OK - this thread may sound stupid, but I want to see if anyone else agrees w/ me or makes me think otherwise.

(If I'm correct) Hal's dyno setup is a T3/T4 @ 12 PSI w/ X amount of nitrous. He has stock internals and stock injectors according to the video. The power generated through the turbo and then the addition of nitrous is a total of 476 HP and 505 TQ.

Now, Jay25 is a T3/T4 @ 9.7 psi with no nitrous generating 325 HP, 310 TQ. Not to compare Jaime's setup to Hal's....but Jaime also has stock internals and injectors (if I'm correct)

and then Bags, T3/T4 @ 8 or 9 PSI? No nitrous and stock internals and injectors.

Now I know the PSI difference btwn 9 and 12 is big difference, but just by thinking of how all the power Hal's car makes is insane. Say that w/out the nitrous on Hals car, he's got 376 HP......and assume it's a 100 shot, I can see how that works, I dont understand how the torque curve works w/ nitrous though.

What I'm really trying to figure out is what else can make THAT much power? Hal hasnt blown his present motor which "blows" my mind cuz Bags had LESS power than that and broke a piston. (Or whatever metal that was)

How is this possible? Is Hal's just a factory freak?

 

You need to take into consideration that a wet N2O kit used on a forced induction engine will make more HP with settings calculated for a N/A engine shot (I.E. a NX kit set for a 50 shot on a N/A car will give you 75 on a F/I car). I don't know the exact math for the equation, but you get the point...

 

I have a T4/T4, hes also injecting fuel thru the nitrous, he was a wet kit. Thats why he can use stock injectors with his setup. Nitrous is a big big Torque gainer!

 

Yea, n20 is also somethin I dont know a lot about.

wet, dry, direct, indirect....gotta learn

 

i think his dyno video looked a little fishy.. or maybe it was because it wasn't the ENTIRE dyno pull but ... i've seen a few Supra and RX-7 dyno's and they had the 300 to 500hp range .... when they spun the rollers ... you could tell they were packin' alot of power.... but when i watch Hal's dyno ..... it doens't look like 400whp to me .................

mayb it's just me?

 

One thing I know for a fact, after discussing my issue with someone and also another person whos pushing more way more power then me is that after a certain PSI from a turbo a JS or something else will be needed therefor you dont damage your engine. After looking at baggs piston. Thats very thin alloy. To me that looked pretty weak. I know it holds alot of power in the upper 300's. I dont know about close to 500. Let alone will the alloy block hold that amount of power/torque etc..?

 

Well it seems to be holding up ok, as I have put a full bottle through my car in the past week alone, and boosting between 8-12psi on and off the spray.. The car is set at the same 476/505 settings right now.

As for actual 500@wheels? I am not sure, I have run more boost than the dyno (10psi) on the streets on occasion, but when I went to try and demolish the 500 mark (was looking for 550whp) - trouble set in the first time I gunned it. A trailor ride home and a day later, I had the car running back on the trouble-free-for-me 476/505 setup. My thoughts are that it was more related to lack of fuel than anything else.

Jay is right, n2o is a big torque gainer, and as everyone knows I use a NX wet setup, which means I can gain that extra power without taxing the injectors more. The fuel pump on the other hand..

As for anyone (tofushop) doubting my dynos, etc - that is fine

 

Whats a JS?



and Hal, I'm not doubting a thing. I just find it odd/amazing your engine is holding up that great. After redmax blew (x) amount of engines.....and then the piston on bags - BOTH with less power.

I just need to read some more I guess.

 

J&S Safeguard, it's an ignition timing device that retards timing when detonation is sensed. Saves the motor from detonation, very useful when running high boost/nitrous.

As for the engine blowing, there are a lot of factors. Cory and Kirk may have had other issues that caused the engines to blow. Maybe something caused them to run lean for that fraction of a second, and so on.

 

by JS he was referring to a J&S Safeguard unit. It is individual cylinder retard to prevent knock while allowing max safe ignition. A good unit to have, and something I wish I did

and bijan, yeah I wonder myself sometimes - I am shocked at what a stock VQ30 will hold. as I go to a larger turbo now in attempts to make significantly higher numbers, it will be interesting to see what happens

 

You can't tell just by looking...that's like comparing the butt dyno to the real thing

 

Hal is running pig rich...10:1 i think it is That takes alot out of the tuning headaches i would imagine. I personally think this is the only reason detonation hasn't destroyed his motor with the stock compression and ignition timing.

 

How is he getting that much fuel from the stock injectors?

 

hes not, the extra fuel hes getting is from the fuel solenoid that comes with the Nitrous setup. Thats how hes getting extra fuel. I dont know if hes tunning that mixture to be very very rich on the fuel side. Say 20 parts fuel/10parts nitrous something like that. 20fuel/10Nitrous

 

He's not...notice JAY25's post about additional fuel coming from his wet nitrous setup. It's like having extra injectors in the intake manifold. Not nearly as accurate or well atomized though.

 

according to your part/part analogy, I am running 10fuel/11nitrous. I am running .01 larger nitrous jet than is recommended on their NA settings. I run high fuel pressure on the injectors, but they still start to not hang on the top end. I start at 10:1af , and at 5000 it goes to ~11.75:1 and at the very top of the revs it leans out more.

Simply put:
the injectors are supplying fuel for the turbo air (high fuel pressure)
the nitrous setup takes care of the fuel for the nitrous (wet setup, love them)

I am not using nitrous fuel jets as a fix for injectors, bc I daily drive this car and I couldn't afford to refill the bottle constantly if I needed it whenever I boosted around everyday

 

Also, a dyno is very easy on the motor. There's much less load on a dyno than there is while actually driving/racing. It's why there are so many Supra dyno queens. A lot of those guys with 8-900 whp on stock internals wouldn't dare drive their cars hard or race them much. It would pop the motor very, very quickly. But it's perfectly safe to do on a dyno when the load/conditions are stable. The A/F on a dyno will usually read a little lower than it would on the street. Say his A/F is tuned to 10:1 on the dyno, on the street, it may actually be closer to 10.5:1.

 

8-900 WHP on stock internals??

 

only when you are boosting. I dont know much about Nitrous but was close or somewhat have and understanding.

 

 

the record for a stock internal supra actually is in the upper 900rwhp range.

 

Yeah, I think it's like 960's or 980's, I'm not positive. And supposedly that was with boost controller issues so he was running 4 psi less than he wanted to.