Author Topic: Ledge's 240Z Track car  (Read 6403 times)

Offline Ledge

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Re: Ledge's 240Z Track car
« Reply #45 on: January 08, 2012, 07:08:37 PM »
HI
Thanks guys

Brabham  The car has a substantial cage in it so twist isn't a drama.
               sphincter flex on the other hand is a different matter LOL

Regards
Paul

Offline luvemfast

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Re: Ledge's 240Z Track car
« Reply #46 on: January 09, 2012, 01:25:18 PM »
Looks awesome, do you have any problems with chassis twist and how have you strengthened the chassis? Cheers. :)
Don't think it matters anyway.....
Not like its going to be pumping out much power anyway  ::)

Offline RAdelaideRatsun

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Re: Ledge's 240Z Track car
« Reply #47 on: January 18, 2012, 09:26:47 PM »
Looking fantastic Paul, will have to come over and see it in the flesh when it is finished..........oh and whats with the hammer, turbo massaging?...lol

Offline Ledge

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Re: Ledge's 240Z Track car
« Reply #48 on: January 27, 2012, 09:58:39 AM »
Hi All
In and hooked up ready for the Dyno
Hopefully next weekend

Regards
Paul

Offline GL240GTR

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Re: Ledge's 240Z Track car
« Reply #49 on: January 27, 2012, 11:31:15 AM »
Hi Paul, you have done a great job on this car. When I see builds like this I am quit envious of your time and dead action. Looking really good, will be fantastic to drive.


Online 260DET

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Re: Ledge's 240Z Track car
« Reply #50 on: January 27, 2012, 02:44:59 PM »
HI
Thanks guys

Brabham  The car has a substantial cage in it so twist isn't a drama.
               sphincter flex on the other hand is a different matter LOL

Regards
Paul

Don't take this as a negative comment but a cage by itself won't give chassis rigidity, the cage design has to be incorporated into the chassis design and the two integrated to form one structure. You probably realised this but some people do seem to think that a bare cage will solve there spaghetti chassis problems.

Offline Zedman240

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Re: Ledge's 240Z Track car
« Reply #51 on: January 27, 2012, 06:56:30 PM »
From memory that cage is tied into the body in quite a few places..whereas my half cage probably only prevents those cracks appearing where the lead joins are in the rear quarters.
HS30-00121 'early girl' .........Me love zeds long time..
RS30-15224 'older girl" in progress!
Breaks - Something that fails.
Brakes - Stop your car.
There - in  or  at  that  place  ( opposed  to  here).
Their - of, belonging to, made by, or done by them

Offline Ledge

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Re: Ledge's 240Z Track car
« Reply #52 on: January 28, 2012, 06:56:00 AM »
HI Guys
Yeah the cage is strut to strut with a million ties to the body,
Think i could put the jack under the front right and change the rear left tyre
its so rigid.
Can totally understand how a half cage would achieve nothing when it comes
to chassis strength.

I have been using the car for a while now with a stock RB25 so this is really just and
engine change. It was quick before with 195kwatw so add an extra 100 to that
and I'm sure i will need a bit more right foot control.

Next event for the car is Mt Alma Mile hill climb on 31st March and 1st April.
Will go do a practice day at Mallala before then to get used to the extra performance.

Regards
Paul

Offline peter mc

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Re: Ledge's 240Z Track car
« Reply #53 on: January 28, 2012, 07:33:23 AM »
Mate its very nice
that extra 100 might be more like 250kw more  ;D even on low boost

Offline Ledge

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Re: Ledge's 240Z Track car
« Reply #54 on: January 28, 2012, 07:53:27 AM »
HI Peter
I'm really not bothered by what it makes, We will be mucking around
with cams to give the most mid range, best torque curve so what ever
its peak power is is what it is.
As you would be well aware by some of the good things you have built
big peak power figures are all but useless in the real world.

Regards
Paul

Offline peter mc

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Re: Ledge's 240Z Track car
« Reply #55 on: January 28, 2012, 05:18:32 PM »
thats for shore but it will make lots more than the RB25 in the top end with your turbo combo  300kw at 16 psi

Offline Ledge

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Re: Ledge's 240Z Track car
« Reply #56 on: February 04, 2012, 01:31:49 PM »
HI Guys
Here is dyno print out with power and boost,
sacrificed top end for mid range and lumpy
idle  but i am really happy with the result

Regards
Paul

Offline Z

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Re: Ledge's 240Z Track car
« Reply #57 on: February 04, 2012, 02:33:58 PM »
Other than the dyno sheet being more than 10 years old thats awesome;)

Happy days!

Offline peter mc

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Re: Ledge's 240Z Track car
« Reply #58 on: February 04, 2012, 03:00:31 PM »
hehe looks like i was not to far off the mark 300+ 15 
looks like you would pick up mid if your boost was better setup, what kind of control are you using

Offline Ledge

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Re: Ledge's 240Z Track car
« Reply #59 on: February 05, 2012, 10:23:33 AM »
HI Peter
Yep your guess was better than mine.
i was thinking 280 but I'm not going to argue LOL
It has turbo smart eboost hooked up to the
tomei actuators and turbo smart blow off valve.

As it is now its good but i want to do some track driving
to iron out any flat spots

Regards
Paul

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Re: Ledge's 240Z Track car
« Reply #59 on: February 05, 2012, 10:23:33 AM »