Nos > Safe?

22nd September 2009, 14:42

Basicaly think im going to book my car in for nos to be fitted its a wet kit, but want to know is it safe to run a small jet on standard internals?

If i keep the car looked after and only use the nos for 1/4ing will it be fine to use?

any chance off melting rings ect?

22nd September 2009, 14:58

25 jet is safe some are also on 50 without a controller but that's a fair bit of stress to put on the engine.

Have the switch to make the kit live on the dashboard, and the switch to activate the nitrous solenoids under the acceleration pedal to make sure it activates/deactivates at a safe time.

Nitrous isn't flammable its an oxidiser so it just allows more fuel to be burnt for the amount of air in the cylinder. So heat wise its just the same as an engine with the same BHP you produce whilst on the nos.

22nd September 2009, 15:15

sweet, will be running a controller and a switch as they come with the kit im pretty sure,

Cheers, hehe cant wait

22nd September 2009, 15:33

But I would do yourself a favor and get a bigger/better raidiator fan as my friend worked oiut the hard way lol

22nd September 2009, 15:40

Sort of off topic, but dont forget you will have to use the highest octane fuel possible from what i have read aswell

22nd September 2009, 15:56

Yeh all of the above

Id get a wizards of nos kit. Have a look on my thread for ideas on the install. Id say 50 is your limit on a VTR. This is for the fact that the pistons are not very strong Ive been told, something to do with having 'wet liners'.

My setup (when finished on VTS engine) should be

11lb bottle
Automatic bottle heater
Wizards of Nos Sb150i Kit
Minimax Progressive controller
Jets: 50bhp fixed hit or progressive or maybe 75bhp progressive
Auto meter nitrous and fuel pressure gauges (mounted on A-Pillar)
Nissens VTS Rad
VTS Rad fans
Mocal Thermostatic oil cooler.

£$£$£$£$£$£$£$£$$£

22nd September 2009, 16:01

Quote:

Originally Posted by DusheR

Yeh all of the above

Id get a wizards of nos kit. Have a look on my thread for ideas on the install. Id say 50 is your limit on a VTR. This is for the fact that the pistons are not very strong Ive been told, something to do with having 'wet liners'.

My setup (when finished on VTS engine) should be

11lb bottle
Automatic bottle heater
Wizards of Nos Sb150i Kit
Minimax Progressive controller
Jets: 50bhp fixed hit or progressive or maybe 75bhp progressive
Auto meter nitrous and fuel pressure gauges (mounted on A-Pillar)
Nissens VTS Rad
VTS Rad fans
Mocal Thermostatic oil cooler.

£$£$£$£$£$£$£$£$$£

Does it throw you back in your seat? lol

22nd September 2009, 16:08

Not at the minute, as my bottles empty haha. Its harder than I thought to setup, need to keep bottle pressure correct, fuel pressure comes into it aswell but hopefully at the small jet sizes I shouldnt need to upgrade my fuel pump.

Then once you have this done you do a static test. Then with the results you can change jet sizes to get the optimum power. But if you use it again in at a different temperature the bottle pressure etc will change, so will the resulting power. Might go too lean then BANG, woopsy.

Thats why Ive got a bottle heater, then you know that the nitrous pressure is a constant, save you changing jet with the weather.

22nd September 2009, 16:08

You can fit the kit yourself its actually very easy to do. The hardest part is the jetting which i can help anyone with. But generally a jet rated at 25bhp should be 0.60mm and for this jet you'd need a fuel jet of 0.40mm. That size fuel jet will fill a pint up in 260 seconds.

Wire up the solenoids - two wires each.....

You also need to make sure that the hose from the nitrous solenoid is longer than the fuel one by about 3 inch - to make sure the fuel gets there before the nos. Test both solenoids to make sure they work like lightning before plumbing them into the inlet.

Then its just the simple stuff, mount the bottle at the correct angle, fit the nitrous tube to the nitrous solenoid, fit a T-Piece into the fuel hose and connect it up to the fuel solenoid. Wire the solenoids up to the nozzle (in airbox/throttle body)

Then do an idle test to make sure the revs rise steady and then take it for a spin.

EDIT:
Tips

1. - If it runs shit, retard the engine timing.
2. - Its better to overfuel than underfuel.
3. - Use a colder spark plug.
4. - Use new pulseoids specifically for NOS.

22nd September 2009, 16:12

Quote:

Originally Posted by Ste

You can fit the kit yourself its actually very easy to do. The hardest part is the jetting which i can help anyone with. But generally a jet rated at 25bhp should be 0.60mm and for this jet you'd need a fuel jet of 0.40mm. That size fuel jet will fill a pint up in 260 seconds.

Wire up the solenoids - two wires each.....

You also need to make sure that the hose from the nitrous solenoid is longer than the fuel one by about 3 inch - to make sure the fuel gets there before the nos. Test both solenoids to make sure they work like lightning before plumbing them into the inlet.

Then its just the simple stuff, mount the bottle at the correct angle, fit the nitrous tube to the nitrous solenoid, fit a T-Piece into the fuel hose and connect it up to the fuel solenoid. Wire the solenoids up to the nozzle (in airbox/throttle body)

Then do an idle test to make sure the revs rise steady and then take it for a spin.

Makes it sound so easy. haha Ive been told an inch longer for the nitrous will do as its at a higher pressure anyways, mines around 1.5 just to make sure.