In fairness to the original issue from the OP....working on cars all day long i see of lot of flaky paint on springs all the time....every now n then some springs seems to be great for ages, but imo with all the salt etc on our road a bit of paint flaking is inevitable somewhere along the line

 

I had a set of BC's on my Blobeye, with camber adjustable rear top mounts, and they were noisy at the rear, knocking and rattling etc..

However, the coil overs I had on before the BC's, also knocked from the rear.

I then took the BC's off my Blob, and fitted them to my classic type R with noltec top mounts, and they were quiet as a mouse and brilliant, enabling me to win this years Grudgement series.

I'm not sure what that shows, or says about the BC's, but I found it interesting non the less.

 

Apex
Unit 4D
Wharfedale Road
Bradford
BD4 6SG

It wont be the Noltec mounts that stopped the noise, youll have fitted those to attach the GDB rear struts to the Classic shell I assume. Out of interest why didnt you go for BC Racing Classic top mounts? In case they were the cause of the noises?

As I said previously, the 2000- Imprezas transmit noise through the rear strut due to the basic design of the rear suspension. We havent had to produce the OE style rear top mounts for the Classics as they dont suffer from the same problem.

We have four types of rear top mounts for the New Age Imprezas, aluminium plate rubber centre, aluminium plate rose jointed centre, aluminium plate rose jonted centre camber adjustable, OE style rubber. Only the OE style rubber mount eliminates knocking with coilovers despite issues with the original rear dampers knocking with the same design top mount. Which is odd.

 

I would love to remove mine and send them your way Bren but like John i can not take the car of the road, my Mrs uses it everyday.

 

Like you say, I only used the Noltec mounts in order to fit the GDB strut to the GC8 chassis, and I only used them because I had a set here.

I took the BC's off my blob because the car was off the road, and I needed some suspension on the type R quick smart and free.

I'm not saying the top mounts were the cause, just trying to give as much info and feedback for you.

I would have no problem or hesitation running BC's again on a classic, and I will be shortly needing some coilovers for my blob, once I get further than this..

https://www.scoobynet.com/628617-wid...l#post10324197

and I will be looking at BC's.

 

I appreciate the feedback, its useful to have the extra info to verify existing thinking, thankyou

 

We might be able to diagnose the issue over the phone. At the very least we will be able to give you some pointers.

Car looks(ed) great, Ive only skimmed through but loving the attention to detail Ive removed any spurious holes in the engine bay of my S14, looks so much neater.

 

I've had my coilovers on for a good few months and there still look new, very pleased with them have had a small issue with knocking but bren and the guys sorted it

It's hard work but keeping them cleaned regular helps

I found this link to preload if it helps anyone

http://mc8tdi0ripmbpds25eboaupdulrit...oken=251820033

I'm going to take my wheels of again soon to clean and regrese my coilovers quick question about preload when u take the top nut up to spring it says untill it holds spring, how much are we saying just untill it touches spring?

 

I must confirm that the conditions in which the car is used is not a contibuting factor, it wasn't used during the adverse weather of last winter. The reason would appear to be a paint spec. which has little flexibility.
I've no problem in giving the springs a squirt of Waxoyl!

I must also confirm that so far, the units themselves are fine with no strange noises etc. and feel a little embarassed that the 'flaky paint' post has fuelled discussion on other issues. Apologies to Bren for this and I await the results of his talks with BC

JohnD

 

Whats important here is that bren is on top of the job, i'm sure they have sold hundreds of sets and by the law of averages there will always be those that have some problems especialy since they are being DIY fitted and some of the vehicles have an inherant problem which is well documented.

Hats off to bren and his team for trying to resolve the issue, i'm sure some of the larger manufacturers of coilovers would not give a to$$ and tell you to purchase new or charge a fortune for the pleasure of having your problem resolved

And no i don't have a set or know bren.

 

Thanks for your kind words

We actually sell hundreds of sets per month, over the years we have sold tens of thousands.

Just yesterday I was chatting to Dan, the editor of Japanese Performance. He was saying how he keeps noticing that feature car after feature car is running on BC Racing coilovers. Theyre extremely popular and to be fair theres good reason for that

The factory have already replied. They are going to speak to the production manager in the spring factory about the current processes and what options they have to improve durability of the finish. The actual springs are made to extremely tight tolorences.

An independent customer reviewed a set of our coilovers including a spring test and reported back that the 5kg.mm front spring came in at 4.9635 kg/mm and the 4kg.mm rear came in at 3.9414 kg/mm.

I also cannot remember ever having a customer report a snapped spring, not in 8 years of selling products from this factory. Thats a lot of winters. That doesnt mean we havent had a snapped spring, we turnover a fair volume of product here and I have nothing to do with sales etc so I might have missed one. However I do try to stick my nose into any reported faults to keep on top of any issues that need addressing and snapped springs just dont arise.

So theyre there to a large extent, I just want to see what we can do about the durability of the finish.

If there are any other valid comments of feedback in terms of improving the kits further then Im all ears

 

The factory have said that they believe that OEM springs are EPD treated and are still looking into it.

Talking about springs, we havent had any BC Racing springs snap so this thread suprised me:

https://www.scoobynet.com/scoobynet-...oken-asts.html

Our springs are £30 a pop btw.

Relates interestingly to the title, dont you think?