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Protech Coilovers


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#1 lokleung

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Posted 12 April 2019 - 01:11 PM

Planning to change to Protech coilovers, what spring suit for fast road and track day?
Anyone know the spring specs from huddersfield online?
My bilstein used 5 years and 2 it leak!!

#2 nicklouse

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Posted 12 April 2019 - 01:22 PM

Rubber dounuts from Minispares.



#3 DeadSquare

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Posted 12 April 2019 - 03:46 PM

I wouldn't dissuade you from fitting "Coilovers" to a full race track car, but if it is also to be used on the road.......................stick to rubbers



#4 Icey

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Posted 12 April 2019 - 08:19 PM

what spring suit for fast road and track day?


What's the split? If it's more road biased, don't bother with coil-overs you'll be sacrificing a lot for little gain.

#5 CMXCVIII

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Posted 13 April 2019 - 10:33 AM

 

what spring suit for fast road and track day?


What's the split? If it's more road biased, don't bother with coil-overs you'll be sacrificing a lot for little gain.

 

 

Surely there's no question at all about coil springs unless the car's only use is on smooth track tarmac ... and even then ...



#6 nicklouse

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Posted 13 April 2019 - 11:40 AM

 

what spring suit for fast road and track day?


What's the split? If it's more road biased, don't bother with coil-overs you'll be sacrificing a lot for little gain.

 

makes no diifference as all the "kits" out there are not fit for purpose. you end up with a falling rate spring so you need to add ARBs to bring back some rising rate to the suspension.  if it is a race car with correctly orientated springs than that is a different matter. and then you start out by weighing the corners so you can work out the rate you need.



#7 GraemeC

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Posted 13 April 2019 - 11:54 AM

Although I would agree that rubber cones would be best, you guys seem to be talking about cone replacement springs - not coil-overs as he has asked about.



#8 DeadSquare

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Posted 13 April 2019 - 03:30 PM

Although I would agree that rubber cones would be best, you guys seem to be talking about cone replacement springs - not coil-overs as he has asked about.

 

NO  WE  AREN'T

 

The air would be blue, if we were talking about cone replacement springs.



#9 Cooperman

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Posted 13 April 2019 - 05:17 PM

The big problems with coil-overs  are first of all, the springs are really for racing and are not the correct rising rate type for road use. A race spring has a very high initial rate to improve turn-in on a smooth track, but that is pretty useless on a normal road.

Secondly, the coil-overs mount on the dampers and the top damper mounting is not strong enough for such a configuration on a normal public road. It would need substantial modification to the top damper mounting area. Also, I have snapped a damper mounting pin on the top arm, and that is just with a SPAX damper on a rally car. How you could strengthen the pin to fit coil-overs and use the car on the road is anyone's guess.

Not something I would consider as the original rubber spring cone are absolutely right for the car.

But still vendors sell this coil-spring junk!



#10 nicklouse

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Posted 14 April 2019 - 03:51 PM

Although I would agree that rubber cones would be best, you guys seem to be talking about cone replacement springs - not coil-overs as he has asked about.

not at all. the replacement springs are even worse but for similar reasons and another big reason.






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