IVE BEEN STUCK ON A 55-65 SHOT FOR SOME TIME NOW. HAS ANYONE BROKE THIS BARRIER

 

contact Charles R. Hill (Ray) he's a Nitrous wizard...

 

Easy_E1 has a 75 shot.
Proceed with Caution my young Padawan...

 

Caution indeed....

I think he is on intake manifold #4!



Charles Hill is working on some of this issues they've identified with running larger shots: Here's a recent thread.... https://www.rx8club.com/rx-8-multimedia-photo-gallery-6/blew-up-another-manifold-165813/

 

turbos are pushing over 300whp nitrous 55-65 shot .....Charles get on this please

 

I'm sure Ray will get right on it.

 

They are working on it. EasyE1 mentioned that him and MazdaManiac are attempting to tune around the nitrous.

 

I would think the problem has to do with engine displacement. To us, a turbocharged RX8 reaching 400 rwhp is astonishing. But think about it. 400 whp isn't that much. In our tiny cars it is, but an engine producing ~500 bhp isn't that amazing these days. There are factory cars that run this much power under warranty. You're asking a 1.3L to gulp down a 120 shot?

 

remember its a lot easier for a 5.7l or a 6.0l engine to absorb a 150shot of nitrous than it is a for a tiny little 1.3l.

 

Subscribing, I am interested

 

We at BHR are working on getting a larger shot to work with the car. But at this time it's "baby steps"
I don't have an extra engine to donate to the cause. Manifolds are expensive enough.
When we can get the system reliable and safe, believe me you all will know about it.

In the mean time if anybody wants to go and try a bigger shot on their own ,,,, be my guest.

 

its not so much the engine displacement as it is the manifold. it seems that larger shots will backfire and ruin the manifold before you even pump enough to hurt the actuall engine.

the UMI is so complicated with all the different runners and valve systems there are lots of places for fuel and nitrous to get "lost" on the way to the chamber. make backfires easy

if i had a million dollars i would mess with direct port nitrous systems, with the nozzels tapped right by the intake ports, but i dont so i will have to wait and see what BHR solution to the problem is.

 

Yep.

 

This speaks a lot to some of the challanges that the RX8 faces regarding a larger nitrous shot.

I agree that we have no idea what the limitations are regarding nitrous shot size are with the RX8. We know that much of the solution lies with altering the ignition and as CRH stated, it's something we're very aware of and have a plan of action on how to tackle it.

The challanges with Nitrous are the fact that you're not always dealing with a steady flow of gas, the fuel/nitrous controller is independent of the PCM and also the issues with liquid vs. air flowing through the intake.

Easy_E has been running a 75 shot with success however its been the product of multiple hours of street tuning and small steps. Right now it's not something that could be tackled with 2 or 3 calibration adjustments.

I'm looking into a Nitrous installation here within the next few months as well so we'll have yet another car to experiment with.

 

So now would be a good time for me to gain a monopoly on UIMs!!! Has Easy blown all 3 manifolds on a 75 shot? Scary...

 

Alot of him blowing nitrous has to do with him being an automatic and not being able to controll the revs like a manual could.

 

Nope I am on my third manifold. The first was a 65 shot. The second was a 75 shot.

Yep.

 

I see. Didn't realize you hat an A/T. that DOES explain a lot. That's some damned determination you BHR guys have!

 

150 Shot?!? I need to lie down...

 

you'll be laying down a while.

:P

just remember we dont have a lot of data on this. bhr is probably the only company doing r&d on nitrous with rx8s.

 

if you guys can get the maps and parts ready to handle a 100 shot on the 4 port At by jan of next year ill be the first to buy promise .

 

Too bad the Nitrous injection can't replace the "P-1" fuel injectors.....

 

i know turbos are more popular but hopefully the nitrous game will become as popular....and yes money talks......one more ? the A/P works well with nitrous?

 

http://www.youtube.com/watch?v=io5zu...e=channel_page

my 8

 

Thanks