Best Spark Plugs to use with wynjammer...

[flatblack]

Like the title says...what spark plug brand? and how do you tell if they are a colder plug?

[Physh1]

Copper core plugs are ideal for perforrmance mods IMHO. They are cheap and work very well. Platinums and plugs like that are for longevity and not so much max performance. I run NGK copper core plugs on my whippled 454 and they are 1 step cooler than stock. There is no way to tell that a plug is a step cooler or not....you can only tell by the model number on the box. You didn't mention what truck/engine this would be going on but gap is important too....you'll usually want to close the gap a bit as well....

Cameron

[flatblack]

it would be on a 01' 4.3 soon to be wynjammed...i think wynjammer recommends a gap of .35 to .40 if that sounds right??

[Physh1]

.035 sounds better.....

.35 or .40 is like 1/3 to 1/2 an inch...lol

Cameron

[flatblack]

DOH!!!!! get it...:D

[LoRyder]

AC Delcos? Should we get new plugs or just regap our current ones?

[Supercharged-ZQ8]

I run Champions -- copper, and cross-referenced to be the Delco R43LTS plugs (one range colder), gapped to .040 (would be .035, but slightly larger gap due to the MSD box).

I run the Champions because I needed the plugs changed IMMEDIATELY, and no one local had the Delcos I wanted.

Do NOT run platinum plugs if you can help it. The added combustion and heat cause the platinum to flake off and go into the cylinders -- never a good thing.

[bvr775]

colder the plug the longer the insulator. read obis' post in the tech section

[biglouie_underpressure]

i run ngk tr6's with 10-15psi

[Finkle]

since we are on this subject. Al told me to change my plugs b4 i put my s/c on and i did that last night and he told me to gap it at .04, so i did that and my truck was mis-firing like a mo fo. i tried several different kinds of plugs but still the same result. So i ended up settling with irandium's. I think imma call Al in the morn and see what might've gone wrong

[flatblack]

i'm just guessing, but maybe that gap is for when you have the s/c and programming in place?? once again just a guess...

[Joe]

you probable got the firing order screwed up. or you cracked the porcelin on a plug

[Physh1]

since we are on this subject. Al told me to change my plugs b4 i put my s/c on and i did that last night and he told me to gap it at .04, so i did that and my truck was mis-firing like a mo fo. i tried several different kinds of plugs but still the same result. So i ended up settling with irandium's. I think imma call Al in the morn and see what might've gone wrongIn my opinion, .04 is too large of a gap. I'm running an MSD coil and box in my blown 2000 454 and it still misfired at .04 gap.....a gap of .035 is a good starting point. However before you change them double check the firing order and connections...

Cameron

[Waynestowels]

I run Champions -- copper, and cross-referenced to be the Delco R43LTS plugs (one range colder), gapped to .040 (would be .035, but slightly larger gap due to the MSD box).

I run the Champions because I needed the plugs changed IMMEDIATELY, and no one local had the Delcos I wanted.

Do NOT run platinum plugs if you can help it. The added combustion and heat cause the platinum to flake off and go into the cylinders -- never a good thing.

Can you name a plug and the number you would recommend running?

Also, what does the MSD box do for you..., does it really make a difference? Milage? power?
Is there a noticable difference over stock with only the Wynjammer upgrade?

Thanks!

[joker2040]

Well, I don't run a supercharger... BUT I do spray a 100 shot from time to time. I'm running the same AC Delco R43LTS... no wait they might be R42's hmm... never the less that's what I'm running gapped at 0.035 with no problems. Closing the gap shouldn't cause misfires though. Well within reason. Closing the gap should help prevent against them.

[joker2040]

Can you name a plug and the number you would recommend running?

Also, what does the MSD box do for you..., does it really make a difference? Milage? power?
Is there a noticable difference over stock with only the Wynjammer upgrade?

Thanks!

An MSD will help produce a better spark which in theory would burn fuel more efficiently and produce better gas mileage. When I was running my MSD 6A I didn't notice any hp gain. Yeah it might have added 1 or 2 but it was not a big difference. Now don't take me wrong when I say this but the MSD isn't worth buying if you are buying it for a horsepower gain. It is worth buying though for the overall gains and the possibillities with a forced induction application (i.e. ignition retard and rev limiters). Like I said before I had a MSD 6A but I have since sold it. I now have an MSD Digital 6 Plus because I think that will suit my application best. I haven't hooked it up yet. Waiting for a pretty day when I have time. Install is very easy!

[Finkle]

i gapped my plugs at .040 and this was w/o the supercharger and it caused my truck to misfire. Now could that be cuz i need to have the blower on and configed. or do i need to upgrade my coil b4 i can start closing the gap?

[Supercharged-ZQ8]

Can you name a plug and the number you would recommend running?

Also, what does the MSD box do for you..., does it really make a difference? Milage? power?
Is there a noticable difference over stock with only the Wynjammer upgrade?

Thanks!
R43LTS or R42LTS Delcos

MSD box gives multiple sparks up to 3300 rpm, and after that it gives a more poweful spark -- better combustion of air/fuel mixture. YES! An ignition box makes a difference -- mileage will increase (unless you go into WOT all the time, but even then the MSD box will still make a difference for the better) and power will increase due to the higher efficiency of the ignition system.

Yes, there is a noticeable difference by doing only the Wynjammer -- you're suddenly adding a 65 rwhp kick in the pants, which is nothing to sneeze at -- it is the single most powerful mod you'll ever do.

[Waynestowels]

Great info:)

Which MSD part number do you recommend?
Gas milage is a big priority now.
Al said the S/C would add milage as long as you do not keep your foot in it.
I am not building a "hot rod", but am mainly interested in the MPG and power secondary..., trying to see how much milage I can get while adding power too..., best of both worlds kinda thing:)

[Supercharged-ZQ8]

The MSD box I would recommend depends on what transmission you have. If you have an automatic, leave the stock shift points in place and go with the MSD 6A. If you have a 5-speed I would suggest using an MSD6AL (it has a built in rev-limiter).

Why? Because the stock rev-limiter cuts fuel at max rpm -- something that is VERY bad. If you have an automatic, you won't hit that stock limiter since the transmission (with stock shift points in place) will shift before hitting the limiter.

With a manual, you WILL hit the stock limiter if you're not careful. The stock limiter cuts off fuel, but the MSD limiter cuts spark (although it continues to allow fuel flow). Better to have the spark cut than the fuel cut -- especially under boost.

Of course, by and large, if you're boosted and EVER plan on increasing that boost, just go for the 6BTM -- it has a built in timing retard if you need it (for when you're in boost) and also has the built in rev-limiter. Of course, you can always add a BTM module to the 6A or 6AL at a later time.

No matter which one you go with, the result will be the same: increased/improved combustion, which means more power and better fuel economy.

And, as long as you don't go WOT very often, you will see an increase in mpg with the S/C -- as the engine is breathing easier. But, the minute you hit WOT, you'll see a DECREASE. As long as you drive conservatively, you'll see better mileage.

For the time being, I would say go with a 6A or 6AL -- 6A = automatic/6AL = manual.

[Sy-Clone]

I use NGK tr6 gapped at .035 PEACE>Tony

[Supercharged-ZQ8]

I use NGK tr6 gapped at .035 PEACE>Tony
Tony, how do you like the NGKs? I've never used them, and have considered them as my next set.

[joker2040]

The MSD box I would recommend depends on what transmission you have. If you have an automatic, leave the stock shift points in place and go with the MSD 6A. If you have a 5-speed I would suggest using an MSD6AL (it has a built in rev-limiter).

Why? Because the stock rev-limiter cuts fuel at max rpm -- something that is VERY bad. If you have an automatic, you won't hit that stock limiter since the transmission (with stock shift points in place) will shift before hitting the limiter.

With a manual, you WILL hit the stock limiter if you're not careful. The stock limiter cuts off fuel, but the MSD limiter cuts spark (although it continues to allow fuel flow). Better to have the spark cut than the fuel cut -- especially under boost.

Of course, by and large, if you're boosted and EVER plan on increasing that boost, just go for the 6BTM -- it has a built in timing retard if you need it (for when you're in boost) and also has the built in rev-limiter. Of course, you can always add a BTM module to the 6A or 6AL at a later time.

No matter which one you go with, the result will be the same: increased/improved combustion, which means more power and better fuel economy.

And, as long as you don't go WOT very often, you will see an increase in mpg with the S/C -- as the engine is breathing easier. But, the minute you hit WOT, you'll see a DECREASE. As long as you drive conservatively, you'll see better mileage.

For the time being, I would say go with a 6A or 6AL -- 6A = automatic/6AL = manual.

Couldn't have said it better myself!

[lyonsfam1]

i also use the TR-6 Ngk at a .035 gap runs great and i love NGK's they always treat me right