Just looking at an NSX on e-bay apparently 270 BHP and 0-60 in 5.7 seconds,is this the same 0-60 time as a 300ZX twin turbo manual?????

Zeds from here at TOTB the answer is non, again because you are all too scared to have go.

 

You can dissagree with what you like, it's your opinion. :)

Besides I never said a 4 pot would have bigger torque than a 4 pot.

 

Do you know what the relation is between torque and HP?

 

just incase you didn't it's...

 

BHP = (torque * revs) / 5252

 

If two cars have 700 bhp then torque and revs are the only two variables.

so if a V6 has more torque then the max power is lower in the rev range.

 

Here is the relation between torque and HP:

 

Torque is the power of a rotating force, which is the product of one of two equal, opposite, and parallel offset forces and the distance between them. When this is applied to a car this means the effort exerted on a shaft to move the vehicle along. When torque is great enough to move a shaft through a given distance in a given time this is expressed as power and measured as horsepower. The more force you can use to make the wheels go from say 50mph to 70mph the less time it will take to get there.

 

The theory is that torque has nothing to do with engine speed (revolutions per minute (RPM)). The torque figures depend on the mean effective pressure in the cylinders (MEP), which is calculated by taking away the total of the average pressures on the induction, compression and exhaust strokes from the average pressure on the expansion strokes.

 

In reality the MEP of an engine, decreases at high speed and the torque drops off. So the MEP is calculated from the Brake Horse Power (BHP) figures for an the engine, taking into account the inefficiency of the engine, so now the MEP becomes the Brake Mean Effective Pressure or BMEP, which is measured in lb in sq!

 

Taken from Thor Racing :)

I know what torque is thanks. :)

I've got a whole selection of books here, do you wsnt to borrow any?

 

That isn't a relation between BHP and torque.

 

Trust me...

 

BHP = ( Torque (in lb/ft) x Revs ) / 5252

 

 

Also taken from Thor racing...

 

Jsut shows that it's a good idea you have lots of torque as the Z32 is a good 300kg heavier than an MR2/200sx. :D

 

The more torque you have the more weight you can move forward from a standstill. Or in other words if the wheel you are trying to turn is stiffer it may not turn at al with 50 lb ft - it requires more force to turn it. Therefore if you increase the force by 50lb and the wheel turns then need 100 lb ft torque to move it. Apply that to a car with a trailer, you require more force to propel that whole unit (car and trailer) forward than you would with just the car. So once again with more torque you can move your car and trailer off from a standstill quicker and with less effort than you could before

here you go, some really useful (easily understood) info on mechanics, how engines work, loading etc etc.

Well worth a read.

 

Start with this one...

http://www.epi-eng.com/BAS-PwrTrq.htm

 

Other mechanical basics...

http://www.epi-eng.com/BAS_TOC.htm

 

Lots of good stuff here on BMEP, efficiency etc...

http://www.epi-eng.com/ET_TOC.htm

 

Read it before you argue anymore. :)

LOL, 300kg of extra weight will have little effect on cars running 3 to 400hp especiall if the suspension is set up correctly, at least on the roads. On track thats a differant matter weight counts. But it's on the roads that really matter, thats were you get to use the power not on a 1/4 mile stretch of road or on a track!

here you go, some really useful (easily understood) info on mechanics, how engines work, loading etc etc.

Well worth a read.

 

Start with this one...

http://www.epi-eng.com/BAS-PwrTrq.htm

 

Other mechanical basics...

http://www.epi-eng.com/BAS_TOC.htm

 

Lots of good stuff here on BMEP, efficiency etc...

http://www.epi-eng.com/ET_TOC.htm

 

Read it before you argue anymore. :)

 

Nice links, although I know most of that stuff anyway from senior school :)

OMG you are unreal, did you go to school?

 

Of course it will Force = Mass X Acceleration.

So then let sdo some maths. :)

 

Zed say is 1650 with driver.

S13 is 1350 with driver.

Say they both have the same torque for the sake of argument, 300.

I'll transpose that to give acceleration.

 

A = F/M

 

Zed accelleration is

A = 300/1650

A = 0.1818 units distance/units time

 

S13 accelleration is

A = 300/1350

A = 0.2222 units distance/units time

 

Stick those figures back into F = MA to get the force needed to achieve an acceleration of 0.2222 for the heavier car.

 

F = 1650 * 0.2222

F = 366.

 

That's 22% more.

 

Then there is gearing (which multiplies torque) and drag.

LOL if you know it why the hell are you arguing. :D :D

OMG you are unreal, did you go to school?

 

Of course it will Force = Mass X Acceleration.

So then let sdo some maths. :)

 

Zed say is 1650 with driver.

S13 is 1350 with driver.

Say they both have the same torque for the sake of argument, 300.

I'll transpose that to give acceleration.

 

A = F/M

 

Zed accelleration is

A = 300/1650

A = 0.1818 units distance/units time

 

S13 accelleration is

A = 300/1350

A = 0.2222 units distance/units time

 

Stick those figures back into F = MA to get the force needed to achieve an acceleration of 0.2222 for the heavier car.

 

F = 1650 * 0.2222

F = 366.

 

That's 22% more.

 

Then there is gearing (which multiplies torque) and drag.

 

Wooo who's a clever boy then!? Those figures mean nothing in the real world.

Like I said, on the track weight counts. :)

erm, i take it that's one - nil?? :rofl: :rofl:

This is the best afternoons entertainment I have had in a long time!

You homebrew are a muppet.

 

lets get some zeds and 200sx on track then, that'll be fun watching the zed wallowing around the twisties. :D

The facts are simple and well known...

 

Torque for acceleration, power for top speed... END OF ARGUEMENT!!!!!

 

300kg may matter, it may not, depends on what its on top of ;) 1350+300=1650=22% increase. 6000+300=6300=5% increase... Thats what its all about, percentages :D

You homebrew are a muppet.

 

lets get some zeds and 200sx on track then, that'll be fun watching the zed wallowing around the twisties. :D

 

If i'm a muppet then you are a :xxx:

 

LOL, driving on a track is down to driver ability or lack of, not just the weight or power of a car :rofl:

I know, it's more driver than power.

 

Why am I a tosser?

Because I'm right and you don't know your arse from your elbow. :D

LOL, Peace:)

K. :)

 

Tell you what though, a track day would be good. :)

 

SXOC have had a few failed attempts to get one sorted, mainly because everyone says yeah cool, then when it comes to it it doens't happen because people drop out etc so not enough numbers.

 

Maybe a joint SXOC/300zx track day would be a possibility?

 

Preferably once I've built my new engine. :)

Homebrew, if you open that $hit'ole you call a gob just a little bit wider you can SUCK MY FUTHAMUCKIN C0CK YOU TW@TTER!!!!!!!!!!!

Homebrew, if you open that $hit'ole you call a gob just a little bit wider you can SUCK MY FUTHAMUCKIN C0CK YOU TW@TTER!!!!!!!!!!!

 

:shock: is that big enough for you?

K. :)

 

Tell you what though, a track day would be good. :)

 

SXOC have had a few failed attempts to get one sorted, mainly because everyone says yeah cool, then when it comes to it it doens't happen because people drop out etc so not enough numbers.

 

Maybe a joint SXOC/300zx track day would be a possibility?

 

Preferably once I've built my new engine. :)

 

Yeah that sound great, although I have never done this sort of thing so am hesitant about saying yes (don't want to smash my car up). If you want to put up a seperate thread and guage any interest?

K. :)

 

 

 

Preferably once I've built my new engine. :)

 

 

Jezz how many engine builds have you done?

:shock: is that big enough for you?

 

nope :xxx: :xxx: :xxx: :slap:

a few 4 or 5 of my own, keep sticking more bits in it.

Broke one as well once. LOL :D :D

 

Just building a mental SR20 for a mate too.

 

Homebrew, I'll have a word with SXOC event man, and PM your event dude.

I've only been on track once, it's harder than it looks, but bloody good fun.

 

A proper track day should be fine, you get all day to get used to it and decent marshalling.

Perhaps an Airfield day would be better, less stuff to hit. :D

300zx did one a while back (2-3years), didn't you guys.

Airfield day is the answer without doubt :)

 

Done time on track and also time on the airfield and the only place I felt 100% confident to give it some was on the airfield. Although saying that the track experience was Trax 2001 and we all know about events like that don't we :D

LOL, they used the manufactures newest model i.e the Skyline is a newer car than the Z32, as for the Toyota, the SupraIV has no succession. I'm sure they will use the Z33 in the new "Fast And Furious". :nono:

 

Sorry to disapoint you Homebrew but Toyota Make 3 models of Celica TDR starting with the basic 230bhp 1.8 then they make a 2.0ltr 280bhp single Turbo model for the Jap market and a 330bhp model exclusively for US Market. :shock:

 

I know because I imported a 2002 model for my wife. Only the 230bhp model but it handles fantastic. they're basicly the same engine as found in the Mister 2

Sorry to disapoint you Homebrew but Toyota Make 3 models of Celica TDR starting with the basic 230bhp 1.8 then they make a 2.0ltr 280bhp single Turbo model for the Jap market and a 330bhp model exclusively for US Market. :shock:

 

I know because I imported a 2002 model for my wife. Only the 230bhp model but it handles fantastic. they're basicly the same engine as found in the Mister 2

 

I was talking about the SUPRA not the celica!!