Thoughts on Weapon XCOP?

[TurboPete]

Need some feed back on the Weapon XCOP , who is using this .
Does it actually work .
I bought another brands COP over a year ago and tried it out , car would miss under low rpm and load so I took it out immediately and gave them away.
I find myself having issue's with the motor missing at 23 psi's and only 5300 rpms, so need to see if its time to finally upgrade .
I thought maybe it was valve floating but my engine builder told me today no way no how , my heads should be good to 7500 .
He says I need a hotter spark , Ive already tried closing the gap more but it doesn't help and the car starts to idle worse so ignition is the last option.

Maybe Ive hit a wall with unported heads and stock cams.


Pete

 

[Hysteria]

A lot of people on ModFords had tried them with the same results as the others and then went back to the stock COPS.

have you thought about moving to Dual MSD DIS 4's.

 

[TurboPete]

A lot of people on ModFords had tried them with the same results as the others and then went back to the stock COPS.

have you thought about moving to Dual MSD DIS 4's.

No not really but seems if I have to go that route my money would be better spent on Ported Heads .
Im pretty sure Ive probably maxed out what the stock heads are capable of. Looks like I need to make a change soon , but before I do I would like to runa 9.60 before changing them out.

Pete

 

[GrnBullitt08]

Im sure your about at the maximum capabilities of the stock heads and cams, I would spend the money on a good set of heads and cams.

 

[lito]

give me an S ... give me a U ... give me a C ... give me a K ... what does it says????

If you get to the conclusion that you are suffering from ignition problems, I would try a BAS instead.

Have you tested brisk -2?

 

[Miracle]

Pete... from PERSONAL experience... stay away from ANYTHING with the name Weapon X on it. WAY more trouble than it's worth.

 

[TurboPete]

Thanks for all the responses guys , makes my decision easier .

Lito , Ive tried Brisk -2s they work great on the Dyno and at the track for a few passes but foul up fast .
Now that Im on E85 they may not foul up as fast but there still like 160.00 for them which is ridiculous for plugs that will only be good for a week .
Besides E85 runs cool already so going even coolder may not be the solution. Seems to me like its more of a cylinder pressure deal. Wants to blow out the spark .
My buddy Manny said to gap them down to .018 to .015 . Ive heard of a few Buick guys down here running high boost in the mid 30s doing the same seems to work. Ill give it a try since thats the most economical solution . If it doesn't work then its time for ported heads, but Ill stick to the stock cams or make a set of custom grinds with factory specs just more lift on the exhaust and intake .



Pete

 

[mac10chap]

my tuner said that pretty much nothing on the market is better than the stock COP's...but he also said that weapons X COP's are about the only thing he would swap out with the stockers if need be...and that would only be on massive build projects.

 

[Nickoli]

Man that is a tight gap. I know allot of guys have said it dose nothing and is worthless but have you ever looked into the kenne bell boost a spark? I put one on my car and also closed my gap from .032 to .028 at the same time. When we started tuning it I didn't have any trouble with spark just after regap so we never touched the bas. Just a thought since you can pick one up a hell of allot cheaper than heads...

 

[TurboPete]

Man that is a tight gap. I know allot of guys have said it dose nothing and is worthless but have you ever looked into the kenne bell boost a spark? I put one on my car and also closed my gap from .032 to .028 at the same time. When we started tuning it I didn't have any trouble with spark just after regap so we never touched the bas. Just a thought since you can pick one up a hell of allot cheaper than heads...

Nick I thought of that as well ,but Ive been told it wont make a difference .
I sent a e-mail to the Kenne Bell guys explanning my situation and if the BAS would work and I have not heard back from them .

I think if gapping the plugs down some more doesn't work then I will save up for the heads . With the heads I should be able to make 950 to 1000 if I can turn the boost up some more and not have the spark issue's .


Pete

 

[05yellowgt]

I don't think ported heads are going to solve your spark blowout issues. As you said it is totally a function of cylinder pressures and the only way ported heads would help is if you lower you boost at the same time. You'll still make 23psi on your turbo if you don't touch the boost controller.

I'm running the 2 colder brisks at 0.25" gap and 27psi of boost and e85 and just have what is either a bit of blow out passed 6000 or my valve springs are just screaming for mercy. Try the Brisks before doing anything else is my vote.

 

[s8v4o]

Plug change then I would start with a BAS (boost a spark). If the factory coils are the "best" then that doesn't leave a whole lot of other options. Well, inexpensive ones that is.

 

[lito]

Another brisk related comment.

They should last more with ethanol if you had problems with race gas before.

 

[aleborjas]

i think you need a plug with no resistor since you need stronger spark eletricity...

 

[05yellowgt]

Another brisk related comment.

They should last more with ethanol if you had problems with race gas before.

I've been on the same brisk plug since my new motor install last Feb. That is about 1200miles of regular driving and a few track visits and a LOT of dyno time.

 

[TurboPete]

I don't think ported heads are going to solve your spark blowout issues. As you said it is totally a function of cylinder pressures and the only way ported heads would help is if you lower you boost at the same time. You'll still make 23psi on your turbo if you don't touch the boost controller.

I'm running the 2 colder brisks at 0.25" gap and 27psi of boost and e85 and just have what is either a bit of blow out passed 6000 or my valve springs are just screaming for mercy. Try the Brisks before doing anything else is my vote.

I dont really want to go ported heads , but here's the thing if I do without touching the Boost Controller my 23 psi's setting will drop because of less restriction but it should make more power at less boost pressure , which cures the problem .

I use to run the Brisk 2 step colder plugs , Im going to try them again with the BAS.

Another brisk related comment.

They should last , more with ethanol if you had problems with race gas before.

Thats a very good point since Ethanol burns cleaner they should last longer.
I will try them out again .


Pete

 

[TurboPete]

You'll still make 23psi on your turbo if you don't touch the boost controller.

I'm running the 2 colder brisks at 0.25" gap and 27psi of boost and e85 and just have what is either a bit of blow out passed 6000 or my valve springs are just screaming for mercy. Try the Brisks before doing anything else is my vote.

Curious to know how much timing do you have at 27psi's . I was thinking maybe it needs more timing ?

Pete

 

[05yellowgt]

I'm running 23* of timing.

 

[lito]

I dont really want to go ported heads , but here's the thing if I do without touching the Boost Controller my 23 psi's setting will drop because of less restriction but it should make more power at less boost pressure , which cures the problem .

I use to run the Brisk 2 step colder plugs , Im going to try them again with the BAS.

Thats a very good point since Ethanol burns cleaner they should last longer.
I will try them out again .

Pete

If your boost controller uses duty cycle based control you will basically have the same airflow output out of the turbo. But that does not means you will have the same pressure. You are right there.

The thing is this, boost is a measure of restriction, in a setup if all the conditions are kept the same and you up the air pump (turbo in this case) output your pressure will raise as the cylinder filling. Still good.

The thing is that you are changing the heads and that is a condition change, you air delivery will be basically the same, your boost will lower but the cylinder pressures will remain because you are filling the cylinder with more air at less pressure so your ignition problem will still be there.

Heads work won't help you there.

Also, I would wait on the BAS if you are going to try the tighter gapped -2 brisk, then would test a BAS. (I just say this to really find out if the new plugs are helping out by themselves or not)

 

[05yellowgt]

I'd agree, one thing at a time. I'd be willing to bet that the spark blowout issues will be all but solved with the Brisk plugs based on the way my car behaves