Built 420a + Turbo + N2O?

[shaneyeend]

I have a completely built engine, nothing factory has been left standing. I put a fatty T3/T4OE turbo on there and am running 25psi at the track. I was wondering what you think the maximum N2O shot it could handle was? I'm thinking its not a lot so i believe the single nozzel will work well.

 

[DSMJim]

Your pretty well correct there. A single nossle kit will work very well for your application. YOu won't have to spray much to get huge HP gains because it acts like a chemical intercooler. A 50hp shot will give you 50whp from the nitrous plus 50hp from the cooling effect it has on the compressed air. A 100hp increase is a lot from a small shot like that and you should satisfy you need to extra power for a little why anyway.

Your air fuel ratio should run richer with nitrous and turbo. If your hitting 12:1 with turbo now, you should be in the low 11:1 catergory when the nitrous comes on so make sure to fatten the bi*** up at the track.

 

[shaneyeend]

your talking 12:1 with like the FMU right? I'm running the hahn portfueler with AFPR at 1:1, What kind of static pressure u think i'll need when the N2O comes on?

 

[DSMJim]

your talking 12:1 with like the FMU right? I'm running the hahn portfueler with AFPR at 1:1, What kind of static pressure u think i'll need when the N2O comes on?

No I'm talking air fuel ratio, not your FMU vac boost ratio. Your air fuel ratio with turbo is 12:1 (Meaning parts of air to fuel) and with turbo its richer at 11:1.

If your using a port fueler with a normal reg a 1:1 then your fuel pressure will be base + whatever boost your running. So 40 + 10psi so 50psi at boost, which will be fine for spraying. Just make sure you get the kit setup properly so your air fuel is correct. If you don't have a wideband make sure you buy one espically on turbo/ nitrous cars it's pretty critical.

 

[shaneyeend]

sweet thx, i also wanted to know if you thought 50 was the max the engine could handle, or could i go for 75 or maybe 100? oh yeah and with the wide band, where can i get one for the 420a?

 

[98spyderboost]

I didn't think a wideband had to be for a specific motor... I may be wrong