Has any one tried the hidden nitrous set up ? If so, what are the pro's and con's ? Any tricks involved, or just take your time and have extra tubing ? Thanks for any input.
Pros: Well, its hidden! (for the most part) :grin: Cons: Heat on the plumbing itself (can make for a softer hit due to lag time of getting liquid N20 to the nozzles). Maintenance obviously becomes more of a chore too. Devon
Speedtech makes one called the "Jewelz" system. Takes specials parts but you put solenoids and all underneath.
Personally, I try to get a slow hit on purpose. If I had a race-only car with an optimized suspension, then a super-hard hit would be great; however, since I only have street tires and a street suspension, a hard hit just smokes the tires. So I'd call this one a "pro" instead of a "con"... -Bob C.
I did it on a Pontiac Tri power intake years ago. Worked out very well. I hid alot of the hard lines in wire loom cover or vacuum style hose. The tank was hidden under the back seat. No one ever caught it yet:laugh: Tony
how do you get the lines from outside the intake to under it without anyone knowing about it. i just dont see how you could get the lines in there and still keep crank case air filtered?
http://www.carcraft.com/howto/95718/index1.html Good question...I've not looked closely, but perhaps you can get into the lifter valley below the bellhousing flange at the back of the block (it would be easy to get in above). There would have to be enough surface area to use bulkhead fittings to keep everything sealed up nicely either way, and you'd still have to keep the plumbing hidden and clear of the flywheel/flexplate, too. Devon
Nope, it's a plate system, but instead of using it in a plate it can also be installed upside-down from the bottom of the intake manifold. (sorry that the pic is so huge!) -Bob C.
Pontiacs are easier since the intake is raised, and they have a valley pan to seal the crank case. Tony
Wouldnt it be easier to use one of those top shot hidden nitrous systems? The ones you can mount on top of the carb? I believe it was Car Craft that did an article on a 69 or 70 mustang which had that, it looked completely stock from the outside. He had his solenoid inside the air cleaner i believe...
Here are sum real good pics of the setuphttp://impalassforum.com/noncgi/ultimatebb.php?ubb=get_topic;f=17;t=000568
Thanks a lot for all the responses to my question.. I will probably go with the kit from NOS that is jetted for 150 HP. I plan to mount the solenoids low on the fire wall, and hope for a SOOOFT hit. Hope I can put bulkhead fittings in the very back of the intake manifold so they won't show too plainly.
Does it have to be hidden or are you just trying to avoid a plate under the carb? If you are using a Q-Jet, you can run/tap two "Fogger" nozzles in the back of the carb between the upper and lower butterflies. Should be good for all the HP you are looking to spray. EFI guys use a single nozzle for 150HP+ setup when spraying thru the throttle body.
Hmm, that sounds like a good idea....would it be even better if you could get the spray in front of the secondary butterflies? Maybe some long nozzles, or maybe even locate them around to the sides of the carb (but prolly not enough room with the throttle and choke linkages...)
You have to make sure when you order that you specify the low psi jet maps so you can use a carb fuel pump setup. :TU:
