416 Turbo keeps burning #7
TECH Addict
Joined: Dec 2004
Posts: 2,173
Likes: 619
From: Florida
non-resistor. which brings up a whole different conversation. left over from my carb/bbc days, i know i have some around still, and have used them on and off in ls stuff over the years and never remember any issues but im going to see whats in the wagon now since i was having all those logging issues. i put that car together kinda quick with as much of what i had around, so theres no telling what found its way in there. edit: ran out to the garage and it has r5671a-7s. 
sorry about derailing the thread.
sorry about derailing the thread.
Yeah I like to stick to R plugs if possible. Just preference. I've seen EMI issues, not specifically with plugs because Ive only ever ran R types, but other EMI issues related to spark.
my mistake his post says BR7 and i read TR7.
i always use 5671s instead of br7s so it didnt immediately register as non-tapered tip in my head
i still would be interested in seeing what the hot side of the kit looks like. real bad backpressure may be able to cause these issues
i always use 5671s instead of br7s so it didnt immediately register as non-tapered tip in my head
i still would be interested in seeing what the hot side of the kit looks like. real bad backpressure may be able to cause these issues
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
So we burned #7 up again.
It seems to do it when using the scramble, the car makes a little over 900rwhp on 14lb, the scramble puts basically pins the gate. I can't see the boost going over 16lb, we weren't able to log the pass. I feel like the turbo is already maxed out (Billet 480).
Also, this is a rear mount setup and it seems the scavenge pump isn't keeping up, so it's getting a new pump. The rear cylinders had the most oil in them. I think the next outing we are going to try to pull 2-3* out of cylinder 7, if this is possible with MS3pro. I don't know what else to do. We have additional fuel going to 7, from like 8lb at 5% to 12% or so at 14+lb.
It seems to do it when using the scramble, the car makes a little over 900rwhp on 14lb, the scramble puts basically pins the gate. I can't see the boost going over 16lb, we weren't able to log the pass. I feel like the turbo is already maxed out (Billet 480).
Also, this is a rear mount setup and it seems the scavenge pump isn't keeping up, so it's getting a new pump. The rear cylinders had the most oil in them. I think the next outing we are going to try to pull 2-3* out of cylinder 7, if this is possible with MS3pro. I don't know what else to do. We have additional fuel going to 7, from like 8lb at 5% to 12% or so at 14+lb.
And why are you not able to log ? Any decent aftermarket ecu should be able to log..
And what coils/wire routing are you using ? And as has been touched on but not answered, what dwell times ?
And no, you should not be using non-resistor plugs.
Have the injectors ever been tested properly ?
Assuming your fuel system is good as you seem to say it is, and tuning is as you say too.....then something with wiring or setup may be causing a spark at a rather inappropriate time. Whether it's wiring, coil, triggering....something along those lines.
What do you mean "you can't see boost going over 16lb" ?
And why are you not able to log ? Any decent aftermarket ecu should be able to log..
And what coils/wire routing are you using ? And as has been touched on but not answered, what dwell times ?
And no, you should not be using non-resistor plugs.
Have the injectors ever been tested properly ?
Assuming your fuel system is good as you seem to say it is, and tuning is as you say too.....then something with wiring or setup may be causing a spark at a rather inappropriate time. Whether it's wiring, coil, triggering....something along those lines.
And why are you not able to log ? Any decent aftermarket ecu should be able to log..
And what coils/wire routing are you using ? And as has been touched on but not answered, what dwell times ?
And no, you should not be using non-resistor plugs.
Have the injectors ever been tested properly ?
Assuming your fuel system is good as you seem to say it is, and tuning is as you say too.....then something with wiring or setup may be causing a spark at a rather inappropriate time. Whether it's wiring, coil, triggering....something along those lines.