SP rwhp ??

wasp47 · Postby **wasp47** » Sat Dec 01, 2018 2:10 pm

Hello all
I have searched but cant find the rwhp for a std SP, can anyone help
Cheers
Steven

StanTheMan · Postby **StanTheMan** » Sat Dec 01, 2018 4:06 pm

there is usually about 25% drive-line loss.with Mx5 from that era

power will vary between cars. depending on a lot of things.

but it would be somewhere around the 110-120 rwkw for a stocky

hks_kansei · Postby **hks_kansei** » Sat Dec 01, 2018 4:22 pm

StanTheMan wrote:there is usually about 25% drive-line loss.with Mx5 from that era

power will vary between cars. depending on a lot of things.

but it would be somewhere around the 110-120 rwkw for a stocky

Yeah, depending on which dyno run from my car is used, based against the Mazda quoted engine power, it's between 23% and 28%
The 28% is the more likely, since that was on a stock ECU

But, diff ratio (4.1 for me), wheel size, and tyre pressure will affect it too.
So use it as a really rough guide.

Red Dragon · Postby **Red Dragon** » Sat Dec 01, 2018 9:32 pm

My research says 113kw, but some people say closer to WRX specs.

bigdog · Postby **bigdog** » Sat Dec 01, 2018 10:02 pm

The only stock SP I’ve seen dynoed ran 130rwkw prior to installing the T piece mod on the same day, then it ran 150rwkw. Mine already had the mod installed and ran 147rwkw, so around 130 stock would be the ball park. This was on a Dyno Dynamics setup at Thornleigh - I think it was a Nissan club day we were invited to.

wasp47 · Postby **wasp47** » Sun Dec 02, 2018 10:07 am

For all you SP fans, yesterday at a local Hervey Bay car show was a one owner in black,immaculate

Engineer · Postby **Engineer** » Mon Dec 03, 2018 2:39 pm

Hi All,

157 kw at the flywheel is approx. 129.75 rwkw on a dyno dynamics dyno.

So the above readings are correct.

Drivetrain loss is about 21%

lambertius · Postby **lambertius** » Sat Dec 29, 2018 3:15 pm

I'll be taking my car to a dyno in the new year. I'll post the results up as stock and with the change to the boost reference (T-Piece).

Cheers

pcmx5 · Postby **pcmx5** » Sat Jan 05, 2019 1:00 pm

Over a few years the Vic Club used Caulfield Jags Dyno Dynamics for their Dyno Days. SP's were consistently around 113-7 RWK.
Peter.

lambertius · Postby **lambertius** » Wed Apr 03, 2019 7:53 pm

lambertius wrote:I'll be taking my car to a dyno in the new year. I'll post the results up as stock and with the change to the boost reference (T-Piece).

Cheers

viewtopic.php?f=43&t=77733

As promised.

116wkW stock.
134wkW with T-piece.