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  #1 (permalink)  
Old 04-04-2011, 04:51 PM
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Default Weigh in

Due to circumstances I wasn't present during the registration process of my Cobra, hence I didn't know what it actually weighed as QT don't include this data on the rego.

So I wandered down to the local weighbridge yesterday where the guys were only too happy to oblige:

1140kg total with full fuel (70 litres say 52kg [0.75kg/l])
540kg front
620kg rear

Was a bit surprised that the rear was heavier. Might weigh again with less fuel and see how the split changes as the tank is beyond the rear axle line.

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Old 04-04-2011, 05:42 PM
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Geoff, what rear axle are you running ?
Rog
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Old 04-04-2011, 05:49 PM
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Yeah Harrisons are usually 50/50 with an iron block V8 up front.... Alloy engines are obviously lighter..... My DRB is the same, 1285kg with me in it and half a tank of fuel, 642 front and rear... No alloy engine..
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Old 04-04-2011, 06:10 PM
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Quote:
Originally Posted by Rog246 View Post
Geoff, what rear axle are you running ?
Rog
Rog,

Commodore IRS mechanicals with fabricated arms and uprights.

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Old 04-04-2011, 06:52 PM
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Originally Posted by Towmaster View Post
Yeah Harrisons are usually 50/50 with an iron block V8 up front.... Alloy engines are obviously lighter..... My DRB is the same, 1285kg with me in it and half a tank of fuel, 642 front and rear... No alloy engine..
Good info Ash, thanks.

Based on my favourite scales my svelte like figure would bring the max up to 1235kg.

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Old 04-04-2011, 07:07 PM
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Here is a list of WA based cars and their weight for comparison.
Mostly all with iron blocks.

Don't know if the weights include the driver though.

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Old 04-04-2011, 07:15 PM
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Interesting...only 3 of 14 are nose heavy. One is running a LS engine perhaps others have aftermarket alloy blocks.

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Old 04-04-2011, 07:23 PM
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Nope, all iron far as I know.
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Old 04-04-2011, 07:32 PM
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Well it'll get interesting with my Harrison when I finally get it done. Them 5.4 iron block Fords ain't light, and they sure are big Mother's ! I think it is actually wider than a FE block
But hey like some say 'them with only 1 cam are so miserable-they wouldn't shout if a shark bit'em '
That said $1300 odd is a bit to pay for a bits steel with lumps on 'em.
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Old 04-04-2011, 07:38 PM
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Quote:
Originally Posted by Rog246 View Post
Well it'll get interesting with my Harrison when I finally get it done. Them 5.4 iron block Fords ain't light, and they sure are big Mother's ! I think it is actually wider than a FE block
But hey like some say 'them with only 1 cam are so miserable-they wouldn't shout if a shark bit'em '
That said $1300 odd is a bit to pay for a bits steel with lumps on 'em.
They're big mothers's allrighty.
I'm told most blokes runnin em put their rear wheels on the front and the skinny ones on the back.

Then fill the front tyres with helium.

They sorta go alright then.
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Last edited by Rebel1; 04-04-2011 at 07:51 PM..
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Old 04-04-2011, 07:44 PM
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Nope, all iron far as I know.
Curiouser and curiouser....

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Old 04-04-2011, 08:54 PM
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They're big mothers's allrighty.
I'm told most blokes runnin em put their rear wheels on the front and the skinny ones on the back.

Then fill the front tyres with helium.

They sorta go alright then.
already saving the shiekls for an alloy block, should save about 45kg's across the front axle apparently.
as far as size goes I reckon I got bragging rights with ' mine's bigger'er than yours mate
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Old 04-04-2011, 09:50 PM
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Quote:
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already saving the shiekls for an alloy block, should save about 45kg's across the front axle apparently.
Save ya money, they go real hard as it is. Remember a lot of the original cars had a bluddy great heavy 427so in em.

Quote:
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as far as size goes I reckon I got bragging rights with ' mine's bigger'er than yours mate
Damn, you been chattin to my first wife?. She reckons if mine was 2" shorter I'd have a 1" hole in my gut.
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Old 04-04-2011, 10:14 PM
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Save ya money, they go real hard as it is. Remember a lot of the original cars had a bluddy great heavy 427so in em.



Damn, you been chattin to my first wife?. She reckons if mine was 2" shorter I'd have a 1" hole in my gut.
Why would you want to shorten your car by 2" ? Ohh....!!
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Old 04-04-2011, 11:18 PM
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Quote:
Originally Posted by Rog246 View Post
already saving the shiekls for an alloy block, should save about 45kg's across the front axle apparently.
45kg is a signficant saving, goes to show how large that block is.

On a 427FE it is only around a 27kg saving. I looked at the weight saving between an iron 427 & an alloy 427 block, both engines with alloy heads.

Just did a quick google search:

329kg for 429/460 & 351 Clevelands could be more. I assume iron heads.

236kg for an iron 427FE with alloy heads. 209kg with alloy block.

193kg 302w with alloy heads.

189kg for an LS3.

Interesting.
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Old 04-05-2011, 12:12 AM
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Weighed mine last week -- 644 front, 732 rear with me (105) on board and half a tank of fuel. So that's 1376 kgs under normal running conditions. We're no lightweights but we're comfortable!
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Old 04-05-2011, 12:13 AM
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Craig will probably make up the difference with a blower at some stage - or not. But 45 kgs means I don't have to diet as hard as I might
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Old 04-05-2011, 12:15 AM
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45KG difference going from Iron to Aluminum??!! I didn't think it would be as much as that. Must be a heavy wall high nickle content on their Iron blocks.

There's probably cheaper and easier ways to remove weight. Probably easier to just add HP.

My CR weighed in at 1060KG at rego with a half tank of fuel. Not sure on the front rear split. I got it through rego with no windscreen so probably saved a few KG there with out all the stuff that goes with it i.e wipers, heater etc.

It's got a windscreen and wipers now but I've removed a heap of weight from the rear by making tubular rear arms. It'll be interesting to see what it weighs again when it's all done.

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Old 04-05-2011, 12:23 AM
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There's probably cheaper and easier ways to remove weight. Probably easier to just add HP.
Ahhh...the 750HP school of thought.
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Old 04-05-2011, 12:29 AM
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Quote:
Originally Posted by 400TT View Post
45kg is a signficant saving, goes to show how large that block is.

On a 427FE it is only around a 27kg saving. I looked at the weight saving between an iron 427 & an alloy 427 block, both engines with alloy heads.

Just did a quick google search:

329kg for 429/460 & 351 Clevelands could be more. I assume iron heads.

236kg for an iron 427FE with alloy heads. 209kg with alloy block.

193kg 302w with alloy heads.

189kg for an LS3.

Interesting.
The last two figures are interesting from my point of view - only 4kgs. Any data on the Ford Coyote weight?
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