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fortfun

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Fort Collins Colorado USA

4th Mar, 2009 at 11:02:55pm

Just recently read that altitude has a significant effect in pushing spool RPM upward. I'm at 5000-feet, and have not taken the car down to low altitude to compare. Right now I'm getting 5psi boost @ about 2800RPM - I think it is better in colder, denser air, will have to carefully test that. About 70F (20C) today.

Have any of you noticed a difference with altitude?

1275 with Back Door Turbo

Bat

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Bermingum

5th Mar, 2009 at 12:44:38am

Hi
Don't think we've got much in the way of altitude in the UK?
Cheers
Gavin :)

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fortfun

141 Posts
Member #: 954
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Fort Collins Colorado USA

5th Mar, 2009 at 04:38:13am

No one takes their car to the continent to run on the autobahn?

Matt and Steve should definitely go to Bavaria and take some video of pushing Audis, Mercedes, and BMWs out of the left lane.

When I was in Germany it was interesting that I saw almost no Porsches. We seem to have many more in the US than in Germany.

Edited by fortfun on 5th Mar, 2009.

1275 with Back Door Turbo

steve1275

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Bromsgrove

5th Mar, 2009 at 08:11:30am

The turbo is affected by air density,and spools up to higher speeds at altitude.Years ago we used them for altitude compensation on diesel engines in Mexico.Unfortunately over a certain altitude,the turbo went over design speed and exploded!

'Where does the engine go?'

John

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Mongo

Barnsley, South Flatcapshire

5th Mar, 2009 at 09:16:35am

Damn! I wanted to be the first turbo mini to drive to the top of everest too.

If something is worth doing, it's worth doing half of.

Vegard

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Norway

5th Mar, 2009 at 09:34:09am




On 5th Mar, 2009 fortfun said:
Audis, Mercedes, and BMWs out of the left lane.

When I was in Germany it was interesting that I saw almost no Porsches. We seem to have many more in the US than in Germany.


Loads more of balding men with midlife crises in the US you know.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.
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