vh45 s14 dyno

[gs14racer]

a little disappointed

[ShionS14]

well considering the stock q45 made only 278 hp at the flywheel, i would say that is pretty good. now you can look into an ecu tune and maybe some cams.

[elwesso]

275 WHP assuming 20% drivetrain loss. Over call it 325HP, pretty good considering its a stock motor with just a MT and headers...

of course, we all know that the stock VH45s didnt put out the mere 278HP, more like 300 stock.

[Mettler]

Nice, now with a badass tune to lean that fuel mixture out a bit (the majority of the rev range under high load appears to be at 10:1 A/R), and advance that timing, and no reason why you can't easily get over 300whp. Then just slap in some cams and prepare to be blown away!

[gs14racer]

the richest it recorded was 12.2 via tail pipe probe

[gs14racer]

plus it was 103 degrees in the dyno bay

[Mettler]

Interesting that the measured results from your exhaust don't match up with what the ECU has in the maps (which is what I was referring to, not your dyno A/R results), unless I'm missing something here?

[Florida240sx]

Like the torque What you have done to yours? What was compression on it?

[hannibal]

250 lb-ft at 2500 rpm?? Not bad!!

saw your second youtube vid. Love the sound!

[gs14racer]

all it has is intake headers and exhaust.

hopefully ill be able to pick up the nico ecu soon and go back to the dyno on a hopefully cooler day.

[ShionS14]

any chance we could get some more video?

[gs14racer]

soon as i dont have a camera i have to borrow one.

[CleanSfourteen]

275 WHP assuming 20% drivetrain loss. Over call it 325HP, pretty good considering its a stock motor with just a MT and headers...

of course, we all know that the stock VH45s didnt put out the mere 278HP, more like 300 stock.

I agree, I think you're seeing pretty predictable numbers. And it must be fun to drive, it sure looks/sounds cool. You know it's not a KA or SR when you hear it

[Florida240sx]

What year is that motor?You replace anything on the engine? Timing chains, guides, water pump... How much it cost?

[David Steele]

275 WHP assuming 20% drivetrain loss. Over call it 325HP, pretty good considering its a stock motor with just a MT and headers...

of course, we all know that the stock VH45s didnt put out the mere 278HP, more like 300 stock.

I only go by what comes out at the wheels. Not assuming losses.

[Mettler]

I only go by what comes out at the wheels. Not assuming losses.

That's all well and good but a simple difference like final drive ratio can change results, that's why it's therefore more intelligent to go by flywheel HP outputs, because then you actually analyse what type of power & torque the engine itself is putting out.

[sijoko]

I would say that 275 rwhp is great for a VH45 that has not been tuned for max power. There is still a lot more to be had with some tweaking. The pull of the VH45 in my Q is awesome. I can only imagine how nice it is to have the same power minus 800-1000 lbs. Great job, bro.

So, when are you going to boost it? Every psi will give you approx. 20 hp with a properly designed system.

[trix]

That's all well and good but a simple difference like final drive ratio can change results, that's why it's therefore more intelligent to go by flywheel HP outputs, because then you actually analyse what type of power & torque the engine itself is putting out.

The final drive ratio has got nothing to do with the measured power output. As the power output is calculated from the tourque relative to the revolutions on a driveshaft/wheel.. Change the drive ratio, and the torque and revs. changes. Less rev = more torque. Or the other way around. The amount of power, hp or watt, is equal. If i'm not reading the laws of physics wrong that is.

[Mettler]

It doesn't really matter. You could put two identical engines in vastly different cars and get totally different readings at the wheels for each car, despite the engines producing the same results as each other if set up on an engine dyno.

[Reno]

dual t28's @ 15 psi? :P 9:0:1 compression?

/ ThreadJack

[Florida240sx]

dual t28's @ 15 psi? :P 9:0:1 compression?

/ ThreadJack

Dual t3/4's

[Reno]

hmmm sounds alot better hey you gonna do the VH Swap??

i just got a new job and im gonna save for the VH xD just wonder where can i get 1

[David Steele]

That's all well and good but a simple difference like final drive ratio can change results, that's why it's therefore more intelligent to go by flywheel HP outputs, because then you actually analyse what type of power & torque the engine itself is putting out.

Like I said I only go by what comes out at the wheel.

[ScottJackson]

I don't go by wheel or flywheel hp so much as mph in the 1/4. A loose torque converter WILL throw off dyno numbers a bunch but that won't be reflected in track ETs.

[David Steele]

A loose torque converter WILL throw off dyno numbers a bunch but that won't be reflected in track ETs.

Then fix your loose torque converter?

[ScottJackson]

ha ha! Of course I mean a higher stall converter. Any torque converter will affect wheel horsepower numbers but a high stall one will affect it more. A lot of people think this drop in rwhp numbers means the auto trans is "soaking up" a lot of power, when it's actually just the dyno reading higher engine rpms than what's being transmitted to the transmission itself. The acceleration of the car is what matters and this lower rwhp number from the dyno doesn't directly correlate to lower trap speeds.

[autoworkz]

well, these "ARE" DYNOJET numbers (also known as a random number generator) considering that dynojets read anywhere from 10-15 percent high, I think you are about right on. We got 257rwhp with no exhaust and like 270 something tq, but we had also played with the tune a little , got the nast dips out of the top of the graph. we actually had 225 ft/lbs tq at 800 rpm. cooky motor