Correct NOS kit for 4AFE - Toyota Nation Forum : Toyota Car and Truck Forums

rascal · 12-07-2005, 03:29 AM

Hi guys,

I have a standard 4AFE, and want to use NOS...but which is the right NOS kit to use?

Thanx

***REN69*** · 12-07-2005, 07:34 AM

There's no "correct kit" for the 4AFE, but you could probably use a 50shot.

toyotaspeed90 · 12-07-2005, 11:23 AM

he needs one of the big bottles..... no, better make it 2

Flashmn · 12-07-2005, 11:52 AM

and he needs them by tonight!

Remember not to blow the welds on the intake!

aaron7 · 12-07-2005, 01:44 PM

hahaha

Seriously, why do you want nitrous? All it's going to do is melt your engine.

BTW, NOS is a brand... so saying "I want NOS" is like saying "I want Enkei"...

94_Rolla_Guy · 12-07-2005, 02:02 PM

if you have any question as to condition of the engine don't you'll kill it. I think id only put a 50 shot through a almost new or rebuilt engine im thinking more 30-35shot as for brand i think the best kit may be a Zex kit. take a look at there website and see if they have an application

aaron7 · 12-07-2005, 02:10 PM

You could do a cheater NOS kit, 10-15hp. That's as much as I'd throw at a non-new non-built for it engine.

toyotaspeed90 · 12-07-2005, 08:39 PM

um, it all depends on how well you manage your fuel

aaron7 · 12-07-2005, 10:40 PM

Not really, nitrous displaces oil. Any way you cut it, you are lowering the viscosity of the lube.

toyotaspeed90 · 12-07-2005, 10:42 PM

displaces OIL??? um, a dry shot is put in through the intake, a wet shot is put in through the fuel

if anything, it displaces air volume

toyrolla · 12-08-2005, 02:21 AM

Quote:

Originally Posted by rascal

Hi guys,

I have a standard 4AFE, and want to use NOS...but which is the right NOS kit to use?

Thanx

None of them...

A stock 4AFE is not built to withstand nitrous for long, even a 50 shot.

A 10-15 or even a 30 shot is a waste of time and money.

Rebuild your bottom end and get some headwork done before you step in that direction.

Flashmn · 12-08-2005, 08:39 AM

Quote:

displaces OIL??? um, a dry shot is put in through the intake, a wet shot is put in through the fue

Let me clarify a bit. Dry shot is put through the intake duct "dry", with the extra fuel needed sprayed using the injectors (upping the pressure for example).
Wet shot, is sprayed throught the nozzle with the added fuel, so that they mix before exiting the nozzle. However I've also seen setups using different set of nozzles for fuel and air, where they mix in the intake ducting as they both are a fine mist/gas, which is also a wet shot.

toyotaspeed90 · 12-08-2005, 03:25 PM

i was being generalistic :-p

just saying it doesn't displace oil

Flashmn · 12-08-2005, 03:47 PM

Yeah and you dont put it in with the oil system either.

aaron7 · 12-08-2005, 03:47 PM

Well, what I meant was nitrous oxide that gets in your oil combines with water and form nitric acid, eventually overwhelming the additives in the oil. Then the nitric acid begins to etch the bearing surfaces, making them wear much more than normal till you change your oil. This is why you don't use nitrous on a motor that isn't quite new or built for NOX.

EDIT: This blurb from a site sums up NOX better than I did.

Quote:

Nitrous Oxide is a liquid containing two parts nitrogen and one part oxygen. It is the oxygen in Nitrous that we are after. The oxygen is released from the nitrogen when it is heated, and turns from a liquid to a gas. In a properly designed Nitrous system, additional fuel is added to make use of all the additional oxygen. This is where the additional power comes from. This is also where the additional risk comes from. If the correct amount of additional fuel is not added, the motor will lean out and start to melt parts.