With the RR weekend just gone some of you will be pleased and am sure others will be pissed off:rolleyes:

 

So will this really give you 378BHP?:rolleyes: :o :confused:

 

 

http://www.jimwolftechnology.com/ecu.htm

err No

Depends if you drive an auto or manual and what RR you go to :D.

 

Pete only had 12.5 boost and managed to get 403 bhp at the fly :eek: accroding to the RR computer.

Yeah, they always seem inflated.

Notice they quote HP though not BHP, I think there's a difference ?? Never been able to find a conversion though.

Thats horse power, not Brake horse power. 2 diferent things

Originally posted by mickeyb2

Thats horse power, not Brake horse power. 2 diferent things

 

And the difference is ?????

Generally i believe their hp mostly of course when they have a dyno chart.What i don't believe or find it stupid and destroying is when they put let's say hks 2530 turbos or similiar turbos without changing the internals.I know that the temp in the uk is very unique and good to own a turbo car except when is raining.But what happens in the Us where in some places the temp is like here in Cyprus 40-45 degrees in the summer.My car is stock and when i must drive it in these conditions i believe i loose 50-80 hp because of the hot air.How can they have 500hp 300zx with aftermarkets turbos and stock internals???and never break???

What i don't believe or find it stupid and destroying is when they put let's say hks 2530 turbos or similiar turbos without changing the internals

 

:D:D:D Just like I did with my PE1420s? Ooooh I'm a bad boy :D

This may be of some help ...

 

http://www.designchambers.com/wolfhound/wolfhoundRACHP.htm

Originally posted by bagins

And the difference is ?????

 

The difference is that bhp can be up to 25% less than hp.

You have to take into account Friction of the engine and all ancillarys, alternator, pas etc.

 

so quoted figure of 378hp can be as low as 283bhp.

Any good?

 

cheerz, mickeyb

Well according to this chart I should be at nearly 435 BHP

 

Only 100 off so quite close :rolleyes:

 

http://shop.store.yahoo.com/sgpracing-store/9096nis307.html

I read some where that BHP is the opposite force needed to cancel out the HP at the wheels.

http://www.300zx.co.uk/forums/showthread.php?s=&threadid=24589

 

Horsepower is a measure of power. Obviously you can't measure power unless that power is working against something - lifting a weight or working against a friction drag (brake).

 

Why not? Imagine a Z with its wheels jacked up doing 3,000 rpm in any gear. Your foot would be barely touching the throttle - so the engine is clearly not putting out its full power @3,000 rpm.

 

If you want to measure the full power you get at 3,000 rpm, just put yer foot down - but then, with no load, the revs rise. So to keep the revs at 3,000 with your engine at full throttle, you need to brake it. The force you need to do this is a measure of the power of the engine. Hence brake horsepower or bhp.

 

(Rolling roads work slightly differently as what they do is measure how fast your wheels can accelerate a known weight - the rollers - which is why they don't work "steady-state". This gives you a true rear wheel brake horsepower. To work out the transmission losses, and hence estimate power at the flywheel, you then take your foot off the throttle which sets your engine power at 0. The rate at which the rollers slow down is a measure of the drag (or transmission loss) of your transmission. Which they add to the rear wheel bhp to get the estimate of bhp at flywheel.

 

This is why estimating the flywheel hp for Z autos is so contentious - these autoboxes do not work the same way as normal autoboxes so standard estimate procedures built in to most rolling roads can't cope.)

 

Engine manufs in the US worked out that if you took off all the gubbins (alternator, water pump, aircon etc etc) you could measure a much higher figure and thus say your engine was higher hp on the bench than actually in the car.

 

So the SAE set a standard configuration - and STP - so that all the right ancilliaries were on the engine while it was being tested - hence sae bhp.

 

sae bhp and normal bhp are the same hp - just the sae method ensures tests are comparable.

 

HTH - Gio

 

(stay awake at the back there: there'll be a test later :D )

403, 403, 403, 403!

 

:dance: :dance: :dance: :dance:

Well according to this chart I should be at nearly 435 BHP

 

Exactly the same as me Ryan :confused: