Menu toggle

Nitrogen Fill - One for the Boffins

Clive

I dont mean to be picky but I hope we dont fill our tyres with nitrogen dioxide (NO2) . I think it is plain simple Nitrogen ie N2 which is chemically inert whereas NO2 is quite toxic.

I think the reason that N2 filled tyres do not require topping up is that the nitrogen molecule is quite large when compared to oxygen and water which can permeate the rubber.
 
ORIGINAL: jonathanw

Clive

I dont mean to be picky but I hope we dont fill our tyres with nitrogen dioxide (NO2) .
Click to expand...
Looked back through the posts Jonathan and think Clive only mentions N2! Of course we could try N2O but that would just be for a laugh.........[:D]
I would be interested to know how pure the N2 might be after 2-3 fills/purge cycles. Short of sucking out the residual there will always be a certain amount of air in the mix?
 
Alan

Thats very strange because on my emails from I definitely saw NO2 but miraculously on the above posts I now see NO!.

"I do speak from experience as I've used N02 in my tyres exclusively for the last 4 years, in turbo, GT2 and Scuderia. There's no question in my mind nitrogen is much better. The principal point is that frequent topping up is not required as pressure is better maintained. I had my Ferrari for 2 years and only topped the tyres up once."

I think we should all have a laugh or maybe a little moderator editing [:D][;)]
 
NO2 lads?

It's nothing to laugh about!
19.gif



Regards,


Clive.
 
Filled the tyres with oxygen free nitrogen from a bottle, set the regulator to about 50psi and then bled them down to 10psi before refilling 3 times to try and flush them out.

Finally set the pressure with an accurate gauge.

One point to watch was that even though on the day of the fill it was 19 DegC in the garage - when I checked the pressures a day later (garage at 20 DegC) they had gone up by almost 2 psi.

When you take the nitrogen out of the bottle it is noticable that the bottle gets pretty cold - so you are filling the tyres with abnormally cold nitrogen gas.

You need to check the pressures again after everything has warmed up to 21 DegC.

Lets hope Spain is hot enough to warrant the hassle
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top