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Old 01-21-2012, 07:30 PM   #1
63 NS Vette
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Default Pro mod nitrous care, still banging ?

I have always used a bang buttun, but after looking over the data logs and seeing a lean spike for approx .3 seconds I wonder if I am doing anything other than risking launcingh my carb to the moon and starting a big fire.
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Old 01-21-2012, 10:31 PM   #2
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Default Re: Pro mod nitrous care, still banging ?

Uhhh, what are you asking? If you have always done it and haven't launched your carbs & scoop, why are you worrying about it now? Have a bleeder on the regulators? Running real low FP on the tune? Sure your data is right?
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Old 01-21-2012, 10:32 PM   #3
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Default Re: Pro mod nitrous care, still banging ?

I think most will say it really doesn't make any difference one way or the other if everything is configured & working correctly. We have never done it but I've asked plenty of people who have tried both ways and that was the feedback. If it makes you feel better, do it. You will get the lean spike either way. I've had better results without a bleeder but again, depends on who you talk to. I'm just going by the RacePak data on that one.
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Old 01-21-2012, 11:23 PM   #4
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Default Re: Pro mod nitrous care, still banging ?

I used to run a bleeder, don't anymore. 5lbs. of fuel pressure. Just because I have not launched the carb yet don't mean I won't.

I think I will go back to a regular purge and test it against the bang button and if I don't see any advantages to the bang button I will stop using it. I have to admit I will miss the sound the car makes when I bang it with a 42 jet !
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Old 01-22-2012, 01:02 AM   #5
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Default Re: Pro mod nitrous care, still banging ?

I have never seen a scoop get launched because of "bang button". But I have seen plenty including mine FLY when the motor stumbled at launch and back fired!!!!! I have ALWAYS banged mine @idle and NEVER had a problem.
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Old 01-22-2012, 08:22 AM   #6
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Default Re: Pro mod nitrous care, still banging ?

.

Saw some video's of cars & carbs going up with a bang button, personally I stopped years ago after see zero gains.
Now with you tube, no way will I ever purge through the motor.

.
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Old 01-22-2012, 12:26 PM   #7
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Default Re: Pro mod nitrous care, still banging ?

We blew the top off of our manifold last weekend banging our first kit--fuck that shit--we wont be doing that anymore--car sixty foots the same without it-no advantage at all-very lucky we didn't catch the car on fire
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Old 01-23-2012, 09:07 PM   #8
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Default Re: Pro mod nitrous care, still banging ?

When you guys say "bang", are you talking about "testing" the nitrous before a pass after a burnout? If so, I didn't realize people were having trouble doing this. I always heard it got the lines cleared out made sure everything is working correctly.
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Old 01-23-2012, 09:13 PM   #9
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Default Re: Pro mod nitrous care, still banging ?

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Originally Posted by cold69bird View Post
We blew the top off of our manifold last weekend banging our first kit--fuck that shit--we wont be doing that anymore--car sixty foots the same without it-no advantage at all-very lucky we didn't catch the car on fire
You have problems behind or should I say after the "bang button"!
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Old 01-24-2012, 09:41 AM   #10
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Default Re: Pro mod nitrous care, still banging ?

Fulton always told us to do it that way, clean the lines, make sure all kits are hitting, etc.
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Old 01-24-2012, 10:43 AM   #11
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Default Re: Pro mod nitrous care, still banging ?

I watched 2 of the ali baba cars with Speed tech systems blow the hood scopes off at Norwalk last year after the burn out doing this.
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Old 01-24-2012, 11:06 AM   #12
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Default Re: Pro mod nitrous care, still banging ?

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Originally Posted by seanss454 View Post
Fulton always told us to do it that way, clean the lines, make sure all kits are hitting, etc.
Back in the day when we had a Fulton motor he always told us the same thing. Nothing like purging a plate system with a .125 jet in it lol..
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Old 01-24-2012, 02:31 PM   #13
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Default Re: Pro mod nitrous care, still banging ?

Quote:
Originally Posted by BobWatson View Post
You have problems behind or should I say after the "bang button"!
That may be true but all I know is we ran it this past weekend after fixing the manifold and the car runs exactly the same without it, so we have decided to eliminate it for safety reasons
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My Ride:
Little ole small block on 275's
331 cu.in.
pt 98/88
C&S methanol blowthrough carb
Glide & PTC convertor

Gettin there slowly---5.40's @ 135mph in the 1/8th so far
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Old 01-24-2012, 08:23 PM   #14
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Default Re: Pro mod nitrous care, still banging ?

It seems clear that doing it does not improve performance, but i'm with the segment that does it to make sure the system is working properly. I will admit that by doing this I found a problem that would have probably lost me the motor if I had run it. To each his own.
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Old 01-24-2012, 09:03 PM   #15
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Default Re: Pro mod nitrous care, still banging ?

I hear ya, i have always done it too with a cast manifold and one carb--when they pop it isnt that big of a deal usually, Pop a sheet metal intake with splits on top and you tear up several hundred dollars worth of shit and need a new pair of underwear!!!! we might go back to it but i'll leave that up to the owner of the car
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My Ride:
Little ole small block on 275's
331 cu.in.
pt 98/88
C&S methanol blowthrough carb
Glide & PTC convertor

Gettin there slowly---5.40's @ 135mph in the 1/8th so far
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