Funny Gas Facts for LTx!

Hello LTx Tech!

I took some time to gather and format some pretty common stuff about nitrous. The idea is to help kick-off the nitrous section of LTxTech with some helpful LTx nitrous detail. Im sure others will add, and please do we can create a master sticky with all the good on nitros setups for our cars.

NX, TNT, Zex Jet Sizes (Wet kits)
Single Nozzle (RWHP Rated)
50HP = 35N 10F
75HP = 41N 22F
100HP = 52N 28F
150HP = 62N 33F

Dual Nozzle (RWHP Rated)
100HP = 35N 22F
150HP = 42N 25F
200HP = 51N 28F
250HP = 55N 31F
300HP = 63N 35F
350HP = 67N 39F

NOS (Wet)
Single Nozzle (RWHP Rated)
75HP = 41N 28F
100HP = 51N 31F
125HP = 55N 35F

NOS (Dry)
75HP = 28N
85HP = 30N
100HP = 32N

Formula for Converting Dual jets into Single:
(.71 x size of one jet) x 2 = single jet size"

Jet Calculator:
http://www.robietherobot.com/NitrousJetCalculator.htm

NX Install Guides:
http://www.nitrousexpress.com/Instructions/main.htm

NX FAQ Link:
http://www.nitrousexpress.com./Pages/faq.htm

nitrous Wiring Diagrams:
http://www.fquick.com/garages/viewgallery.php?carid=3821 (aka Chopstix fquick:-)

LT1 Spark Plug Reference Guide
Stock
Reach - .708”
Seat - Taper
Stock Heat Range: 5
Gap: .050
Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764; Champion RS14YC6 (stock number 13); Denso IT-16 (stock number 5325)

Nitrous (one step colder)
Heat range: 6
Gap: .035 - .038
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (two steps colder)
Heat Range: 7
Gap: Consult
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Autolite AR94; Denso IT22 (stock number 5327)

AFR heads
Seat – Gasket
Stock – MFG Recommendations
Heat Range: 9
Gap: Consult ignition mfg.
Plug: NGK 5672A-9 (stock number 7405); Autolite AR3910; Champion C59YC (stock number 792); Denso IQ27 (stock number 5315); Denso IQ01-27 (stock number 5708)(diagonal platinum ground); Denso IQ02-27 (stock number 5711)(horizontal platinum ground)

Nitrous (one step colder)
Heat Range: 10
Gap: Consult ignition mfg.
Plug: NGK 5672A-10 (stock number 7942); Autolite AR50; Denso IQ31 (stock number 5323)

Nitrous (two steps colder)
Heat Range: 11
Gap: Consult ignition mfg.
Plug: Denso IQ34 (stock number 5324)

Trick Flow & Edelbrock Heads
Seat – Gasket
Stock – MFG Recommendations: approx under 9:1 compression
Heat Range: 4
Gap: Consult ignition mfg.
Plug: NGK FR4 (stock number 5155); NGK BKR5EIX (stock number 6341); Autolite 3926; Champion RC12YC (stock number 71); Denso IK16 (stock number 5303)

MFG Recommendations: approx 10.5:1 compression
Heat Range: 5
Gap: Consult ignition mfg.
Plug: NGK FR5 (stock number 7373); Autolite AR3924 (Racing Plug); Autolite 3924; Champion RC9YC (stock number 2075); Denso K20PR-U (stock number 3145); Denso IK20 (stock number 5304)

MFG Recommendations: approx 11:1 compression
Heat Range: 8
Gap: Consult ignition mfg.
Plug: NGK R5672A-8 (stock number 7173); Autolite AR3911; Champion C63YC (stock number 796); Denso IQ24 (stock number 5314)

MFG Recommendations: approx 12:1 compression
Heat Range: 9
Gap: Consult ignition mfg.
Plug: NGK R5672A-9 (stock number 7405); Autolite AR3910; Champion C61YC (stock number 785); Denso IQ27 (stock number 5315)

MFG Recommendations: approx 13:1 compression
Heat Range: 9 - 10
Gap: Consult ignition mfg.
Plug: NGK R5671A-9 (stock number 5238); Autolite AR3933; Champion C59CX (stock number 296); Denso IK27 (stock number 5312)

MFG Recommendations: approx 14:1 compression
Heat Range: 10
Gap: Consult ignition mfg.
Plug: NGK R5671A-10 (stock number 5820); Autolite AR3932; Champion C57CX (stock number 295); Denso IK-31 (stock number 5321)

looks good.....and I really like those wiring diagrams ;)

One thing I don't understand is why so many people still feel that a projected tip plug like a TR6 is safe for nitrous. I know a lot of people are using them but they must look like a glow plug :shame:

Quote:

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Originally Posted by jakesz28

One thing I don't understand is why so many people still feel that a projected tip plug like a TR6 is safe for nitrous. I know a lot of people are using them but they must look like a glow plug :shame:

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There is a big support for those plugs with a power adder...I still use the stock heat range TR55's (@.035 gap) for the little shot Im running. Seems to work good so far.

What other plugs are good for nitrous?

Nice info, thanks man :)

I was looking to get some thing like that for here. They were writen by others and I had not got approval from the writers ;)

As long as all is in order it will stay stuck :D

I went to my local speed shop and told them I wanted 125 hp jets and they gave my 47F and 67N what kind of hp would that be
NOS plate kit

I'm hooking up the nitrous in my 95 t/a. I have a bottle heater with a pressure switch. My question is right now I have the ground for the heater feeding into the pressure switch and then to gnd. I seen a few different ways on here now they are showing it run through the hot side instead of being a gnd. Is it okay to run it as the ground or should I switch it to the hot side. Its a dynotune nitrous pressure sensor

iv only ever seen it on the hot side

Its not a big deal now since I still have all the wires out getting things connected and waiting for my Ewp and msd box to be refurbished. Figured I would ask now b4 I have it all buttoned up. This is a little different than how I have mine since I'm using the relay for the bottle opener as well I'm just using the gnd straight off the heater instead of cutting the power to the relay. But it's wired on the ground side Attachment 32246 (this is instructions from dynotune) I think