Now that I have a new Det Sensor and the Z is now running Properly again it was time to give it another blast on the rolling road... :dance:

 

Originaly in Safety Boost it was making:

 

274.2 BHP and 243.2 lbft of torque. :headvswal

 

Got it dynoed again on Saturday just gone, it was stinkin hot here in cornwall too. The in car Ambient temp was showing 31 degress @ 2:57 in the afternoon! :cool: :cool:

 

The car had 5 runs in total with 1 BHP Difference between all of them.

The best run it made:

 

333.0 BHP and 302.6 lbft of torque!! :hyper:

 

Am well happy with this considdering it was a really hot day and only have basic mods!!

 

My car is a red 1991 UKTT with the only mods being a Blitz air filter, Z centre exhaust system which is DE-CATTED and replacement standard Turbo's with 360 thrust bearings running standard boost and Stock ECU..

 

This proves two things really, if your det sensor is working correctly then no matter how hot the weather is outside your Z WILL NOT go into Safe mode and also if it does you loose around 60BHP depending on what mods you've got!!! :slap:

 

The dyno run was done in 5TH Gear and Not 4TH so the car would generate max boost under load.

 

Total Results.

 

Max BHP 333.0 @ 6466 RPM (165MPH)

Max Torque 302.6 @ 4625 RPM

Max Boost 0.71 Bar From 2971 Rpm

 

Will upload the Graphs on here eventually for all to see!!

The dyno run was done in 5TH Gear and Not 4TH so the car would generate max boost under load.

Doesn't that mean the dyno would underread, or were the figures adjusted?

330bhp on stock boost? If thats true i'll eat my hat

330bhp on stock boost? If thats true i'll eat my hat

 

You can eat my hat as well to save me chewin LOL

 

No way can you get 333bhp with just an exhaust and filter change in 31 degree heat. Something can't have been reading right.

Was that at the wheels or engine?

yeah seems like the dyno may not have been setup / configured correctly. What place did u take it too ??

Congrats :D, can you post the Power at wheels figure, as the power at Engine is only a estimate calculated from the Wheel figure.(and testers often use wrong calculation)

 

Heat is one of many factors that can cause detonation, and the car does not go into safety mode with detonation. It runs alternative fuel and timing maps instead when it senses it.

At the engine, including conversion errors, mine is 500bhp :D ;)

yeah seems like the dyno may not have been setup / configured correctly. What place did u take it too ??

 

The rolling road is a TATdyno system installed at Richard's Bros in Redruth - They had the German bloke from the company that wrote the software for the system there on the day configuring everything so it would be accurate. As the rolling road is supposed to be one of the best out there. There website is http://www.TATdyno.com

 

Although it was 31 degrees heat - don't forget there is a bloody massive cooling fan in front of the car which cools things down a lot!! The power at the wheels figures came out at 239BHP at 6021RPM, oh yeah just thought of another mod that was done which should make too much of a difference - EGR valves removed!! My car has never been chiped as far as I Know!!

Many of the fellas on here have ERG, PCV etc etc removed and none of em are getting anywhere near those figures on a stock engine. If you truly are getting those figures I think you should have a long look at your car as methinks someone has been playing befor you.

 

You will need to know, as its easy to turn these into a grenade, and none of us wants to see that happen except maybe the Brakers on here with engines t sell.

So they're going on 40% transmission loss?! :o

Might be accurate but that's more like the adjustment they make for a 4x4.

 

Thor told me to go on 20% loss when they gave me my figures...

If thats how we work it out i've hit my goal of 555bhp at the engine! Yeeehaaaa! :D

239 bhp at the wheels is 286.8 at the Fly :cool: I had mine done and was 290.6 at the wheels which calculates to 348 at the fly. It looses roughly 20% Fly to wheels.

Many of the fellas on here have ERG, PCV etc etc removed and none of em are getting anywhere near those figures on a stock engine. If you truly are getting those figures I think you should have a long look at your car as methinks someone has been playing befor you.

 

You will need to know, as its easy to turn these into a grenade, and none of us wants to see that happen except maybe the Brakers on here with engines t sell.

 

Thanks mate, will do. Having said that ever since I've had the engine replaced at the begining of the year it has felt much better and pulled stronger than the original one I had in there!! Ecu has always been the same so maybe this replacement one I got from a breakers has a few extra's like reprofiled cams Maybe?? It came from a 93 Spec ZX but my Z is UK 91 Car..

So they're going on 40% transmission loss?! :o

Might be accurate but that's more like the adjustment they make for a 4x4.

 

Thor told me to go on 20% loss when they gave me my figures...

If thats how we work it out i've hit my goal of 555bhp at the engine! Yeeehaaaa! :D

 

That's lovely Chris!! :p

All I know is the software calculates the lot and works it all out to give the figures... Given that UK Zed a roughly 280 - 284 standard what do you recon it should be making with my mods baring in mind although it's running standard boost the tubs are 360degree thrust bearing and run a slightly bigger housing...

239 bhp at the wheels is 286.8 at the Fly :cool: I had mine done and was 290.6 at the wheels which calculates to 348 at the fly. It looses roughly 20% Fly to wheels.

 

 

Sorry Sarge, your calculations are incorrect although I agree that you lose around 20% through the transmission.

 

but if you measure 239 at the wheels then you need to divide this by 0.8 to get the bhp at the fly - which equals - 298.75

 

To illustrate, if you take your stated flywheel bhp (348) you should be able to muliply this by 0.8 to get the bhp at the wheels.

 

You were simply adding 20% to the bhp at the wheels.

 

Sorry for pointing this out, but it does mean Jon's figures should be about 298bhp at the fly.

 

Mike...

MGH297

If i do your calculation on 290bhp at the wheels then it makes mine 362 at the Fly.....:D:hyper: :nana2:

You live and learn :cool:

MGH297

If i do your calculation on 290bhp at the wheels then it makes mine 362 at the Fly.....:D:hyper: :nana2:

You live and learn :cool:

 

Yes Sarge, you've got an extra 14 bhp just through the power of maths, you have got to be happy with that.

 

Mike...

I've always added on 20% to the bhp at the wheels to get the fly bhp. So what we're saying, is we should add 25%?

 

In the voice of Mr Burns ---> "Excellent!"

 

Steve :)

I've always added on 20% to the bhp at the wheels to get the fly bhp. So what we're saying, is we should add 25%?

 

In the voice of Mr Burns ---> "Excellent!"

 

Steve :)

 

I know this can be a little confusing, but you have to think about it for the other way around.

 

If you have 100 bhp at the fly (assuming you lose 20% through the transmission) you will have 80 bhp at the wheels. to do the maths, you multiply by 0.8 (or 80%).

 

Working backwards to get from 80 bhp at the wheels you have to divide by 0.8

If you were to just add 20% you would end up with 96 bhp.

 

Does this make sense?

I know this can be a little confusing, but you have to think about it for the other way around.

 

If you have 100 bhp at the fly (assuming you lose 20% through the transmission) you will have 80 bhp at the wheels. to do the maths, you multiply by 0.8 (or 80%).

 

Working backwards to get from 80 bhp at the wheels you have to divide by 0.8

If you were to just add 20% you would end up with 96 bhp.

 

Does this make sense?

 

Gotcha! :cool:

:D 14 more Bhp........:hyper: :rofl: