[E-Type] E-type weight


I wish someone out there who owns a 3.8L E-type either OTS or FHC
with access to a grain scale or truck weigh-in scale would help us
end this weight controversy once and for all.
Every road test I’ve had access to gives varying test weights, curb
weights and what have you. The total weight should include the
driver, fuel, coolant and lubricants. And if we’re going to use this
as a standard weight, we’ll have to add 112 pounds to an OTS or
deduct the same amount if a FHC is weighed. Also, if we want to apply
the quarter-mile time or speed in the horsepower formula, I should
think we wouldn’t want a full tank of gas in order to get the best
times. We could compromise here and do the weigh-in with, say, eight
gallons of fuel on board. Any takers?
Bob 64 3.8L FHC (Remember, Jags got heavier as they progressed
through the series)

Bob,

I’ll be getting the car corner weighted in a week or so, I’ll get
an accurate weight. My car is a completely stock '64
FHC (S/N 889791) (OK, I have aftermarket shocks, but
they should be about the same weight).

I’ll let you know…

Why add 112 lbs to the OTS and subtract from the FHC?

According to “Jaguar E Type Collector’s Guide”
(Autocar or Motor or other road tests)
3.8 OTS weighs 24 cwt = 2688 lbs
3.8 FHC weighs 24.1 cwt - 2699 lbs
difference: 11 lbs.

Interesting … 4.2 S1 OTS: 25.4 cwt = 2845 lbs – 157 lbs heavier.)

Fluid weight – “a pint’s a pound the world around” – (US or Imperial?)
2 lbs per quart, 8 lbs per gallon.
(According to manual’s capacities)
24 lbs oil(s)
38 lbs coolant
134 lbs fuel (full)--------------
196 lbs full

64 lbs fuel (8 gals fuel)
126 lbs with 8 gals.

Kerb weight of 3.8 FHC = 2699 + 126 = 2825 lbs. (2895 full)
2900 lbs is the kerb weight used in the R&T test, too.

Add 180 lbs for a driver …test weight = 3005, 3075 full.

(we can compare actual weights with this…)

But the R&T test I quoted gave the actual test weight on that day
which arrived at the figures given. We can only get less accurate
by doing this (unless we actually time the car we weigh).

Jerry

Jerry Mouton mailto:@mouton Laissez les bons temps
rouler!

----- Original Message -----
From: “Robert J. Richardson” rrichard@frognet.net
To: e-type@jag-lovers.org
Sent: Wednesday, August 22, 2001 9:14 PM
Subject: [E-Type] E-type weight


I wish someone out there who owns a 3.8L E-type either OTS or FHC
with access to a grain scale or truck weigh-in scale would help us
end this weight controversy once and for all.
Every road test I’ve had access to gives varying test weights, curb
weights and what have you. The total weight should include the
driver, fuel, coolant and lubricants. And if we’re going to use this
as a standard weight, we’ll have to add 112 pounds to an OTS or
deduct the same amount if a FHC is weighed. Also, if we want to apply
the quarter-mile time or speed in the horsepower formula, I should
think we wouldn’t want a full tank of gas in order to get the best
times. We could compromise here and do the weigh-in with, say, eight
gallons of fuel on board. Any takers?
Bob 64 3.8L FHC (Remember, Jags got heavier as they progressed
through the series)

A pint’s a pound when it’s water… gasoline has a ligher “specific
gravity” and if I remember correctly weighs about 7-1/2 pounds per gallon,
but don’t quote me… (that’s the reason water sinks to the bottom of fuel
tanks and rusts them out…)

–Harold

Harold Robertson
Redding, California, USA
68 FHC 2+2
71 Volvo 1800e
http://home.pacbell.net/p1800guy/

Jerry Mouton wrote:> Bob,

I’ll be getting the car corner weighted in a week or so, I’ll get
an accurate weight. My car is a completely stock '64
FHC (S/N 889791) (OK, I have aftermarket shocks, but
they should be about the same weight).

I’ll let you know…

Why add 112 lbs to the OTS and subtract from the FHC?

According to “Jaguar E Type Collector’s Guide”
(Autocar or Motor or other road tests)
3.8 OTS weighs 24 cwt = 2688 lbs
3.8 FHC weighs 24.1 cwt - 2699 lbs
difference: 11 lbs.

Interesting … 4.2 S1 OTS: 25.4 cwt = 2845 lbs – 157 lbs heavier.)

Fluid weight – “a pint’s a pound the world around” – (US or Imperial?)
2 lbs per quart, 8 lbs per gallon.
(According to manual’s capacities)
24 lbs oil(s)
38 lbs coolant
134 lbs fuel (full)

196 lbs full

64 lbs fuel (8 gals fuel)
126 lbs with 8 gals.

Kerb weight of 3.8 FHC = 2699 + 126 = 2825 lbs. (2895 full)
2900 lbs is the kerb weight used in the R&T test, too.

Add 180 lbs for a driver …test weight = 3005, 3075 full.

(we can compare actual weights with this…)

But the R&T test I quoted gave the actual test weight on that day
which arrived at the figures given. We can only get less accurate
by doing this (unless we actually time the car we weigh).

Jerry

Jerry Mouton mailto:jerry@moutons.org Laissez les bons temps
rouler!

----- Original Message -----
From: “Robert J. Richardson” rrichard@frognet.net
To: e-type@jag-lovers.org
Sent: Wednesday, August 22, 2001 9:14 PM
Subject: [E-Type] E-type weight


I wish someone out there who owns a 3.8L E-type either OTS or FHC
with access to a grain scale or truck weigh-in scale would help us
end this weight controversy once and for all.
Every road test I’ve had access to gives varying test weights, curb
weights and what have you. The total weight should include the
driver, fuel, coolant and lubricants. And if we’re going to use this
as a standard weight, we’ll have to add 112 pounds to an OTS or
deduct the same amount if a FHC is weighed. Also, if we want to apply
the quarter-mile time or speed in the horsepower formula, I should
think we wouldn’t want a full tank of gas in order to get the best
times. We could compromise here and do the weigh-in with, say, eight
gallons of fuel on board. Any takers?
Bob 64 3.8L FHC (Remember, Jags got heavier as they progressed
through the series)

In a message dated 8/23/01 2:13:22 AM Eastern Daylight Time,
p1800guy@pacbell.net writes:

A pint’s a pound when it’s water… gasoline has a ligher “specific
gravity” and if I remember correctly weighs about 7-1/2 pounds per gallon,
but don’t quote me…

A racer I know says 8 pounds, but 7.5 is probably a reasonable rule of thumb.

Regards,
Warren

If it helps, I weighed my 1965 OTS a few weeks ago.

It weighed 2888 pounds distributed as follows:

left front: 737 pounds
right front: 688 pounds
left rear: 771 pounds
right rear: 692 pounds

These weights were measured on the same calibrated, individual wheel scales
that we use for our measurements at Car and Driver. The car was fully
equipped as normally driven with the spare and tools fitted (though the radio
was temporarily removed). The fuel tank was full.

This condition is defined as curb weight. All of the weights that we publish
for road test cars are measured in this condition for a variety of practical
reasons.

We don’t include the driver’s weight because it can vary considerably. For
your performance calculations, you can easily add it.

We also use a full tank of fuel because this is a much easier condition to
replicate than some partial filling such as half a tank or eight gallons.
Moreover, we always test cars in this condition because fuel starvation can
be problem during skidpad tests and it avoids running dry during a test
session.

By the way, when using the formulas for calculating engine power, the one
that’s based on the terminal speed in the quarter-mile is far more accurate
because it is less dependent on launch variations which can be considerable.
We have found a factor of about 230 to be close in most cases.

Csaba Csere

I wish someone out there who owns a 3.8L E-type either OTS or FHC
with access to a grain scale or truck weigh-in scale would help us
end this weight controversy once and for all.
Every road test I’ve had access to gives varying test weights, curb
weights and what have you. The total weight should include the
driver, fuel, coolant and lubricants. And if we’re going to use this
as a standard weight, we’ll have to add 112 pounds to an OTS or
deduct the same amount if a FHC is weighed. Also, if we want to apply
the quarter-mile time or speed in the horsepower formula, I should
think we wouldn’t want a full tank of gas in order to get the best
times. We could compromise here and do the weigh-in with, say, eight
gallons of fuel on board. Any takers?
Bob 64 3.8L FHC (Remember, Jags got heavier as they progressed
through the series)

Harold,

You’re right – even less. I thought they would be closer,
but looking it up, one gallon of gasoline weighs 6.15 lbs.
(46.023 lbs/cu ft., 1 cu ft per 7.481 gallons)

That makes a full tank = 103 lbs, 8 gallons = 49 lbs.

adjusted kerb weights, 3.8 FHC, 8 gals fuel, 2810 lbs (2864 full)

Jerry

Jerry Mouton mailto:@mouton Laissez les bons temps
rouler!----- Original Message -----
From: “Harold Robertson” p1800guy@pacbell.net
To: e-type@jag-lovers.org
Sent: Wednesday, August 22, 2001 11:14 PM
Subject: Re: [E-Type] E-type weight

A pint’s a pound when it’s water… gasoline has a ligher “specific
gravity” and if I remember correctly weighs about 7-1/2 pounds per gallon,
but don’t quote me… (that’s the reason water sinks to the bottom of fuel
tanks and rusts them out…)

–Harold

Harold Robertson
Redding, California, USA
68 FHC 2+2
71 Volvo 1800e
http://home.pacbell.net/p1800guy/

Jerry Mouton wrote:

Bob,

I’ll be getting the car corner weighted in a week or so, I’ll get
an accurate weight. My car is a completely stock '64
FHC (S/N 889791) (OK, I have aftermarket shocks, but
they should be about the same weight).

I’ll let you know…

Why add 112 lbs to the OTS and subtract from the FHC?

According to “Jaguar E Type Collector’s Guide”
(Autocar or Motor or other road tests)
3.8 OTS weighs 24 cwt = 2688 lbs
3.8 FHC weighs 24.1 cwt - 2699 lbs
difference: 11 lbs.

Interesting … 4.2 S1 OTS: 25.4 cwt = 2845 lbs – 157 lbs heavier.)

Fluid weight – “a pint’s a pound the world around” – (US or Imperial?)
2 lbs per quart, 8 lbs per gallon.
(According to manual’s capacities)
24 lbs oil(s)
38 lbs coolant
134 lbs fuel (full)

196 lbs full

64 lbs fuel (8 gals fuel)
126 lbs with 8 gals.

Kerb weight of 3.8 FHC = 2699 + 126 = 2825 lbs. (2895 full)
2900 lbs is the kerb weight used in the R&T test, too.

Add 180 lbs for a driver …test weight = 3005, 3075 full.

(we can compare actual weights with this…)

But the R&T test I quoted gave the actual test weight on that day
which arrived at the figures given. We can only get less accurate
by doing this (unless we actually time the car we weigh).

Jerry

Jerry Mouton mailto:@mouton Laissez les bons temps
rouler!

----- Original Message -----
From: “Robert J. Richardson” rrichard@frognet.net
To: e-type@jag-lovers.org
Sent: Wednesday, August 22, 2001 9:14 PM
Subject: [E-Type] E-type weight


I wish someone out there who owns a 3.8L E-type either OTS or FHC
with access to a grain scale or truck weigh-in scale would help us
end this weight controversy once and for all.
Every road test I’ve had access to gives varying test weights, curb
weights and what have you. The total weight should include the
driver, fuel, coolant and lubricants. And if we’re going to use this
as a standard weight, we’ll have to add 112 pounds to an OTS or
deduct the same amount if a FHC is weighed. Also, if we want to apply
the quarter-mile time or speed in the horsepower formula, I should
think we wouldn’t want a full tank of gas in order to get the best
times. We could compromise here and do the weigh-in with, say, eight
gallons of fuel on board. Any takers?
Bob 64 3.8L FHC (Remember, Jags got heavier as they progressed
through the series)

Yup, for aircraft weight and ballance, we use 8 lbs per gallon, which
gives us a bit of a “fudge factor”.
LLoyd

Harold Robertson wrote:>

A pint’s a pound when it’s water… gasoline has a ligher “specific
gravity” and if I remember correctly weighs about 7-1/2 pounds per gallon,
but don’t quote me… (that’s the reason water sinks to the bottom of fuel
tanks and rusts them out…)

–Harold

Harold Robertson
Redding, California, USA
68 FHC 2+2
71 Volvo 1800e
http://home.pacbell.net/p1800guy/

Jerry Mouton wrote:

Bob,

I’ll be getting the car corner weighted in a week or so, I’ll get
an accurate weight. My car is a completely stock '64
FHC (S/N 889791) (OK, I have aftermarket shocks, but
they should be about the same weight).

I’ll let you know…

Why add 112 lbs to the OTS and subtract from the FHC?

According to “Jaguar E Type Collector’s Guide”
(Autocar or Motor or other road tests)
3.8 OTS weighs 24 cwt = 2688 lbs
3.8 FHC weighs 24.1 cwt - 2699 lbs
difference: 11 lbs.

Interesting … 4.2 S1 OTS: 25.4 cwt = 2845 lbs – 157 lbs heavier.)

Fluid weight – “a pint’s a pound the world around” – (US or Imperial?)
2 lbs per quart, 8 lbs per gallon.
(According to manual’s capacities)
24 lbs oil(s)
38 lbs coolant
134 lbs fuel (full)

196 lbs full

64 lbs fuel (8 gals fuel)
126 lbs with 8 gals.

Kerb weight of 3.8 FHC = 2699 + 126 = 2825 lbs. (2895 full)
2900 lbs is the kerb weight used in the R&T test, too.

Add 180 lbs for a driver …test weight = 3005, 3075 full.

(we can compare actual weights with this…)

But the R&T test I quoted gave the actual test weight on that day
which arrived at the figures given. We can only get less accurate
by doing this (unless we actually time the car we weigh).

Jerry

Jerry Mouton mailto:jerry@moutons.org Laissez les bons temps
rouler!

----- Original Message -----
From: “Robert J. Richardson” rrichard@frognet.net
To: e-type@jag-lovers.org
Sent: Wednesday, August 22, 2001 9:14 PM
Subject: [E-Type] E-type weight


I wish someone out there who owns a 3.8L E-type either OTS or FHC
with access to a grain scale or truck weigh-in scale would help us
end this weight controversy once and for all.
Every road test I’ve had access to gives varying test weights, curb
weights and what have you. The total weight should include the
driver, fuel, coolant and lubricants. And if we’re going to use this
as a standard weight, we’ll have to add 112 pounds to an OTS or
deduct the same amount if a FHC is weighed. Also, if we want to apply
the quarter-mile time or speed in the horsepower formula, I should
think we wouldn’t want a full tank of gas in order to get the best
times. We could compromise here and do the weigh-in with, say, eight
gallons of fuel on board. Any takers?
Bob 64 3.8L FHC (Remember, Jags got heavier as they progressed
through the series)