Can Anyone Give Conversions

[STAGE-A]

Hey does anyone know the conversions for like ...

AWKW's vs RWKW's

kws vs BHP

and what kinda figures give what kinda times in the Stags ie XXXkw = 12sec 1/4s etc (i know thats not an exact rule but an idea would be good)

Also ive heard a lot of peeps on here say there aiming for 200awkw's, sounds great but what does it really mean? obviously bigger the numbers more power but in comparison to other cars on the road what would a 200awkw stagea compare to an what kind of times would it be expected to do .

sorry for the hella newbie question but if you dont know u gotta ask

Cheers

Lee

[stagi-r]

multiply your kw's x 1.34 and this will give you hp

[STAGE-A]

cheers mate

[AlexCim]

~750W = 1 hp so isnt it kw = 3/4 * hp

there is no conversion for awkw to rwkw, but there is more loss in the driveline in awd cars (friction, sound etc)

[3intheBack]

Sk has the formula for power to weight ratio equating to terminal velocity and times over the 1/4.

I assuming you know ( but then maybe you dont) that

AWKW means - all wheel kilowatts

RWKW means - rear wheel kilowatts

BHP means - brake horsepower

The difference in the first two is just in the way the dyno measures your power output - ie in 4WD or 2WD.

BHP is generally the power measured at the crank - ie at the flywheel - this is the power figure you would read when you see a picture of an engine on a stand with a big fan for cooling and cherry red exhaust.

A lot of power is lost thru the transmission - upto 30%.

What this means for the humble stagea RB25, that is factory rated at 208 kw (at the flywheel), is that your dyno graph may only read 140kw at the wheels - the loss from 208 to 140 is from the transmission and tyre friction on the dyno rollers.

I've seen a large 4WD (Nissan Patrol) pick up 10kw on the dyno just by changing the tyres from large 4wd style tyres to smaller car tyres. I've also seen old V8 motors pull 20+ kw just from changing the engine oil to synthetic - the equation is simple - the more you reduce friction, the more power that is available to transmit to the road.

A 4WD stagea is going to suffer more power loss in the drivetrain then a 2WD. This is good thing about ATTESSA - it remains a 2WD only until the rears start to slip (I dont have ATTESSA - so someone can correct me if I'm wrong)

So the magic 200 AWKW you see touted on these forums means they are lifting the factory set 208kw to something closer to 300KW, which translates to 200AWKW on the dyno, at the wheels.

I'll leave space for someone else to answer you other questions.

[STAGE-A]

ok... so does that mean the same kws atws in awds compare to rwds would produce less or more overall power or exactly the same

ie 200RWKW is more or less powerful than 200AWKW

eg a 200 rwkw skyline compared to a 200AWKW stagea which would quicker?

I assume that at the flywheel the stagea would have to produce a lot more than the skyline to produce the same WKWs but would that also produce a technically faster vehicle as all the wheels have the power to them or would it simply mean there would be no difference but due to weight the skyline would be quicker?

Sorry just trying to get some good solid basics

[STAGE-A]

Sk has the formula for power to weight ratio equating to terminal velocity and times over the 1/4.

I assuming you know ( but then maybe you dont) that

AWKW means - all wheel kilowatts

RWKW means - rear wheel kilowatts

BHP means - brake horsepower

The difference in the first two is just in the way the dyno measures your power output - ie in 4WD or 2WD.

BHP is generally the power measured at the crank - ie at the flywheel - this is the power figure you would read when you see a picture of an engine on a stand with a big fan for cooling and cherry red exhaust.

A lot of power is lost thru the transmission - upto 30%.

What this means for the humble stagea RB25, that is factory rated at 208 kw (at the flywheel), is that your dyno graph may only read 140kw at the wheels - the loss from 208 to 140 is from the transmission and tyre friction on the dyno rollers.

I've seen a large 4WD (Nissan Patrol) pick up 10kw on the dyno just by changing the tyres from large 4wd style tyres to smaller car tyres. I've also seen old V8 motors pull 20+ kw just from changing the engine oil to synthetic - the equation is simple - the more you reduce friction, the more power that is available to transmit to the road.

A 4WD stagea is going to suffer more power loss in the drivetrain then a 2WD. This is good thing about ATTESSA - it remains a 2WD only until the rears start to slip (I dont have ATTESSA - so someone can correct me if I'm wrong)

So the magic 200 AWKW you see touted on these forums means they are lifting the factory set 208kw to something closer to 300KW, which translates to 200AWKW on the dyno, at the wheels.

I'll leave space for someone else to answer you other questions.

cheers mate u posted while i was posting mine and hadnt had a chance to see it .. some great info thanx!!

[stasis]

Sk has the formula for power to weight ratio equating to terminal velocity and times over the 1/4.

I assuming you know ( but then maybe you dont) that

AWKW means - all wheel kilowatts

RWKW means - rear wheel kilowatts

BHP means - brake horsepower

The difference in the first two is just in the way the dyno measures your power output - ie in 4WD or 2WD.

BHP is generally the power measured at the crank - ie at the flywheel - this is the power figure you would read when you see a picture of an engine on a stand with a big fan for cooling and cherry red exhaust.

A lot of power is lost thru the transmission - upto 30%.

What this means for the humble stagea RB25, that is factory rated at 208 kw (at the flywheel), is that your dyno graph may only read 140kw at the wheels - the loss from 208 to 140 is from the transmission and tyre friction on the dyno rollers.

I've seen a large 4WD (Nissan Patrol) pick up 10kw on the dyno just by changing the tyres from large 4wd style tyres to smaller car tyres. I've also seen old V8 motors pull 20+ kw just from changing the engine oil to synthetic - the equation is simple - the more you reduce friction, the more power that is available to transmit to the road.

A 4WD stagea is going to suffer more power loss in the drivetrain then a 2WD. This is good thing about ATTESSA - it remains a 2WD only until the rears start to slip (I dont have ATTESSA - so someone can correct me if I'm wrong)

So the magic 200 AWKW you see touted on these forums means they are lifting the factory set 208kw to something closer to 300KW, which translates to 200AWKW on the dyno, at the wheels.

I'll leave space for someone else to answer you other questions.

So does that means that if you put engine oil additive (slick 50s or nulon long term engine treatment), Put in diffs and transmission additive(nulon) include the tranfer case I will get increase in Hp? Cos im reducing friction from engine, gearbos diffs and tranfer case.

[AlexCim]

ok... so does that mean the same kws atws in awds compare to rwds would produce less or more overall power or exactly the same

ie 200RWKW is more or less powerful than 200AWKW

eg a 200 rwkw skyline compared to a 200AWKW stagea which would quicker?

I assume that at the flywheel the stagea would have to produce a lot more than the skyline to produce the same WKWs but would that also produce a technically faster vehicle as all the wheels have the power to them or would it simply mean there would be no difference but due to weight the skyline would be quicker?

Sorry just trying to get some good solid basics

Power is not everything when it comes to a fast car. You can have a 200rwkw skyline that hits 200 at 7 grand and below that is a pig (just assume a laggy turbo). Alternativly, you have a stagea that makes 200awkw from 2000-7000rpm and just pulls away.

for arguements sake, id say if the powerbands were identical a 200rwkw skyline would kill a 200awkw stagea 1 because of the weight and 2 because of the aero of the car. As far as i know, rwkw vs awkw doesnt matter as long as both cars have traction.

[3intheBack]

So does that means that if you put engine oil additive (slick 50s or nulon long term engine treatment), Put in diffs and transmission additive(nulon) include the tranfer case I will get increase in Hp? Cos im reducing friction from engine, gearbos diffs and tranfer case.

I'm not getting into that argument or this thread will start to look like it should be in the skyline forum.

Search for "carbibles" on the web and click on 'oil additives' for a good run down on what works and what is hype. At the end of the day a good oil is a good oil is a good oil. But a bad oil is a bad oil and thats what the V8 was running - a basic crude, straight out of the ground.

But hey, if you want to spend the dyno time and money comparing what additives do for your HP figures, then we will read with interest.

AC is right, at the end of the day power is not everything when it comes to making a car fast or enjoyable to drive. It's in the how and when you get that power to the ground.

[stasis]

I'm not getting into that argument or this thread will start to look like it should be in the skyline forum.

Search for "carbibles" on the web and click on 'oil additives' for a good run down on what works and what is hype. At the end of the day a good oil is a good oil is a good oil. But a bad oil is a bad oil and thats what the V8 was running - a basic crude, straight out of the ground.

But hey, if you want to spend the dyno time and money comparing what additives do for your HP figures, then we will read with interest.

AC is right, at the end of the day power is not everything when it comes to making a car fast or enjoyable to drive. It's in the how and when you get that power to the ground.

Yea true like the old perelli tyres slogan in the 90s." Power is nothign witout control"

[GoldZilla]

This is a rough guide only, but:

1kW = 1.34hp

1hp = 0.743kW

Remember:

* when you're reading a new car mag (such as Wheels, Motor, etc.) or looking in a new car brochure, the quoted power figures are at the flywheel.

* when you're reading a performance/modification kind of magazine (HPI, Zoom, FF, etc.) them most of the figures stated are at the wheels, so count on *roughly* 20-30% lower figures compared to flywheel, and this accounts for frictional and other losses.

[3intheBack]

And for those of us reading Japanese mags, what is the conversion to PS?

Isnt it almost 1:1 ??

[GoldZilla]

And for those of us reading Japanese mags, what is the conversion to PS?

Isnt it almost 1:1 ??

Correct, close enough to 1hp = 1PS