To be track legal you have to have a BD tube, but does it have to be a tube? can it be a secured hose that goes down to the floor in the spare tire well so you can use the existing hole?

Has anyone made their own setup?



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2002 Camaro SS #3586 6M Sebring Silver, T-top, Billet Grille, Hurst shifter, !CAGS, Whisper CF Lid, Holly PowerShot filter, Corsa Catback w/full polish tips, 160 Thermo, SLP fan switch, ASR reverser, TA axle cover w/stud kit, MAFT, NX wet kit(150)purge,heater,remote opener, Autometer gages, Hotchkis STB, LCA's, APHR.

Baseline Dyno: 317.9RWHP 335.9RWTQ with MAF ends only: 325.6RWHP 350RWTQ. (Stock)1st 1/4 mile 13.46 @106.9 2.23-60'
new best 13.306 @107.89 2.12 60'
http://community.webshots.com/user/xknightrider
4-sale MAF ends....now using N02 so need to ditch them.

 

As far as I know, that's a completely legal setup. I use a braided stainless line, and I think it's a -8AN connection on the bottle.

Dave

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1997 LPE 383/n2o Camaro Z28 Convertible
12.39@112.2, 1.76 60' (na) 11.27@124.6, 1.76 60' (n2o)
LT1 Diagnostics, New to Nitrous? Northern California Racing Club

 

I've passed tech in a pinch with a piece of hose, clamped down w/ Hose clamp, to the blowoff fitting. The best setup is the 8AN Braided Hose w/ fitting, along with Bulkhead fastened to the floorboard.

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Kurtis Tamez
LT4-396.com
97 Z28 LT4-396
94 Firehawk LT1-396
Team NW F-Body

 

Thanks guys! Would this 8AN braided hose be soemthing one could pick up at Home Depot?? Does the bottle have to be empty to hook this up?

 

I doubt it. Kurtis' first option (piece of hose and a hose clamp) is certainly a Home Depot solution, but braided hose, AN fittings and bulkheads (I didn't do that, but it's a good idea) aren't, at least at my Home Depot. Summit Racing, if you need to mail order, or your local speed shop.

As far as the bottle, it depends. If you already have a blowoff valve on it, then no, you can just attach the hose. But if the bottle doesn't have the valve, then you need to buy a valve and install it with the bottle empty.

Dave

 

LOL, yeah, thats definetly not what I'd recommend for a permanent solution. More like a MacGyver move after the Tech staff at the track tries to rain on your parade.

Dave, I *believe* the Bulkhead is required when using a soft type braided hose, since obviously when pressurized, the hose will actuallyfly around, and go from being routed outside the vehicle to flying around inside.

The Blowdown fittings are not all the same. Most bottles come with just a generic Valve that will release the pressure. You'll probably need to purchase the new 8AN Male Threaded Blowdown fitting. From there its cake with just getting the proper angle of 8AN Fitting, hose etc.

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Kurtis Tamez
LT4-396.com
97 Z28 LT4-396
94 Firehawk LT1-396
Team NW F-Body

 

Thank you...that makes sense!

 

Mine's -8AN also, into a bulkhead fitting in the floor (right next to me , my little passenger! LOL ).

Good luck
Dave Brown

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If a little's good,
More is better,
And too much is just right!!!

 

http://cjcfo.fbody.com/members/injun...s/Bottle01.JPG

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Fred
94 Formula A3: 381/TH400/N2O
Detailed Mod's List
11.513@115.59 on motor; 11.162@127.67, 1.643 60' on a 125-shot. Going with a 275-shot this year

 

I get a 403 permissions violation error on that file, Fred.

Dave

 

I got an error msg too, but I went in manually Nice work, that is the setup I am looking for. Where did you buy all the parts and line?

 

Thanks for the feedback on the link. I'll have to tell Jim Hogan his fbody.com server is acting up again.... . Every once in a while it will tell me I have no permission to access the files....

The shop that does my work makes their own lines. Really keeps it clean and simple. They have done the complete fuel and nitrous systems, tranny cooler lines, oil and nitrous pressure gauge line, etc. with custom lines.

I told them what I wanted the blowdown line to look like, including the bulkhead fitting in the floor of the hatch, and they fit it up just the way I wanted. Not sure why they used red fittings???

I had one NOS 10# bottle that came with my old 5176 kit, and that had a blast cap in an -8AN fitting. I picked up an older bottle from a friend, and the blast cap was in a "diffuser" with no threads, only vent holes to shoot the nitrous in 4 directions so the bottle wouldn't spin around if it was loose. You can buy the correct cap/-8AN fitting from NOS, but of course you need to empty the bottle before you can change it. I think it is part # 16170:

http://www.holley.com/HiOctn/ProdLin...cs/filter1.gif

Fred

[This message has been edited by Injuneer 94FormM6 (edited June 30, 2002).]

 

As far as I can tell, it's just the brand. There seem to be red & blue aluminum anodized aluminum fittings, and then the silver steel ones most commonly used for brake lines. The different companies seem to swap reds/blues between the hose side and the AN side.

Dave

 

Quick question for Fred, I have always wonderd about the angle of the bottle placement and have been told that upside down and straight up are no good, did you have to take out the pick up tube or whatever it is that is inside of the bottle???

 

The bottle is tilted forward.... you just can't see it in the pic... and I have since removed the remote valve and tilted it forward a little more. As I understand it, the concern is uncovering the end of the siphon tube so it is not covered by liquid. And of course, pulling over 1G on a launch, that means the surface of the liquid is going to be pushed backward at 45deg to horizontal. I don't take the bottle past 1/2 full. The last time they dyno'd the car, with the 275 jets, it showed that by the 3rd pass on a bottle, the temp of the liquid was dropping enough by the end of the pass that it was losing 40HP.

I alway thought it should be tilted forward more, but Second Street keeps telling me its fine where it is. I think the twin bottles in their Pro 5.0 Mustang are tilted forward about 45-degrees, but they change them after every pass.

Fred

[This message has been edited by Injuneer 94FormM6 (edited June 30, 2002).]