Carter01

iTrader: (11)

Hey guys, my kit should be finished this week and I will be spraying a 150 hit through a Nitro Dave ls1 specific plate kit. I know the recommended jetting is n62 and f38. I have been told by almost every member I talk to that the 38 will be dead rich. Where should I start and do you have any "real world jetting" for a similar setup as mine with a 150rwhp shot? Car is a cam only 390 rwhp with 255 racetronix and hotwire kit.

I was going to start with a 36 but just wanted to see if someone with a similar setup could get me closer right out the gate. And yes i know every car is different and reacts different, I'm only wanting a starting point that worked good for others.
Thanks,
Andy

speedcrazy2

iTrader: (1)

use what the kit recommends and if it is dead rich then go from there, It works both ways Ive seen some people use the recommended jets in a kit and end up lean


there are too many varaiables in these situations fuel pump,race gas, timing etc. better to be safe then sorry

jman54002

iTrader: (11)

x2 ...I was right on at the stock jetting same fuel system you have. Run it then check plugs then change it.

00MaroonZ28

iTrader: (3)

better to be rich than lean. Like said before, start at the recommended jet and go from there.

Frozen WS6

I'm running a fast 92 w/92 plate and dedicated cell filled with vp109. I had to go down two jet sizes to get my afr to 11.7-11.9. I'm looking for 12.1 so I'm going to try a 3rd jet down, but we'll see how it does.

Try the recommended jets and go from there. Like everyone says better to be safe.

Carter01

iTrader: (11)

Thanks for the replies, I totally understand the differences between cars like I stated in the OP. I guess I'm trying to take a short cut that at this point appears unlikely. I have no problem putting in the wrench time to get it right, it's just that I thought someone with a similar setup might run across this.

Any other view points will be greatly appreciated!
Thanks for the help!

Twotonefreak

iTrader: (11)

Nitrous is something that you do not want to take short cuts with. Study up on how to read the plugs and you'll be fine. FWIW I run a 36F on my 200 shot(72N), but I'm using a Harris Plate.

Carter01

iTrader: (11)

^^^^Agree on the plug reading, I've read hours and hours on reading plugs and tuning with nitrous before installing the kit. Thanks for the advice.

So on a 200 shot your using 2 jet sizes smaller than my recommended 38 for my 150 shot? Looks like plug reading is my starting point, LOL!

06blackGTO

iTrader: (20)

Im pretty sure my hsw wetkit called for a .035 fuel/ .062 N. When I went to the track with my tuner, it was pretty lean, we ended up putting a .038 fuel jet in it, and it helped alot. I guess it depends on the car.

camscam02

iTrader: (21)

50 bucks it's dead rich. Any takers? I bet if tuned right it will be a 34 or so.

And fwiw my jetting is 62 31. Ohhh noes.

ATVracr

iTrader: (5)

I agree with Cam ^.
63/32 for us back in the day.

now its eight 22 jets.

BLK02WS6

iTrader: (2)

I'd start with the 36... make a pass and read the plugs. It'll probably end up with a 34, maybe even a 32...

Carter01

iTrader: (11)

31, what? I know your car is flying! I just hope I can get it tuned up right in order to do the same. A 10.xx anything right now would be great

Carter01

iTrader: (11)

ATV, I see where you post alot about reading plugs. My question is this, so if I'm looking for a full turn of soot on the threads how will I know how rich is too rich. Ex. If the soot travels greater than a full turn? Just trying to simplify the plug reading as much as possible.

Carter01

iTrader: (11)

This is what I thought also. You have a PM

Twotonefreak

iTrader: (11)

I'd be betting that your right

ATVracr

iTrader: (5)

You have to look at the porcelian (sp) also for the fueling,
you want about 1/8th-1/16th inch line at bottom of it.

Carter01

iTrader: (11)

Thanks for clearing that up!

brokenfly

70 33 here at 26 degrees...

BLK02WS6

iTrader: (2)

Way too much timing...