NITROUS OXIDE ( nos / n2o ) advice forum

hi all
Any fellow members done a install on the mk3 mx5 if not, can you advise the positioning of the jets (please trev) could i do a crossfire install or would the fancy 4 inlet distribution thing be better, i nicked a inlet pic from internet.
thanks
ted

That will need a direct port system Ted with the Crossfires located near to the cylinder head.

Thanks trev
In three weeks i will be having a sports header and hi flow cat fitted plus remap
.. so i will plumb the nitrous line in and dash gauge and get you to fit the rest if that's ok ,oh and the wiring (im hopeless with wires) so see you soon
ted

That's fine Ted and I'll look forward to hearing from you again soon.

oh trev ,spark plug advice please,when i look for ngk for this car they come up iridium thats even before i try and find a colder plug number,so would you be able to sort me the correct plugs when the time comes or tell me the ones to get and i will pop them in the glove box ...
thanks
ted

There seems to be 2 options suggested;

Option 1; ILTR5A-13G
'I' stands for iridium & 'L' stands for extra long
You need the extra long option so if you ask them for LTR6A-13G, they MIGHT have a standard type that's suitable

Option 2; BKR5E-11
These are a standard type (rather than iridium) and I believe they have a longer than normal thread but I'm not sure if they are as long as the first option, although I would expect them to be, as they have to fit in the same heads.
With these you'd need a BKR6E-11

Thanks trev
ive looked on mx5 parts website they list the plugs BUT they dont say there for mk3 which mine is...
Sparkplug Set, NGK BKR6E-11, MX5 Mk1/2/2.5

should i let you get the correct ones, im so new to spark plugs as you know...

LOL - by all means you can leave it to me Ted.

Thats a relief

Hi trev
going to order the barbed fuel T piece tomorrow,can you tell me is there any particular best place to fit on the fuel line....cheers

Trev i got my header and remap today so i will be seeing you soon, i didn't get any negative response when i mentioned to the re mapper about it getting nitrous ,but he did say because the inlet manifold is plastic,that on there race cars they put a metal plate were a breather is because of back pressure, (i saw the plate forgive me if i haven't described it properly), oh and while am on he tried to be helpful with a plug number NGK ILTR6A-8G and yes he said it was iridium
feel free to say if its all bollocks

Ok for people that may be interested in this thread i spoke with Dave today from WON, like me he couldn't find any worthwhile info to do with nitrous and the nc mx5... inlet manifold in particular is a bit of a monstrosity and talking with autotronix a real pig to remove too,for his race car theirs a bespoke alloy one ready to fit and ive said i would like the next one please so watch this space...
ted

I'm starting to research a bit.. i can now see why Trev told me the nitrous has to be direct port,these fancy inlet manifolds modern cars not as simple as the old days..

I found out today that the bespoke alloy inlet manifold is going to be a long way off,so me being the most impatient man i know decided to purchase a spare manifold and straight up to WON for the crossfires to be fitted........thanks dave

Very true Ted.

Sorted.

im not going to lie...this inlet manifold was one little bastard to remove and fit, BUT bring on the nitrous i say woooooooooo hooooooooooooo see you soon trev and team

Looking good.

hi trev
best take off position for fuel T piece white or red
thanks
ted

Red looks best to me and we now have the nuts in stock.

Thanks trev
have just ordered some more bits and a used distribution block, saved a few pennies
ted

d.block fitted,off to make some pipes....wish me luck (first timer)

hi all
so many pipes in the way first go at the nitrous lines, equal length and going slightly up stream to manifold...now is this ok because i cant for the life of me come up with anything else

oh i nearly forgot, should i remove the restrictor from the fuel side of the distribution block as i noticed the PDF mentions to make sure the nitrous side has one....