Pavlo

I have a brand new set of SUbaru 4 pots with discs and pads to match, waiting to go on my Legacy. However, I am thinking of putting on a pair of wilwood vented discs 31.8mm thick, with alumnium bells, spacers in the caliper, and possibly a spacer to correct caliper postion.

Looks like Rally design do some universal bells for wilwood discs. The discs are 7.8m thicker as standard, so 7.8-8.0 spacers in calipers required, then it's a matter of fitting the caliper properly.

Anyone done anything like this?

Paul

Andy.F

Paul

Suggest you sell the Subaru 4 pots for x £s and use said x £s to buy Wilwood alloy calipers to match the discs Save yourself lots of Kgs in the process

AndrewC

Paul,

I'm not sure what your budget is, but have you considered the 335x32mm Godspeed disk kit? Sounds exactly like what you're planning.

Oh. Yeah and there's a group buy on at the mo'.

Andrew...

Pavlo

What I am trying to acheive is the best brakes for the least money, and fitting in 16" wheels would be nice.

I don't like the idea of the wilwood calipers, as they don't have dust shields, and this is an everyday car, I don't want to have to service the calipers every 3000 miles.

I picked up the 4 pots at a good price, and I would consider selling them if I can find a good brakes solution.

Princess 4 pots?

I like the idea of ally bells, and bigger disc with better venting and curved vanes (less chance of cracking). I know the subuaru calipers are heavy being steel, but they seem good otherwise.

My budget is about £500 tops, and only because I know I can do it for this much.

Paul

David_Wallis

I would be interested in seeing what you do with this...

David

Pavlo

I had a think (difficult I know) and so far these are my 2 options:

1: Mount the subaru caliper on the back of the hub carrier, thereby moving the cailper about 30mm inboard. Put spacers in the subaru caliper to allow the fitting of a, wait for it, 35mm thick disc, same diameter as stock.

2: Sell all my new Subaru 4 pot setup. Get a pair of recon 4 pot calipers that use mounting points closer together so I can mount them between the normal points on the hub carrier (similar to godspeed kit). Make sure the brackets move the caliper inboard to give enough room to mount a 310mm diameter, 32mm thick disc.

Depending on how much I can get for the 4 pots, option 2 is cheaper. I don't however know the pros/cons of the steel Girling caliper used by Godspeed over the stock subaru part.

Paul

Andy.F

Paul

One size to watch is the inset from the hub face to the steering arm. This limits how far in you can bring the disc. The standard disc is only 5mm from it so that's about as far in as you can go

Pavlo

What distance where?

From offering up the caliper and disc to the wheel, the closest clearance is the inside of the disc to the caliper, and is about 3mm.

The clearance on the outside of the caliper to the inside of the wheel is about 5mm.

I haven't put them on the car yet, but what distance do you mean?

Bear in mind the discs I am thinking of will have a much larger inside diameter than the 277mm discs.

Are you refering to clearance at full lock? Is it to the track rod arm (the arm that goes to the rack anyway)? Or the actual hub carrier (bit with bearings in)?

Paul

Andy.F

It is the steering arm, part of the hub casting, where the ball joint to the steering rack bolts through.
In case you were considering moving the discs inwards, there is no more clearance. So fitting a thicker disc will move the caliper out towards the wheel more.

Andy

Pavlo

Got you now.

So I may have to move to substantially bigger (diameter) discs to allow the bell to go around the steering arm.

Buwger.

It would have been nice to keep with 16" wheels.

Seeing as I am only after 8mm extra, I may be able to get away with offseting the wheel say 4mm, move the caliper out 2mm and run the disc 2mm closer to the steering arm /grind a bit off etc.

I think the 1.25" (31.8mm) thick discs look favorable.

I might get more wheel clearance with a different caliper too.

Paul

Andy.F

I'm using the 310 x 32 disc under a 16" wheel. With the Supalite calipers they fit between the original mounts. The caliper brackets and disc bells are being made up just now. I'll add pics once I get them finished.



Supalite caliper v std 2pot.....weight saving of 4kg per side




Wilwood 310x32 disc v OE disc....and it's lighter !



Andy

Andy.F

Got them from Rally Design. Calipers only £ 109 each, they have stainless steel pistons and anodised housings so they shouldn't require much maintenance. Once a year, when I change the fluid, will do it I would think ?

Yes they are the 48 vane discs £110 each, the 48 vane iron discs are designed to glow red without warping they were not sure about the 32 vane jobs as they are lighter duty.

I'm using Univ 25 bells with the inset adjusted to 26 mm. Home made brackets for the calipers.

Andy

Pavlo

I think I might have to do the same, and put the 4 pots up for sale. I was also looking at Rally Designs prices. I was considering getting the cheaper disc to start with, as the 48 vane ones would be a straight swap when I go to the track.

Did you get the Wilwood Polymatrix pads?

Paul

Andy.F

Yes, I'm trying the polymatrix A for the track

Floyd

iTrader: (9)

Andy

What about the lack of dust shield on the Willwood caliper? How do you service them, is it just a good clean?

What's the total cost of the set-up?

F

Floyd

iTrader: (9)

bttt

Andy.F

Floyd

The Wilwoods have stainless steel pistons in an anodised alloy housing so corrosion should not be a problem. It will just be like running a bike, they don't have '**** shields' I was hoping it's just a once a year strip and clean task, I'll do it when I change the fluid.
If they do need seals then they are very cheap anyway.

Total cost of Discs, Alloy bells, Calipers, Pads, 4x Stainless hoses and bolt kit was approx £700 + vat I made my own caliper brackets as Rally Design no longer make them. They will however sell you a 6 pot / 315mm disc kit complete for approx £ 1k

cheers

Andy

Andy.F

BTT fao David W

David_Wallis

NO NO NO NO...

I DONT NEED BIGGER BRAKES.... REPEAT I DONT NEED BIGGER BRAKES..

Argh..

Hmm ok maybe if I fit the nitrous then I will.. Suppose I should rebuild gearbox sorting the oil leak first and fit FMIC... Im with paul on this I have two sets of 16"s both with tyres on and also my set of slicks... Hence why I was thinking about machining the wheels

Any chance of pics of your adaptors andy? What are they made out of? does it need to be some fancy metal... metal is metal to me... steel or alloy

David

Andy.F

I don't have the digi camera just now and you know what my other pics are like Will get pics asap.
I made the brackets from 8mm stainless steel (cos I had some) I can probably 'find' some more but it will cost you a front entry flange for the intake manifold

David_Wallis

Lol...

Ill make you one up anyway... .do you wanting it drilling and tapping for the throttle body?

David

Andy.F

Yea, that would be great David Think I may try 2 Cossie intercoolers welded together, works out about the same volume as an EVO7's I/C......but then they're slow

David_Wallis

Ill see what I can do!

David

Pavlo

Andy,

what's wrong with the charge cooler setup?

Paul

Andy.F

Paul

I consider the charge cooler is excellent for fast road or drag race but think a front entry/ front mount I/C (with a system volume to surface area ratio as low as possible) may be better for extended full boost running at track days.

I'll never know until I try it out !! Life's too short to wait on David finishing his

Was thinking about fitting an 18g compressor wheel to my turbo, any idea where I would source one ??

Andy

ps what's this doing on wheels n tyres forum

dbasteve

Have you thought about using S/Hand Skyline GTR callipers.

Putting spacers in callipers without centre tie rods will increase flex in the calliper.

Steve

Pavlo

Okay i noticed a few things now.

Godspeed charge a fortune for discs and bells, and not good value in my opinion.

Wilwood is cheap in comparison, and probably as good if not better.

The subaru 4 pots leave minimum clearances everywhere. The outside of the caliper can't go out any further, the inside would need to move in 8mm.

You can't move the caliper in on the current mounting points, as they are mounted on the outside of the hub carrier.

If you wan't to use 16" wheels, you can't move the caliper out enough to use a 'normal' adaptor plate.

I can't see any reason why I can't rotate the caliper around the hub about 10degrees with a bracket, that way I can move them inboard the 8mm required too.

Sound sensible?

Edited: I found the details of the wilwood 6 pot kit, and fortunately it has a nice drawing showing offset dimensions.


Paul

[Edited by Pavlo - 7/8/2002 9:06:14 PM]

David_Wallis

Duplicate Post.

[Edited by David_Wallis - 7/9/2002 3:42:23 PM]

Pavlo

So when did you get these?

That's pretty much what I want to do, but use cheaper steel calipers, at least for now.

Discs look pretty damn good, plenty of surface area on the fins.

I take it they are the 48 fin ones, and not the 32 fins?

Willwood universal bells? Machined to fit hub etc?

4kg each side = extra 2.66hp worth of go.

Paul

[Edited by Pavlo - 7/10/2002 7:35:19 PM]