NITROUS OXIDE ( nos / n2o ) advice forum

Hi Kyle,

Its not a matter of "better" it's just an alternative which is just as good and which lends itself to an easier install in this particular case. Contrary to what other companies would have you believe (to help them sell their nozzles and therefore their kits), up to certain power limits the position of the injection points relative to each other is not that important, because the natural effect of a nitrous plume is to pull fuel and air in to it, even from a relatively long distance away.
Up to certain power levels, as long as the fuel, nitrous and air all mix together (which is unavoidable, especially during the closed valve period), the combustion process will be no different regardless of the location of the fuel injection point.
Above a certain level it's a different matter but as 99.99% of people will never reach that point, its not a major concern at present.
WHAT DOES MATTER for optimum efficiency (which in turn leads to optimum performance), is the location of the nitrous injection point and the avoidance of abrupt changes in the nitrous flow path, as can be appreciated in ALL the above system designs.
This is ABSOLUTE REVERSE of the case with 99% of nozzle designs used by other companies, in line with their basic ignorance of the importance of a smooth nitrous flow path through the entire system.

cool, cheers trev

Here's a real world pic of an earlier Pro Series CAD representation for a 6 cylinder Jag.

that is sweet looking

I thought you BMW guys would 'particularly' like this Jaguar Pro System as it's a 6 cylinder engine layout.

Adrian, we now have a local Skyline customer (approx. 700 hp) wanting a Pro-Series system for his car but he has a cast plenum, so it doesn't lend itself quite as much to the discharge tubes and we may have to use Venom injectors on that one instead.

Wow thats all nice but I want to know where my CAD drawing is. The only drawing i have is with my crayons and doesnt make for good postings... I guess i need to call David and and see if i am worthy...

I saw a pic on this thread with a womans hair scrunchy next to a manifold on the floor and i wanted to know if that would aid in the BHP figure because i would use one if they would help...

You're too smart to need a CAD drawing from Dave to guide you, as you create your own designs (with a little help from your "friends") but if you'd like one doing I'll see if Dave can find time to work that in to his job list.

You know I have to have fun with you and bust your balls.. ....My crayons work fine sir..lolol Like i said just like to have fun with everyone..I know you get enough ball busting without me having a wack at them ....

You'll have to do better than that to bust my balls Johnny.

i have a question

looking at the cad drawings and the instal on the engin the nitrous flow has quite a few right angle bends i can see why it has these , my understanding is that nitrous hitting a bend is not best and then ya need a certain length of pipe for it to recover , in the above pro systems is this not so much of a problem due to the very big shot of nitrous you are flowing or is it less of a problem after it exits the pulsiods

Trev will be posting pics of are manifold and i flowed it as is and with out the 90 out of the Pulsoids and there was no flow change to speak of at all.The fact that the flow to the Pulsoid is flowed to the best possable way without any hard interutions I belive helps the flow exiting the Pulsoids also.Having 8 also calms this down alot too....

Thanks , interesting about the 8 pulsiods thats was going to be my next question :-)

Trev cheers i did notice shape of bends and understand about install limitations

LOL can ya tell im bored

Here is a pic to give you some idea of what I am doing, now this was last year and some things have changed but you get the idea..

says my file was to large sorry...

if you upload pic to somthing like http://photobucket.com/ 1st it will rezize it for you and then just use the Img link under pic post that link in thread and pic will appear

I like looking at pics of pro mod installs and how they handle the distrabution of nitrous and fuel and how the constraints of some installs mean chooseing the best set up if not the perfect set up esp on the flow paths in and out of pulsiods

As per the cad drawing of the skyline gtr rb26dett intake manifold design:

It's a fantastic set up, unfortunatly it is only suitable for an rb26 that has had the ITB's removed. As the throttle linkages and brakets would make the center pair of noids and plumbing impossible to mount.

Is there any cad drawings for a ITB rb26 manifold?

Cheers

Justin

The CAD drawings are JUST A GUIDE and the Pulsoids can be mounted in other locations to suit a particular application.

We're going to be EXTREMELY BUSY when we get back to work on Tuesday for at least a month or so but if you send me pics of your manifold/engine bay to trev@noswizard.com I'll try and squeeze in a CAD re-work specifically for it at the earliest opportunity.

That would be brillllllllliant!!!

Thanks Trev

Justin

Just thought I'd add an update to this thread, to say that ALL the cars that are in regular use that have Pro Series systems fitted are doing extremely well.

Also to mention that we're supplying these Pro series systems with one piece stainless steel flared discharge tubes, rather than the 2 piece copper and brass originals.

The straight 6 jag isn't.Martin had terminal engine failure last season.

It wouldn't be in "regular use" then would it!?!?!?!

Unfortunately Martin is always having some major engine failure for one reason or another but as far as I'm aware they've not been due to a nitrous system failure.

Here's the quote from Martin in response to my question about why his engine failed;

"I was using billet ally con rods made locally to me, i suspect rod bolt failure, best thing i learnt about nitrous was to get the best piston rings you can, total seal were absolute rubbish for me, stainless steel made all the difference also long duration cams helped as well"

One point I would like to add you might let Martin know is that Tool Steel is better then stianless...but you have to have a course finsish in the bore for them to seal.....