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NA hardtop weight?

Posted: Sat Mar 25, 2023 11:50 am
by bruce
Hi,
Has anyone weighed their hardtop? I'm guessing 20 to 25 kgs.
I weighed my car yesterday. Visited my local tip/recycling centre and rolled directly onto the scales, 1320 kgs. As I rolled off I stopped and got the rear weight at 600kg (my logic is correct?).
Weight included me, full fuel tank, hardtop. Thus a net weight of 1200 kgs approx. Note my car is not really an mx5 anymore...

Re: NA hardtop weight?

Posted: Sat Mar 25, 2023 12:38 pm
by bruce
Bit of searching on a US forum; someone actually weighed theirs, 45.5 pounds = 20.638 kgs

Re: NA hardtop weight?

Posted: Sat Mar 25, 2023 4:22 pm
by Rocky
Important to make sure you don't have a fat hardtop, Bruce.
Too many Maccas and chips will result in a reduction in performance.

Re: NA hardtop weight?

Posted: Sat Mar 25, 2023 5:41 pm
by 93_Clubman
If tank is original then 40 litres of fuel is 40kgs plus 20kgs for the HT sounds about right bearing in mind the original NA6 HTs were a bit lighter than later HTs. So if you're 60kgs then 1320kgs - 120kgs = 1200kgs.

Re: NA hardtop weight?

Posted: Sun Mar 26, 2023 8:21 am
by bruce
Thanks!

Re: NA hardtop weight?

Posted: Sun Mar 26, 2023 8:44 am
by rascal
93_Clubman wrote:If tank is original then 40 litres of fuel is 40kgs

Unleaded fuel is more like 0.73kg per litre (water is 1kg per 1L) so 40L fuel would be under 30kgs.

Sorry Bruce just made you 10kg fatter…. :D

Re: NA hardtop weight?

Posted: Sun Mar 26, 2023 12:55 pm
by bruce
I use premium and as it is dearer I expect it to be heavier!

Re: NA hardtop weight?

Posted: Mon Mar 27, 2023 7:15 am
by rascal
bruce wrote:I use premium and as it is dearer I expect it to be heavier!

It is, but only just.
Ulp=0.735, pulp=0.750

Re: NA hardtop weight?

Posted: Tue Mar 28, 2023 9:35 pm
by Jeo
Weighed mine many years ago shortly after painting, all new seals, etc. I remember clearly because I thought it was a suspiciously round number, but it was exactly 20kg according to my highly accurate bathroom scales.

Re: NA hardtop weight?

Posted: Wed Mar 29, 2023 8:14 am
by bruce
Thanks.

Re: NA hardtop weight?

Posted: Wed Mar 29, 2023 3:17 pm
by bruce
Jeo wrote:Weighed mine many years ago shortly after painting, all new seals, etc. I remember clearly because I thought it was a suspiciously round number, but it was exactly 20kg according to my highly accurate bathroom scales.


Jeo, was it difficult taking out the rear glass?

Re: NA hardtop weight?

Posted: Thu Mar 30, 2023 8:59 am
by Jeo
When I did it? No... but that was because I bought a second hand hardtop in fairly poor condition. Most of the seal had already perished to the point where it had fallen out on it's own. I reckon a light breeze would have removed the window for me.

Can't comment on a decent one sorry Bruce.

Re: NA hardtop weight?

Posted: Thu Mar 30, 2023 1:57 pm
by bruce
Thanks