twin spark plugs on 3.2s?
#17
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Originally posted by Matt_PA
roughly what is the cost of twin-plugging a 3.2?
-Matt
roughly what is the cost of twin-plugging a 3.2?
-Matt
You will need to modify the engine tin on the front drivers side (clearance for lower plug on #3), and mod the engine tin for the second plug wires, and possibly address some clearance issues on the drivers side heater duct and engine tin below the distributor.
For a 3.2 you need a 964 distributor, a second coil, a signal splitter from the ignition. I would assume that you would need a custom chip with revised timing map, as a twin ignition setup won't need as much advance.
For a SC you need to change the crank gear to use the 964 based distributor conversion from Steve. It will end up looking like this:
![](http://forums.rennlist.com/upload/complete_top.jpg)
![](http://forums.rennlist.com/upload/complete_bottom.jpg)
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Tom
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Emcon5,
If the above picture is current and correct you are missing a critical piece of twin-plugged-ness. The hold-downs on the bottom plugs. These are small metal pieces that fit under a valve-cover bolt and provide an arm that 'protects' the rubber spark boot and 'keeps it in place'
I didn't have these installed on mine and every couple of hundred miles I'd find a bottom plug out of socket, flopping around. Rocks, bumps small animals seem to cause the occasional pull.
2 cents
If the above picture is current and correct you are missing a critical piece of twin-plugged-ness. The hold-downs on the bottom plugs. These are small metal pieces that fit under a valve-cover bolt and provide an arm that 'protects' the rubber spark boot and 'keeps it in place'
I didn't have these installed on mine and every couple of hundred miles I'd find a bottom plug out of socket, flopping around. Rocks, bumps small animals seem to cause the occasional pull.
2 cents
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Originally posted by Lomotpk
Emcon5,
If the above picture is current and correct you are missing a critical piece of twin-plugged-ness. The hold-downs on the bottom plugs. These are small metal pieces that fit under a valve-cover bolt and provide an arm that 'protects' the rubber spark boot and 'keeps it in place'
Emcon5,
If the above picture is current and correct you are missing a critical piece of twin-plugged-ness. The hold-downs on the bottom plugs. These are small metal pieces that fit under a valve-cover bolt and provide an arm that 'protects' the rubber spark boot and 'keeps it in place'
Do you have a picture of how yours look?
Thanks,
Tom