Tintop & Cabby weight difference
Posted
#739627
(In Topic #88911)
Local Hero
Tintop & Cabby weight difference
just want to see how much weight i need to loose for the next track run
dub76 tintop 20v did 14.1
my cabby 20v did 14.6
is it down to the weight ? just couldnt keep up with him :cry:
Posted
Local Hero
it's still a very good time ben. if you want to reduce times into the 13's, i'd look more towards the diff and maybe gearing, rather than the engine
Posted
Local Hero
the gearbox ratios are an issue my 1st and 2nd are spot on but my 3rd and 4th need 16v ratios i reckon
going to get some slick tyres for the next trip
as for the roof its shrunk so much the air gets inside it and causes it to ballon
so new roof
slicks
gearbox rebuild
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Settled In
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Guest user
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Settled In
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Local Hero
el_sicko said
weight reduction. ive seen it done before but not sure what the effects on the drag are.
There's a direct relationship - up until air resistance becomes significant, which is probably around 100mph+. Ie every 1% weight loss, will give 1% better ET. Ben, you're a bit stuck with what you can remove if you're driving the car to-from, but you could leave this at home:
4x Door panels (but refit the winder handles)
Handles
Fittings for mirror internal adjustment
Rear seat
Parcel shelf
Speakers (probably in door cards?)
Stereo
Carpet
Underfelt soundproofing material
Handbrake trim surround
Gear lever gaiter
And then once at the event, remove these too:
Wing mirrors
Rear bumper
Passenger seat
Also do this:
Decrease front tyre pressures to 22psi
Increase rear tyre pressures to 40psi
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Posted
Local Hero
emm said
don't know how practical it is, but i wonder what improvements you would get from creating a smooth undertray. I can imagine the spare wheel well and rear lower panel aren't very good for are flow.
I'd say, not worth the hassle. It would be far easier to simply lower the car once you're at the event, with a GTI chin spoiler, you're going to prevent a lot of the air going underneath the car once its lowered 80mm or so.
Posted
Local Hero
going to look at maybe getting a 16v box and using the 8v 1st and 2nd
also slicks on the front if i can find some
i think i can also run a higher boost level for just 1/4 mile but would need to have major cool down periods before each run
but all said and done between mine and deans car the only difference is the weight and roof on the times i think
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Guest user
Posted
Local Hero
emm said
I would probably say its as worth while are removing the handbrake cover.
You need to remove that, to remove the carpet. No point putting it back in, chuck it into the crate of other parts!
Not saying I am obsessed with weight, but I noticed a 1" long sliver of insulation tape stuck to the floor, on Sunday, so I removed that too!
Posted
Guest user
Did you have All Bran in the morning as well? No point in carrying anything inside!!
Posted
Local Hero
going to t-cut the car later may loose a few pounds there
i should have gone to the loo earlier yesterday reckon that 5lb dump was lowered my times
deans best time was in rage after being hit in the pit lane
Posted
Life Member
Re: Tintop & Cabby weight difference
bens_cab said
probally one for dubboy so whats the weight of a 76 tintop and a 88 cab ?
just want to see how much weight i need to loose for the next track run
dub76 tintop 20v did 14.1
my cabby 20v did 14.6
is it down to the weight ? just couldnt keep up with him :cry:
Difficult to say with modified cars. The early cars are very light, you are looking at 750 kg for a small block. Big block cabs are around 940 kg.
Posted
Local Hero
the actuator was set at 7psi and the bleed valve adjusted to 14psi but when under load in 3rd the boost was dropping off to 7psi
just removed said item and adjusted wastegate to 14psi and it holds it now through every gear
typical i didnt see that yesterday but i had tunnel vision on the strip wasnt watching the boost gauge
Posted
Local Hero
92 Sportline in Flash Red, Standard **SOLD**
91 G60 Corrado in Aqua Blue pearl
91 Rallye Golf, Tornado Red, AMD tuned to 220bhp 227 flb torque 9j x16 Borbet B alloys
1985 B Alpine white mk2 Golf Gti
91 G60 Corrado in Aqua Blue pearl
91 Rallye Golf, Tornado Red, AMD tuned to 220bhp 227 flb torque 9j x16 Borbet B alloys
1985 B Alpine white mk2 Golf Gti
Posted
Local Hero
rebuild in progress....
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Local Hero
paul_c 14.4 consistant
bens_cab 14.6 not consistant
found a boost leak on mine so hope to do better next time
Posted
Local Hero
some do say theyre cars are quicker with it down, dunno meself!
i think for your first outin in the cab thats pretty damn good, youll get 13s next time.
rebuild in progress....
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