rolling road

[ctheo0]

Is it normal for a 6l VXR to be reading 330 bhp and 289 ft lb whenthe cat has a full wortec cat back with headers

[wortec1]

The Torque fig is low which tends to say the inlet temp was above normal.....

As a guide

Hub dyno = 383hp
Quad roller dyno = 347hp
Twin roller dyno = 358hp

here is an independent test by VXR-DAZ which shows 336hp on a quad roller with a standard car at 295hp approx

[stigmundfreud]

is that at the wheel figures?

[VXR_Daz]

It sure is rwhp

[ctheo0]

yes at the wheels

[stigmundfreud]

ctheo0 said:

yes at the wheels

then its good! Though the 295ft/lb at the wheels seems low

[VXR_Daz]

Sounds very low, have you got a graph?

[V6 JDT]

Here we go again.......................

[VXR_Daz]

V6 JDT said:

Here we go again.......................

This is a little different as the power seems about right but torque seems very low, would just be interested to see the graph

[crisisjez]

If you RR`d it today or yesterday then It`ll have been pulling timing.

These LS engines dont run at all well hot, which is what they do on a warm day.

I RR`d mine after having the wortec full system fitted incl the new CAI and guess what, the RR figure was lower than the previous run before when just the non intercooled s/c was fitted.

All down to intake air temp, the car got too hot because it was a warmer day than last time.

Unless you felt the car was down on power which is why you went to see Charlie dont pay too much attention to those figures and have another go when the air is cooler.

If I was a manufacturer I`d cheat like a Ba****d to get a good bhp figure for my car and do all my dyno runs in Norway in the winter!!!!.

[Rapidgb]

Bonnet up or down

[Rapidgb]

Thought they were made in Oz.....so heat no problem!!!

Edited by Rapidgb on Monday 27th August 20:32

Edited by Rapidgb on Monday 27th August 20:33

[stevieturbo]

Rapidgb said:

Thought they were made in Oz.....so heat no problem!!!

Edited by Rapidgb on Monday 27th August 20:32

Edited by Rapidgb on Monday 27th August 20:33

But in Australia, they Dyno the cars upside down so all the heat falls out

[crisisjez]

[Vixpy1]

crisisjez said:

Unless you felt the car was down on power which is why you went to see Charlie dont pay too much attention to those figures and have another go when the air is cooler.

He did'nt come and see me Jez , not one of my customers

To the thread starter, if you could post the graph, or tell me where it was done, maybe i can help with interpretation of the results

Edited by Vixpy1 on Monday 27th August 22:06

[crisisjez]

Sorry Charlie just realised the Graph was from Wortec, Doh!!!

See you soon

Edited by crisisjez on Monday 27th August 22:18

[VXR_Daz]

It's my graph, leave me alone!

crisisjez said:

Sorry Charlie just realised the Graph was from Wortec, Doh!!!

See you soon

Take mine too can you mate?

Edited by VXR_Daz on Monday 27th August 22:19

[ctheo0]

how do i get the chart on here

[well_fans]

scan it onto computer and host it on something like photobucket, then post the link in here.

[ctheo0]

here is a link to my test