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[jb]

Just thought members might be interested on my dyno results today at the dyno at Santa Pod PVS.

The car is an 02 saloon ex Humberside training car manual with lsd. I bought it in 2006 with 63k and now its on 82k.

Totally standard car which has always felt very quick compared to other Omega's I have owned and now I know why - knocking out 229.5 bhp at 6200 rpm !

[terry paget]

Most impressive. Is it auto or manual?

[TheBoy]

Most impressive. Is it auto or manual?

Manual with LSD - 2nd sentence

[serek]

Just thought members might be interested on my dyno results today at the dyno at Santa Pod PVS.

The car is an 02 saloon ex Humberside training car manual with lsd. I bought it in 2006 with 63k and now its on 82k.

Totally standard car which has always felt very quick compared to other Omega's I have owned and now I know why - knocking out 229.5 bhp at 6200 rpm !

that's good result 
mine was 221,5 bhp with outany mods with 160K on clock
then who knows but was fast for omega too

[chrisgixer]

More than standard. Q is why?

 

[05omegav6]

Dodgy dyno perhaps

[tunnie]

LSD diff ratio altering things, what if dyno was setup for standard ratio diff? 

We've seen enough ex-plod to know their engines are not modified.

[TheBoy]

2 mass produced engines will give 2 different power outputs.

[albitz]

Vauxhall have long been known for quoting conservative power figures for their engine,while Ford on the other hand are known for the opposite.

[TheBoy]

Vauxhall have long been known for quoting conservative power figures for their engine,while Ford on the other hand are known for the opposite.

Aye, my 1.6 Focus, supposedly 105bhp IIRC, must have produced all of about 30bhp. PoS.

Did I mention that Focus is a heap?

[zirk]

LSD diff ratio altering things, what if dyno was setup for standard ratio diff? 

We've seen enough ex-plod to know their engines are not modified.

Probably seen, or more to the point, owned more ex plod than you have (not wishing to sound aggressive here), some are modified, depends on which Force and for what use.

In my experience, most are standard, some have re chip or remap, some Ive had have Gas Flowed and widened Throttle Bodies, and Gas flowed inlet pipes. I've even come across a 3.0 from NI that had a Turbo bolted to it.

Most have LSD but standard Diff ratio's, come across a couple that have an Auto LSD Difs fitted to a Manual giving better acceleration over standard, cant see any reason why that would effect Dyno results though as the Transmission and Diff loss is calculated on the Dyno Engine wind down.

[terry paget]

I read in Straight Six News how these dynamometers work. My recollection is that they do not measure BHP on the road, they measure BHP at the wheels by driving rollers with the engine, then the rollers drive the engine at the same rpm to measure the power loss in transmission. They add that figure to the first figure, and announce the total as the engine output.

Is that right, or am I talking nonsense? I never fully understood the method.

[Kevin Wood]

They measure torque at the wheels using a retarder on the rollers with a strain gauge measuring the applied force. Multiply that by roller RPM and you have power.

The losses are calibrated out by doing a "coastdown" whereby the car is declutched at peak RPM and the rate at which the speed of the rollers decays is measured. This takes you back to power at the flywheel. With a well calibrated road operated correctly and compensated for weather conditions it can be very accurate. With a "cap on backwards" chav at the controls tweaking it for the biggest "pub figure" it's a waste of time, so results can vary.

Don't be fooled into thinking power at the wheels means anything. The losses when the wheels are strapped down onto the rollers are far higher than when on the road so a coastdown is absolutely necessary to get a meaningful figure.

[terry paget]

LSD diff ratio altering things, what if dyno was setup for standard ratio diff? 

We've seen enough ex-plod to know their engines are not modified.

Most have LSD

Do most explods have LSDs? I have had six explod Senators and two explod Omegas and never had an LSD yet. I once had an LSD fitted Peugeot 505 GTI and it was enormous fun on icy roads. I see Omega LSDs sold on e-bay for premium prices. Could it be that certain police forces specified LSDs?

I was led to believe by my car handbook that traction control would apply rear brakes when wheelspin was detected making LSDs unnecessary, but it does not seem to work that way.

[Kevin Wood]

Do most explods have LSDs? I have had six explod Senators and two explod Omegas and never had an LSD yet. I once had an LSD fitted Peugeot 505 GTI and it was enormous fun on icy roads. I see Omega LSDs sold on e-bay for premium prices. Could it be that certain police forces specified LSDs?

I thought LSD was standard on the 24v Senator anyway?

I was led to believe by my car handbook that traction control would apply rear brakes when wheelspin was detected making LSDs unnecessary, but it does not seem to work that way.

TC works that way in the sense that it makes it less easy to crash it when you overcook it on the power.

An LSD actually gives you more traction (and doesn't suddenly shut the throttle when you most need it open!) so it's certainly the better solution if "pressing-on" is a requirement.