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 Post subject: Re: GodsRods Duster II
PostPosted: Fri Aug 31, 2018 10:11 pm 
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That’s what is recommended. Nitrous Express calls for 8 psi. I’ve got the Regulator set probably too low for the Holley at 3.

I think I should run a T into two regulators rather than trying to run them in tandem with the first one at 8 and then stepping down to whatever lower setting for the carb.

What is the recommended setting for Holleys...?

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 Post subject: Re: GodsRods Duster II
PostPosted: Sat Sep 01, 2018 12:35 am 
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With standard needles Holleys usually want 5 to 7 psi.

I would Y or T the line to seapate regulators, it will be less hassle in the end.

8 seems high to me. My Top Gun and NOS systems ran at 5. However, always read and follow all label directions. At 8 psi they must be using a lot of nitrous to keep it from going fuel rich.

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 Post subject: Re: GodsRods Duster II
PostPosted: Sat Sep 01, 2018 5:24 am 
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Rob the pass I made on the nitrous express I raised the pressure to 8.5 and had no popping or lean problems. May try 9.0 next pass. The plugs all looked good just a light tan color. But remember I don’t know much about tuning.


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 Post subject: Re: GodsRods Duster II
PostPosted: Sat Sep 01, 2018 8:37 am 
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You probably know more than I do Norm. Are you planning to run nitrous at Clay City and have you weighed the Dart yet? I’m thrashing on my stuff ‘cuz I’m scared you’re gonna whoop up on that B/Nitrous record. :shock: :D

Are you just running one fuel regulator for both carb and nitrous?

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 Post subject: Re: GodsRods Duster II
PostPosted: Sat Sep 01, 2018 9:38 am 
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Be careful adding fuel, especially if you don't know what your nitrous pressure is. 10* on the bottle will change pressure quite a bit, and 100# of nitrous pressure will change your tune-up a lot. Fuel rich will break just as many parts as fuel lean.

One other little thing I learned the hard way, do not snap the throttle shut at the top end, ease up and drive it out after the system shuts off. Snapping it shut (like most bracket racers do) allows fuel to puddle in the top ring lands and possibly ignite. That breaks the land and things go downhill from there.

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 Post subject: Re: GodsRods Duster II
PostPosted: Sat Sep 01, 2018 4:37 pm 
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Haven’t weighed it yet and probably want run nitrous for 1/4 mile run but may on 1/8. I think Ron told me the car weighed 2450 with out him in it. My fat but weighs 256 which will put it barely over 2700 lbs. Don’t know where I can weigh it but will try to find a place or track.


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 Post subject: Re: GodsRods Duster II
PostPosted: Sat Sep 01, 2018 5:11 pm 
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slantzilla wrote:
Be careful adding fuel, especially if you don't know what your nitrous pressure is. 10* on the bottle will change pressure quite a bit, and 100# of nitrous pressure will change your tune-up a lot. Fuel rich will break just as many parts as fuel lean.

One other little thing I learned the hard way, do not snap the throttle shut at the top end, ease up and drive it out after the system shuts off. Snapping it shut (like most bracket racers do) allows fuel to puddle in the top ring lands and possibly ignite. That breaks the land and things go downhill from there.


Good advice yet again from Big D! :D :D :D


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 Post subject: Re: GodsRods Duster II
PostPosted: Sun Sep 02, 2018 8:58 am 
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Norm, I can bring my scales.

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 Post subject: Re: GodsRods Duster II
PostPosted: Sun Sep 02, 2018 9:21 am 
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Dart270 wrote:
Norm, I can bring my scales.

Lou


Could you please bring them. That will save me a hassle getting my car weighed, if I get it running good enough to set a record. Thanks.

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 Post subject: Re: GodsRods Duster II
PostPosted: Sun Sep 02, 2018 10:30 am 
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That would be great Lou if you don’t mind. I don’t think Mountain Park has scales and I probably want have time this week to have it weighed.


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 Post subject: Re: GodsRods Duster II
PostPosted: Mon Sep 03, 2018 2:37 am 
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Hey Guys,

Happy to do that. They are sitting in my pile of stuff to bring...

See you all soon!

Lou

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 Post subject: Re: GodsRods Duster II
PostPosted: Mon Sep 03, 2018 5:07 am 
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Thanks Lou!

I’m not sure I will have all of the AN fittings I need in time. Fingers crossed.

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 Post subject: Re: GodsRods Duster II
PostPosted: Mon Sep 03, 2018 8:37 pm 
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I scraped about 4 lbs of undercoating out of the Duster in my quest to remain in B class with the added nitrous weight.

I got as far as I could with the nitrous install. Hoping the AN fittings get here in time.

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 Post subject: Re: GodsRods Duster II
PostPosted: Tue Sep 04, 2018 4:25 am 
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Best of luck, Rob.

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 Post subject: Re: GodsRods Duster II
PostPosted: Wed Sep 05, 2018 6:04 am 
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I did a little more scraping last night and started buttoning things up. I just called CAM and hopefully the AN fittings will be here today to complete the nitrous install.

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