70ls1chevelle

iTrader: (119)

I am trying to see what everyone is using on a 300 shot its a .099 nitrous jet,have been using a .083 jet 225 shot with BR7EF's gapped at .030,19 degrees of timing.Also my other car has a .093 jet a 275hp shot and I'm using BR7EF at .030,16 degrees of timing. What are you guys running Thanks

70ls1chevelle

iTrader: (119)

This is on the Nova below my post 402ci

blk00ss

iTrader: (66)

I would personally do some 9's and even lower on the timing. What fuel?

NXZ28

iTrader: (45)

I agree on the plug. That is what I ran on a 300 shot gapped around .026"

AJatNitrousOutlet

I would start with the NGK B9EFS gapped at .026 and see how they look after a pull- if they aren't showing any heat try a B8EFS. I would also pull a little more timing to be on the safe side- you can always add it back in if you need to.

NitrousExpress

iTrader: (4)

After reading the post..... based off what you're already running and with the other cars setup you very well might be ok on the B8EFS. If you do go with them i'd gap around 26-28. With that said every car's setup is going to different and some surprise you with the plugs that they can get away with. I'd really base your plug choice off what you know and what you've been doing.

-Chris

70ls1chevelle

iTrader: (119)

Thanks for the input guys.On this car and setup I'm running 93 octane pump gas,and a standalone with Sunoco 114 octane.Your saying pull more timing I'm running 28 degrees on motor tune do u think 12 degrees is enough to pull for a 300 hit 99 jet ? That would be 16 total timing

On my Chevelle that I have this 93 jet in I'm running 93 octane pump gas 16 degrees of total timing and BR7EF's at .030. Crazy huh

Bowtiedford

iTrader: (9)

I run the 8's at 26 gap on a 150-250 shot I'm at 18* total timing. the 7's I was melting the ground straps.

streetknight2

iTrader: (10)

I used a -9 gapped .028" pulling 14 degrees from initial. That's what mine liked best, but every motor is different. I ran 34 initial with 110 thru motor and 120 in the stand alone.

Petey-Pop-383

I would start at -10s and work back to -9s.
I used -9's on 175hp
anything over that I used -10's

ATVracr

iTrader: (5)

-10's for that fuel.
IMO.

Bowtiedford

iTrader: (9)

Heres an old 8 on 250 and 18 timing and 110 fuel in stand alone. Had 2 others like that. Cleaned it up now. Amazing nothing else happened lol.

Bowtiedford

iTrader: (9)

dang I think I'm going to just post pics on line. I dont need my bi focals and a magnifying glass to see this.

speedtigger

iTrader: (16)

That is one unhappy looking spark plug right there. LOL That is when you know you have not pulled enough timing for your fuel choice.

Bowtiedford

iTrader: (9)

and thats why I went to your rec of that new fuel. Works so much better now lol, I drove it from Clearwater to BMP with my tires in the back seat, and then went my 9:80's and then drove home Getting ready for NMCA true Street

speedtigger

iTrader: (16)

I will be too once my new trans gets here.

Petey-Pop-383

My recommendation was based on using VP C16 fuel.
I don't really understand or see the point in using pump gas then some race fuel in a standalone.
I would want the added insurance to know all fuel going in the motor is sufficient while spraying.
Also seems like adding more pieces to the puzzle that can not work as intended with bad results.
Just my $0.02

Bowtiedford

iTrader: (9)

Pump gas is a lot cheaper in my car to drive around, and O2 sensors have a tendency to go bad when using race gas.

70ls1chevelle

iTrader: (119)

What ???? I have used a BR7EF gapped at .030 with a 275 shot a .093 jet with 16 degrees on 93 octane pump gas only for over 2 years.

shortdog

iTrader: (1)

^Obviously Bowtiedford's car didn't like it. Every car is different.

I wouldn't chance running that hot of a plug on a .093 jet.

My timing is was pulled more than 16* as well.

That's why I've always suggested reading plugs.