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BC Coilovers Query - What preload and height do you have?


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#1 Stevearcade

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Posted 16 February 2017 - 12:47 PM

Hello fellas,

 

I've taken the plunge and ordered some BC coilovers for the tourer (my OEM shocks are knackered!). I'm rather excited :D , but also a bit in the dark on preload settings and ride height. I've watched some videos and I'm pretty confident in adjusting them once they're fitted, but I'd like to set them up as close to what they need to be before handing them over to the mechanic.

 

The shop selling them recommended between 3-5mm preload, so I thought I'd set 4mm preload to start with, however was curious about what any of you guys might be running. I also have no idea what height to set as far as length between the upper and lower locking nuts (hopefully I've explained that right?).

 

Anyone running BC BR-range coilovers? If so, how much preload did you set and what length do you have between upper and lower locking nuts? If you can't remember exactly, a close estimate is fine. I'm just trying to get a better idea on things.

 

Cheers lads


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#2 Goodluckmonkey

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Posted 16 February 2017 - 01:35 PM

The value you want is going to be the stactic sag (the change in travel from where the suspension's fully extended to where it sits when it's on its wheels properly.)

Fine adjustment's done through changing the preload, but it's mostly down to the weight of the spring.

Penny to a pound the spring rate will probably be wrong for a road application as most coil overs are, so really the preload value you apply becomes arbitrary.
Gen 7 Pre-Facelift CDTI Tourer
Premier Tuning stage 2 map / EGR Delete
'09 N22A2 Civic motor / Accord 5 speed / Stock LUK Clutch and DMF
8.5x19 ET42 / 9.5x19 ET45 BBS LM fakes (225/35 and 245/35 Toyo's)
-35mm Apex Springs
Avg Consumption currently @ 44.5mpg

#3 Andyjdmteg

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Posted 16 February 2017 - 04:29 PM

Crikey Steve your having an expensive time at the minute what with the clutch as well!
Take it the standard shocks are leaking ?

#4 Stevearcade

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Posted 16 February 2017 - 05:33 PM

The standard shocks aren't leaking (at least I don't think they are :lol:), they're just rattly and crashy and generally very bouncy. They're no longer doing their job at all. I was looking to replace the shocks, but found the shocks I was looking at (both Koni and/or Bilstein) seem to have gone up in price since I last looked (perhaps because of the falling sterling). It meant I was looking at excess of £500 for new shocks. I stumbled upon some discounted BC coilovers at DC Performance. The price difference was marginal, considering the gains of coil overs that include front camber adjustment and fully adjustable spring load, dampening and ride height, so I took the plunge.

 

At Christmas Santa brought me some spending money to put towards some new suspension parts anyway, so it's about time I got round to spending it  ;)

 

As for the clutch. Whilst I'm pretty confident it's going to go, it's not gone yet. I'm taking it easy and keeping an eye out for another slip or two. As soon as I spot it getting worse, I'll act. But from my reading up and asking around, I'll be sticking with an OEM clutch, so it's pretty straight forward.


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#5 brett

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Posted 16 February 2017 - 08:05 PM

Steve I'm sure Tomas is running BC coil overs so might be worth having a chat
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#6 ukcl9

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Posted 16 February 2017 - 09:22 PM

Camber cant be adjusted on the coilovers as we have double wish bone suspension
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k20/k24 reflasher.Test ECU available.Click on the reflash thread
http://typeaccord.co...remap-test-ecu/

#7 Stevearcade

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Posted 16 February 2017 - 10:24 PM

These have top camber adjustments, so some tweaks can be made from the top.


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#8 Goodluckmonkey

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Posted 16 February 2017 - 10:32 PM

But, as Ukcl9 says, the hub is located by the upper and lower arms.
Changing the shock angle will have no effect.

If we had a mcpherson strut setup it would, utility the honda's a little more sophisticated.

Camber can only be changed by altering g the lengths of the control arms relative to each other.

Edited by Goodluckmonkey, 16 February 2017 - 10:34 PM.

Gen 7 Pre-Facelift CDTI Tourer
Premier Tuning stage 2 map / EGR Delete
'09 N22A2 Civic motor / Accord 5 speed / Stock LUK Clutch and DMF
8.5x19 ET42 / 9.5x19 ET45 BBS LM fakes (225/35 and 245/35 Toyo's)
-35mm Apex Springs
Avg Consumption currently @ 44.5mpg

#9 Stevearcade

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Posted 16 February 2017 - 10:59 PM

Fair enough. It should come in handy should I look into camber upgrades in the future.


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#10 rust

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Posted 16 February 2017 - 11:47 PM

im using BC on my rx7 and its not bad but using only as im a trader with discount, on my CN2 im running on Tein Flex Z and i love them even went to nurbergring with it too and its done the job very well. 


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#11 Stevearcade

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Posted 17 February 2017 - 12:07 AM

Yeah, these were discounted, I couldn't stretch to Teins with my budget. Especially on the tourer. It's generally harder to come by options for the Tourer and they tend to be more expensive than the saloon, frustratingly.


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#12 Burbleboy

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Posted 20 February 2017 - 09:14 AM

I have BC coilovers on mine. I ended up having mine set at 2mm preload to try and eradicate the banging noise from the nearside (front and rear).

Swopped the rear coilovers from nearside to offside....still banging there! Sent the nearside front and rear back to BC UK for checks...came back ok.

My car must be a frankenstein vehicle
If you wanna go way low...you'd better be prepared....

#13 Stevearcade

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Posted 20 February 2017 - 07:38 PM

Hmmm, strange. So are you still on BCs or have you changed to something else?


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#14 Burbleboy

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Posted 20 February 2017 - 07:59 PM

Hmmm, strange. So are you still on BCs or have you changed to something else?



Still on BC's as there just a year old now. Not going to throw away the money on a new set!
If you wanna go way low...you'd better be prepared....

#15 Stevearcade

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Posted 20 February 2017 - 08:11 PM

Did you get to the bottom of the knocking? Is it still there since you've refitted them after they came back from BC?


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#16 Burbleboy

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Posted 20 February 2017 - 08:33 PM

Did you get to the bottom of the knocking? Is it still there since you've refitted them after they came back from BC?


Ive had 4 different mechanics/companies check it out and no fault found. All the suspension arms are new (adjustable) and everything is mint underneath. Problem was still there when shocks came back from BC.

One of lifes little mysteries. Wont be buying BC again though as i still think the shockers are causing it (BC only test them on full soft and not different settings bizarrely)

Having said that when i swoppes the n/s/r shocker over to o/s.....noise still at n/s. But slight banging is now both rear which points to shockers. But BC have checked em :(
If you wanna go way low...you'd better be prepared....

#17 Stevearcade

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Posted 20 February 2017 - 08:45 PM

Did your mechanic fit them correctly? For the rear, is the shock and spring separate like on the tourer (i.e. not a coil over), meaning you retain the stock top rubber to use with the trailing arm?


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#18 Stevearcade

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Posted 20 February 2017 - 08:46 PM

If I'm not making myself clear here, see this video after about 7 minutes

 


My CM2 - Cold Air Intake with K&N Filter, Custom 2.5" Stainless Steel Exhaust, Reflashed ECU, Custom Made 8J Steelies from Extreme Offset, BC Racing Coilovers, Short Shifter, Type-R Gear Knob, XCarLink iPod Interface, Interior & Exterior LED Bulb Conversion, Wind Deflectors, Yellow Fog Lamps, JDM size plates, Type S Grill (with blacked out chrome), Front & Rear Type S Skirts.


#19 Burbleboy

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Posted 20 February 2017 - 09:15 PM

No mate. Nothing like that video. All shock and spring are one. Mechanic fitted them correctly. Two of my mates are Mercedes-Benz technicians and both had removed and refitted them. (original fitment and when sent back to BC and then when we swopped sides)

Nothing to do with fitment and i spent £200 getting the ride height and pre load set and tracking done so all set up correctly.

I have gave up trying to find the issue and being frustrated. I just drive it and enjoy it now as i have done everything i can.
If you wanna go way low...you'd better be prepared....

#20 Goodluckmonkey

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Posted 20 February 2017 - 09:29 PM

Have you tried them with moregards preload to check that it's not the spring banging g?
Gen 7 Pre-Facelift CDTI Tourer
Premier Tuning stage 2 map / EGR Delete
'09 N22A2 Civic motor / Accord 5 speed / Stock LUK Clutch and DMF
8.5x19 ET42 / 9.5x19 ET45 BBS LM fakes (225/35 and 245/35 Toyo's)
-35mm Apex Springs
Avg Consumption currently @ 44.5mpg