my mate has just brought a 1600 rally car that we will be converting into a circuit/hillclimb car. what spring rates are recomended? i'm guessing 250-300lb for the front

I used to run 375lb fronts with 800lb rears in my 1600.

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275 front
1100 rear.
But you must have the right shocks for the spring rates.
http://www.datsport.com/strut-dsk280R.html

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"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT

I'm running 300lb front and 1100lb rear

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1971 Datsun P510 SR20DET 276 rwkW
2005 Mercedes AMG E55 350 kW
1969 Datsun P510 L20B EFI 95 rwkW
1975 Ford XB Fairmont GS Wagon 179rwhp
1980 Escort Van SR20DET unfinished
2002 Suzuki GSX1300R Hayabusa 185hp

im running 275 in the front 1100 in the rear.
22mm adjustable front sway bar on the front
Still has a little too much understeer. Think it might be due to front bump steer though.

Feels stiff and corners level

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Circuit Race 1600 in the build

Front sway bar too stiff?

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1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
viewtopic.php?t=6579
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I'm running 300 in the front and 250 in the rear on coilovers but i think the rear is too soft

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mmm it is a blade adjustable bar and on the softest setting we still have understeer. The front has quite a lot of roll oversteer so it might be that.
What front camber is everyone running for 1600 track cars

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Circuit Race 1600 in the build

250 front
around 1000 rear as they are a progressive rate but range from 800 to 1100 (sold by Toperformance).

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Jason
1600 Historic Touring Car

thanx everyone for the input