400S v 5000S or QV - weight difference

The QV engine probably weighs a little more. Some of the weight could be the exhaust, earlier cars tended to have a sport exhaust. Safety equipment like bumpers on the US version, wing no wing. The earliest Bravo wheels were made of magnesium, which does weigh less. The QV cars had a slightly fatter front tire, 225 vs 205.

 

It depends what car you are talking about, a Fuel-injected QV with all the ancillaries, cats, USA DOT bumpers (these weigh a veritable ton!), side skirts, and wing probably weighs 300 lbs more than a carbureted car without any of the above, so it mostly comes down to equipment.

 

This is the door tag on my 87 QVI
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LP400S drivers handbook lists it at 1200 kg (2640 lbs.)
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All of the mentioned 400S lowbody items contribute to less weight. There has been talk of the exterior panels being thinner and thinner lighter glass. Also, early cars lack a side impact bar in the doors.

 

From the web:

1,300.5 kg (2,867 lb) (LP400)
1,351 kg (2,978 lb) (LP400S)
1,488 kg (3,280 lb) (LP5000QV)

How accurate, who knows!

From my DD QV handbook, empty weight is mentioned as 1,490 kg, but this is wet with oil, cooling and full tank of petrol. The FI QV with all the additional engine kit and original federal bodywork weighs more.

R

 

I still have the old US bumpers in my basement. I would guess that alone is 75-100 pounds. Sometimes you never know if the factory weighed the car with or without the spare tire, tool kit, full or empty gas tanks.

 

Yeah I'd love to repurpose them into something useful...not a chance.

 

Very optimistic.

 

1200 is optimistic imo
the LP400 is the lightest countach

400S lowbody is sure lighter than a QV but the real difference needs to be checked in real life
i hope to weight an S2 and an S3 next year and hopefully find a qv or 5000s to compare

also i have to do the same with diablo

i weighed my 2004 stock murcielago (e-gear) with half tank, oil, etc.....1800 Kgs!
same result for my Maserati MC STRADALE

 

Weighing in the same configuration (oil, water, fuel) is the only good way to tell!

And I would guess that an early LP400 with many parts in Magnesium would be the lightest of them all.

 

QV. Euro. Maintenance book photo.
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5000S manual states the same mass @ 1490kg!

 

In the QV, holds 120L of petrol. Petrol is approx 740g per L, so comes in at . . just under 89KG.

 

Yes, those pesky owners of large tanked supercars caused all the shortages ! And if the owners of the LM002 joined in, there'll be no fuel for months!

 

interesting consumption on the Countach, 1500 kg, 420-470 hp 10-11 mpg, Pre computer controlled fuel managment and delivery Era, motto was rich mixture setting, do not want to burn a hole in the pistons, the flip side is ,the car runs a lot better in Florida than Loveland pass or Brenner.. (the reason for manual fuel mixture adjustments on small prop planes)my 21 C8 Corvette 500 hp 3800 lbs burns approx 50% less fuel than the Countach,

 

yes
early LP400 should be lightest of them all

 

I would estimate a 400s to 5000s is probably aroung 50kgs in favor of the former due to mag parts and being slightly lower

 

Here’s something from a few years back that I found.
Shows a 300lb difference between an S2 and DD.


Weighed a couple of Countachs today...


1980 LP400S S2 3,012 lbs

1/2 tank

no wing

Ansa Sport Exhaust


1981 LP400S S3 3,216 lbs.

1/2 tank

with wing

Box Exhaust


1986 LP5000S DD 3,311 lbs

1/2 tank

no wing

SS Exhaust


Brian