorted, Now Wires
I've used the Summit 860825r with good success. Notwithstanding the above comment, I've heard that the ceramic boots don't stay on well. I should add I previously used the Taylor Thunder Volt 8.2 wires and couldn't tell the difference. Maybe just me...
Brian
Brian
Last edited by brian p; 09-17-2021 at 03:44 PM. Reason: more info
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#8
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Plugs Are Sorted, Now Wires
I have made hundreds of Ignition-Wires with those Ceramic-Boots by now, and have never had an issue.
Also, it is the Terminal inside of the Boot that holds everything on to the Spark-Plug.
Not the Boot itself.
If you ever have a loose fitting Terminal, you can bend it in order to fit properly...
or just replace it.
Also, it is the Terminal inside of the Boot that holds everything on to the Spark-Plug.
Not the Boot itself.
If you ever have a loose fitting Terminal, you can bend it in order to fit properly...
or just replace it.
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Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Plugs Are Sorted, Now Wires
Well, I just HAVE TO ask....what is it about these plugs that makes them marine plugs (I was thinking in terms of a corrosion reducing coating on the metal parts), and what make them a "Non-Automotive Spark Plug"?
#10
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Re: Plugs Are Sorted, Now Wires
Looks like a short insulator? Maybe the wire boot covers all the way to the metal base?
#11
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Re: Plugs Are Sorted, Now Wires
Here's the official response from ACDelco.
The only difference is marine and non-marine. ACDelco marine plugs feature
a nickel-plated, rust resistant shell on all applications, and a clipped
side electrode on some applications. These plugs are designed for higher
RPM engines. They also have a larger heat sink, and the porcelain is not
only pressed into the heat sink, it is glued.
Spark plugs must operate within certain limits if they are to provide the
performance and service life expected. Engine manufacturers select a type
of spark plug for the normal or expected service for which the engine was
designed.
The heat range, which is designated by the second numeric digit (second 4)
is the same in both spark plugs.
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DynoDave43 (09-19-2021)
#12
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Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Plugs Are Sorted, Now Wires
Thanks Skinny Z. So I wasn't nuts in think the exterior was coated against corrosion, but there is more to it than that. Good to know.
Sorry to drag your thread off topic JamesC. This was supposed to be about wires, and not plugs. But my curiosity got the better of me.
Sorry to drag your thread off topic JamesC. This was supposed to be about wires, and not plugs. But my curiosity got the better of me.
#14
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Plugs Are Sorted, Now Wires
I was just going to say, the only real difference is...
They wont be totally rusted looking after a few weeks.
They wont be totally rusted looking after a few weeks.
#17
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Re: Plugs Are Sorted, Now Wires
Never hurts to give them a blast. It's the tooling that can be real pain. I've an assortment of sockets and wrenches to allow for good access. The 5/8" offset box end wrench gets to all the plugs but I only need it for a few. The rest are plug socket and ratchet accessible.
The Knuckle Saver
The Knuckle Saver
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Carlos89 (09-21-2021)
#18
Re: Plugs Are Sorted, Now Wires
JamesC
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