Im buying some parts for a tune up and just need some opinions.

1. Im getting autolight 3923 plugs just need to know what to gap them too.
2. What brands are good for wires? Would there be a down side to having wires that are to big? Im not planning on doing any ignition upgrades, just want good quality wires.
3. What bout dist cap and rotor? All I remember is brass is better than aluminum I think...
4. Any Tstats better than others? I know the 180 is the one to get but anything else to look for?

And lastly where to get it all? Im looking at summit right now.

 

1: the gap size should be under the hood on a sticker or call autozone and they will tell you.

2:msd / accel are both good the only downside to to bigger wires is bigger cost

3:get a dist with solid brass connectors
accel makes a kit comes with wires cap rotor and plugs

http://www.jegs.com/i/Accel/110/TST10/10002/-1

4. as far as i know all thermostats are about the same.

 

Gap 3923's at .035 if engine is stock, you can go to .040 if you have ignition mods. 3923 runs great in the 3.9. Personally, I like the Belden Premium plug wires from Napa. They cost about $36.00 a set but they are very good quality wires and they work great. The Napa distributor cap and rotor button with brass contacts work best in the 3.9. Napa part # MO 26 and MO 28 I think. Napa also sells the 180 degree thermostat. Get the one called "Super Stat". It costs about 8 or 9 bucks but is much better quality than the cheaper one. The cheap ones don't always work right and I have heard they get stuck and don't always open at the right temperature.

I don't work for Napa or anything but I have found out the hard way it's best to get the best quality parts you can buy, instead of cheap ones that you have to buy and replace again way too soon. On my truck anyway I have had the best luck with Napa parts.

Jimmy

 

Napa has a good wrap. I had bedlen wires. On the 3.9, they worked good. I need to go get a brass cap for the 5.9 I got the crappy tire one.... non brass as I needed it that day...

 

Cool thanks for the info everyone!

 

What would I need to have done to gap the 3923's to .040?

 

get a spark plug gapper at autozone or somewhere and use a hard surface to close the gap or pliers or something to open it. the gap is the space between the two surfaces on the bottom of the plug. i've had luck though and both times i've bought plugs they've been the right gap i'd still check them though

 

The higher gap would be beneficial if you had ignition mods like a hotter coil or upgraded distributor. Like MSD.

Jimmy

 

Ok thanks. I dont see and MSD in my kota's future. BMW is my play car the kota is my DD and needs to be at 100% all the time.

I grabbed everything at napa today (while on a delivery ) just had a question. To replace the tstat do I need to drain the coolant? I know where it is and it looks easy just done want to ruin my parents new garage quite yet...

 

shouldn't have to drain the coolant, but it will leak all over you try to push it down the tube if you can than disconnect. Trying to loose as little as possible, just pull the hose up and hold it up..

Chris