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[Webby the Bear]

Hi boys. Not been around for a while as I mentioned last time works so busy.

So got the old girl booked in with Northampton Motorsport for two weeks time. Someone on here recommended them so thanks for that.

I've spoken to them and they've assured me they can dyno test it being an auto box no problem. So out of interest how will they do this without a tech2? Well, that said they may have one who knows.

Anyways..... predictions..... 

[Doctor Gollum]

165 bhp and about 195lb/ft, oh and about 9.5 seconds

Edited, as I forget it's actually a 2.5

[Webby the Bear]

Ps to add re the history of the motor....

It's clicked over (today coincidentally) to 117k miles. I got it with 69k in 09 on the clock and an unknown service history. Ever since then its had oil changes every 3-5k. All other items serviced every 6 months or so.

Sometime ago TB drove it and said it was a bit underpowered. I then found a fault with the multi ram that I fixed. I then started driving it a lot harder and the gearbox drops a cog at will now.

I then took it to serek who thought it was "quite nippy" for an omega.

I've tested compression and all cylinders are within spec. I've done vacuum tests and not a hint of exhaust blockage or anything untoward.

To tell the truth the only issues I've had in the last few years is cam cover gaskets.

[Webby the Bear]

135 bhp and about 165lb/ft, oh and about 10.5 seconds

After doing quite a bit of research on this I think you're about right 

Pray tell though why you think that. Bearing in mind that it had 170 out of the factory

[Doctor Gollum]

135 bhp and about 165lb/ft, oh and about 10.5 seconds

After doing quite a bit of research on this I think you're about right 

Pray tell though why you think that. Bearing in mind that it had 170 out of the factory

See above 

 

[Webby the Bear]

135 bhp and about 165lb/ft, oh and about 10.5 seconds

After doing quite a bit of research on this I think you're about right 

Pray tell though why you think that. Bearing in mind that it had 170 out of the factory

See above 

 

lol I'm thinking you were closer with your first answer 

But we will see. Out of interest have we seen any other non modified autos on the dyno, results etc? I can't be the first nutcase to take their slow unmodded sh*t box to the dyno..... can I? 

[Nick W]

135 bhp and about 165lb/ft, oh and about 10.5 seconds

After doing quite a bit of research on this I think you're about right 

Pray tell though why you think that. Bearing in mind that it had 170 out of the factory

The dyno measures the power at the wheels. Vauxhall's figure is at the flywheel. There's a big difference! And 40hp loss from a well-used automatic transmission (and the rest of the drivetrain) would be reasonable.

While you're there, get them to show you what other cars make on the same machine, as a single figure won't tell you anything useful.

[Webby the Bear]

135 bhp and about 165lb/ft, oh and about 10.5 seconds

After doing quite a bit of research on this I think you're about right 

Pray tell though why you think that. Bearing in mind that it had 170 out of the factory

The dyno measures the power at the wheels. Vauxhall's figure is at the flywheel. There's a big difference! And 40hp loss from a well-used automatic transmission (and the rest of the drivetrain) would be reasonable.

While you're there, get them to show you what other cars make on the same machine, as a single figure won't tell you anything useful.

Will do nick cheers 

Did Vauxhall ever give a figure at the wheels as I couldn't find one?

[Nick W]

Will do nick cheers 

Did Vauxhall ever give a figure at the wheels as I couldn't find one?

I doubt it. Why would anyone care?   Especially as they don't publish the torque curve, which would actually be of some use.

[Webby the Bear]

Yeah I couldn't find it anywhere.

If you had to guess (to give me some basis) what do you think would have been the HP at the wheels from a brand new 2.5?

[biggriffin]

Before you take it, give it a service, plugsx6 new air filter, New fuel filter, oil change and filter, and new leads., clean throttle bodies, gearbox oil change,  should do.

[serek]

If you can wait few weeks will come with you

[Webby the Bear]

Before you take it, give it a service, plugsx6 new air filter, New fuel filter, oil change and filter, and new leads., clean throttle bodies, gearbox oil change,  should do.

Well ahead of you bg lol all done last week. Well, except the gearbox fluid. But did that 6 months ago. 

[Webby the Bear]

If you can wait few weeks will come with you

Yeah I can rearrange mate. Pm me your number cos my phone broke last night and I got no numbers at all 

[Webby the Bear]

Ps is EMD still on the forum? Could get Martin and steve up and we can all laugh when my car blows up on the dyno all celebrate when it produces over 300hp