Bowtiedford

iTrader: (9)

I keep burning the ground strap off of cylinder 1 or 3 the past few test hits. Just trying to see if its a coincidence?
done it now 3 times in a row
3rd time bought timing down to 20*

EFI Fast 102 with nitrous outlet 2 stage plate. 150 1st, 100 2nd instant hit. Stand alone fuel with 110 at 55 psi
62 pill 28 pill 150 fuel was 33 on old chart
52 pill 23 pill 100 fuel was 28 on old chart
this is on the new jetting chart nitrous outlet is using.


NGK 1049 8 range plug now maybe #1 plug or #3 plug
NGK 7's usually burnt 1 and 3 why went to 8's

injs only at 62% duty cycle when data logging. nothing amiss on log. a/f says its right on. HP tuners and tuned by Jeramy Formato.

stock fuel rail entrance use to be on drivers side but flipped it to passenger side. so the cylinder burning strap is on far side of the rail fuel fitting. coincidence??

just trying to see if when you guys are burning plugs, is it random plugs or usually the same ones. Just trying to narrow the problems.
we had a few that we fixed.

when we had only a 1 stage plate.
previously on old jetting chart at 150 only we never burnt plugs, timing at 26*, pulled fuel off the rail and never burnt plugs or lean at all.

sorry for the long post just trying to see or get ideas

jblankenship

iTrader: (5)

too much timing

Bowtiedford

iTrader: (9)

so how much timing do you run? and shot size, Like I said ran 150 on 26* and never had an issue. Now having 2nd stage come in.

GIMPY02

What do all the other plugs look like?

JL ws-6

iTrader: (50)

Too much timing and possibly the way the plate is distributing.

I don't like using more than 175-200 hp thru anything other than a fogger with the stock style intakes. Single plane intakes you can get away with a lot more on a plate as long as it's set up right.

If you have 26 with the 150 that's a lot, probably a couple too many, likely need it back to about 17-16 with both kits on fwiw, dunno where you have it.

Bowtiedford

iTrader: (9)

with the second stage I bought the timing down to 20* since it had no problems on 150 at 26* when I had only the 1st stage working. Also was using NGK 7 and now went to the NGK 8 (1049) The timing mark is around the bend area of the ground strap. I was wondering about the distribution now spraying on the 2nd stage also.

Did check some other plugs and did see 1 where the tip of the strap looked a little worn out (edges where more curved then straight) looks like it got hot. The other plugs looked good.

Going to take out 2 more degrees (18)and decided to go back to Nitrous Outlet old fuel jetting chart also. On the new chart they are using, the fuel pills have been leaned out for a more accurate power setting they said I believe.

JL ws-6

iTrader: (50)

I think you need to put some pictures of the plugs up on here, I did a sticky a long time ago did you read it? I think you should have went to a 8 plug as soon as you out the 2nd stage on.

RobsZ28

iTrader: (3)

I would think 7's are too hot of a plug for 250, I use 8's on 200 pulling 7* without a single issue.

Bowtiedford

iTrader: (9)

yes using the 8's now, I guess the 2nd stage is just putting such more of a demand on the system.
My original thinking was 150 and 26* on NGK 7 and never had an issue and now just trying to add 100 and keep burning up the same cylinder.
I'm going to try again Wednesday at the track and see what it does.

So 150 1st and 100 2nd and went back to old fuel settings on Nitrous outlet jetting. and will pull 2 more degrees. total of 18 now.
110 in standalone.
I think some of it started when I changed the fuel pills to the new settings and didnt really check things.

Whats funny is did drive the car home with no hiccups and saw that the plug was bad and that was on a 6:07 pass at 112mph.

Bowtiedford

iTrader: (9)

I might try just a straight 200 shot at 18* to see how things are working. Only started to have problems when I hit the 2nd stage. I'm wondering if its a distribution problem as stated by JL ws-6

JL ws-6

iTrader: (50)

I think you'd be wise to put the new jetting back in on the 2nd stage as the 2nd stage usually runs fat, ditch the 110 in the fuel cell and put a 116 or good nitrous fuel in the stand alone. A better quality fuel will go a long way with improving the tuning window.

Too rich will hurt parts just as fast as too much timing will.

Bowtiedford

iTrader: (9)

yes I was thinking of changing the fuel to 116 in the standalone.

62 pill 28 pill 150, fuel was 33 on old chart
52 pill 23 pill 100, fuel was 28 on old chart
this is on the new jetting chart nitrous outlet is using.

so you think go to the 28 pill on the 2nd stage or do you mean go back to the new chart which says it should be 23 on the 100 shot

JL ws-6

iTrader: (50)

62/33

52/23

Bowtiedford

iTrader: (9)

Thanks going to give it a try.

blk00ss

iTrader: (66)

This. I'm running a NO plate with 78 pill, c16 in the stand alone, ngk 8's, 8 degrees pulled.

Bowtiedford

iTrader: (9)

I haven't used 7's in a while. Been using the 8's def going to C16 and once I have the fuel under control I will try the Q16 fuel.

JL ws-6

iTrader: (50)

I wouldnt touch q with nitrous. C16, or c23 n2o fuel if you are committed to vp fuel. If not and you have access to renegade the nitrous 116 is a very good fuel, 120 pro nitrous fuel is about as good as it gets

Bowtiedford

iTrader: (9)

ok thanks I'll check, I know they carry C16 for sure. Wednesday here I come. I will let you know how it turns out.

jblankenship

iTrader: (5)

nitrous outlet 78mm 2 stage plate. 53/24 on both stages, pulling 8 from 26 on 93 octane.
b8ef plugs.

shortdog

iTrader: (1)

I was using a #9 plug w/very conservative timing (12*) on a 250 hit.

You outta do a compression/leakdown test to make sure nothing's hurt.