No problem Neal, I know i'm close but just no 100%

Update, Tony @ Speed inc sent me the timing info. He says 26 deg total timing.

Thanks to everyone for the help

 

is that 26 on the kit? or 26 on motor, im hoping its the second one.

 

Sweet setup, thanks.

 

I see a few things I would like to make sure I have a clear understanding on.

1. You have a heads and cam motor with bolt ons?
2. What do you have fuel system wise?
3. Total timing N/A is 26 degrees or that is on nitrous?
4. What fuel are you running?
5. What was the spark plug gap on the number 7s?
6. What was the air fuel?

.073 Nitrous and .038 fuel is on the average a 175hp. I would be leaning towards pulling 8 degrees of timing.

Unless you have a the heads shaved a lot and high compression the number 7 plugs should be fine. They should be gaped about .034.

Do you have a fuel pressure gauge on the car? If so is it maintaining fuel pressure down the track?

Dave

 

26 pulling 4 is the way I read it Dave.

 

I asked Speed if that was on the N2o or N/a, waiting to hear back. I'm assuming what Martin said, 26 & i'm pulling 4 when the juice is on.I see a few things I would like to make sure I have a clear understanding on.

Dave,
1. Yes thats correct
2. LPE high-flow pump, originally I had fuel issues when on the dyno, put that pump in and all the problems went away.
3. Working on finding out that answer, i'm assuming 26 is N/A - I will let you know asap
4. 93 Octane pump gas with 5 gallons of Sunoco 110 (leaded)
5. All gaps were & still are .035"
6. Not sure, the one thing I didn't do that I usually do is log the A/F w/ my FAST dual O2 meter - I will next pass

Sounds good on the -8 timing

The heads are milled a little bit, its 11:1 compression.

Yes, i had a Marshall brand fuel pressure gauge on the car, it was giving me fits so I just install your liquid filled gauge, it idles at 58psi & doesn't change when you change rpms. Although, its under the hood so I'm not sure what it does at WOT. Originally on the dyno it hardly changed.

Thanks!

 

FYI, Tony @ Speed inc already wrote me back (Nice Customer Service!!!)

26 deg timing is N/A

 

Hello?? Dave?

 

That would put you at 22 I would try at least 18-19 degrees timing and go from there slowly.

 

if its a 10 lb bottle, you might have been low on nitrous. i can only get two 1/8 hits before i see performance dropping.

 

Sounds good Martin so I'll take out at least -7

Qwik, no I run 2 10# bottles, 2 heaters, I weigh them w/ a digital scale.

 

That's a very similar setup that I tuned for a buddy of mine. Same plate and all, and we ended up with a:
72 nitrous / 36 fuel jet
NGK 8 plug
Pulled 8 degrees timing on pump gas

Not sure how much that helps, but that produced the cleanest plugs for his setup. I'm thinking you need to pull a little more timing.

 

Very cool

 

This might be a dumb question but are the B8EFS that I might end up running they are NOT resistor type plugs right? If so, will that work ok in my LS EFI?? With all the computer stuff and all that?

 

Some people say that they have issues with the non-resistor style plugs, but I have never experienced it and have used up to a B9EFS in mine with NO issue whatsoever.

 

i street drive on b9efs and have never had an issue

 

UPDATE!! - I drove it to the track (8 miles) and it was running good, pulled in to pay and it died and running like crap, i thought WTF..... so i pulled the plugs to change over to the B8's to make a pass and all 4 of the plugs on the drivers side where black & sooty I mean really bad! & the other 4 were fine. I drove up to the staging lanes (100 feet) and it was running like crap so i pulled 2 plugs and it was already getting black..... long story short I replace the factory AC Delco O2 sensor on the passenger side & it instantly fixed the problem. I ran 2 N20 passes and it ran back to back fastest passes ever!!! The a/f ratio were 11.4ish on both sides and ended up 10.9ish at the end. Here were 2 of the B8's I pulled out (this were new just before the pass & pulled right after, left plug #7 is on left & right plug 8 - This is 6 degrees out which puts me at 20 degs timing. What you think? Sorry i didn't get the threads cut off these plugs yet







On a different note...... after these 2 passes the car started acting like crap again, surging, not wanting to idle, & not happy on the N20. On motor the a/f gauge is reading 9.6 on driver's side & 12.9 on passenger side so I'm assuming I burnt up the new O2 again? Why all of the sudden I'm burning these up? The only thing i can thing of is I'm running 50-75% of the Sunoco 110 (leaded) fuel with my normal 93 pump gas. I've read that fuel will burn up O2's, is that true??? -- Can I run the 175 shot on 93 octane pump gas???

 

My .02 the lighting really is not the greatest so to me its hard to see everything, but I will say that your plugs could be cleaned up a little (fuel) and you likely have a little to much timing in it. You really do need to cut one open. But personally i dont think your to far off.

Edit: I just read something that confused me, did you drive on these plugs or were they fresh before the pass?

 

Yeah I took these pics at the track & with my cell phone, I drove on them from the pits to burnout box 500' & idled as little as possible maybe 1 min total, I didn't get to shut off at WOT like planned just cuz I wasn't sure how my brakes would work with engine not running, once i had it slowed i shut it down & pulled all the plugs, these 2 were the average "look" of all 8