big brake kit

[Lurch320i]

I have a set of r32 skyline calipers lying around.just wondering if anyone has fitted then to our e30s.Ive seen one build with them after searching for weeks but no details as i don't want to use the skyline disc and make that spacer.Ive looked at disc options and found that the 288mm disc from the xantia hdi 110 has four stud(even though it will still need drilling for 4100).has the same 66mm centerbore.similar offset to standard and is 28mm thick so could be an ideal candidate

any tips would be useful

thanks guys

[gromgsxr]

if they the 4pots they look a bit like the rx7 ones see here: https://sites.google.com/site/e30brakesolutions/

[Lurch320i]

Sorry i forgot to say yes they are 4 pot front and 2 pot rear.Ive seen so many builds with the rx7 calipers but the skyline calipers have the same thread for the brake line and a wider disc option.along with a good variety of pads from cheap everyday to full on race compounds

[Lurch320i]

I did my research and the skyline has a 25.4mm master cylinder (same as the 750 mc upgrade) so we could fit the 25mm mc to ours and it wouldn't effect brake bias as it is basically standard piston areas.but what im stuck on is rear disc options.has to be around 18mm thick to coincide with the caliper.similar offset and hat height to make the handbrake work.
Could copy the build Ive seen with a supra disc but needs the shoes to be modified with thicker material

Just wondering what people think.im going to get some discs this week and possibly mock up a bracket.could possibly make more if there was a demand

[Lurch320i]

I did my research and the skyline has a 25.4mm master cylinder (same as the 750 mc upgrade) so we could fit the 25mm mc to ours and it wouldn't effect brake bias as it is basically standard piston areas.but what im stuck on is rear disc options.has to be around 18mm thick to coincide with the caliper.similar offset and hat height to make the handbrake work.
Could copy the build Ive seen with a supra disc but needs the shoes to be modified with thicker material

Just wondering what people think.im going to get some discs this week and possibly mock up a bracket.could possibly make more if there was a demand

[DHFiS]

The problem I found when looking at 4 pot calipers is getting the wheel and tyre to clear both the caliper and the arch. I think the cheapest solution is to use the WMS setup.

[Lurch320i]

Yeah it probably will work out cheaper but i still want to do it for the challenge and experience.im not too fused about wheels as i have 4 different sets with various offsets
i don't really want to but if necessary i will run a small spacer.max of 5mm

[Lurch320i]

Noone got any ideas?

[e301988325i]

Noone got any ideas?

If you want the handbrake to work it has to be BMW discs, I think that rear vented discs from an E46 may be in that sort of size bracket.

Realistically you're making a real mongrel of a braking system so you'll have to do it all yourself.

280mm VW Corrado G60 discs on the front with the centre bored out 2mm and a 2mm wheel spacer gets you back to stock offset.

The same thread on the caliper is irrelevant, you can get lines made too suit whatever you need.

[Lurch320i]

Ok so if i got the e46 rear discs id need them redrilling unless i could buy blanks.Ive heard pros and cons to redrilling from 5stud to 4.with the overlap.will that be a problem?

i don't have a spare couple of hundred quid to spend on the wilwood brake kit otherwise i would buy it.and just had the idea after a full set of skyline calipers landed on my lap

what did you mean by "mongrel" as those brakes can stop a far heavier and more powerful skyline so why wouldn't they be ok for our cars.the master cylinder is the same size as the common 7 series upgrade so brake bias shouldn't be effected

Thanks for the reply though.its just getting me thinking about what else we can do as people already use other manufacturers parts so why not open the door to another one

[jmc330i]

Redrilling the discs from 5 to 4 stud isn't really an issue. Some of the holes will overlap and some slotted, but as long as the disc is centered on the hub, when the wheel is bolted up the clamping force will hold it all together.

By 'mongrel' I think Alex means you will have a real mix of brake parts.
By the time you have messed around trying to get all these bits to fit, you won't be far off the cost of a wilwood or WMS kit.

[Lurch320i]

Well so far the project owes me £40.that's all four calipers inc braided brake lines and i got a set of 288x28mm discs from an xantia for free thanks to the scrapyard i used to work at.
What if i got a set of e46 m3 front discs.i think they are 28mm wide too.will only be quality Bmw discs and Nissan calipers then.ill gladly share the bracket if anyone wanted to copy it.

Not meaning to slate the wilwood or wms kit by making my own as Ive heard so many good things about it but i think it will be an interesting upgrade as the skyline calipers are cheaper than the rx7 ones

[jmc330i]

I'm not sure you'll get away with 288mm discs under the 15" wheels, I think 280mm is pushing it for the 15"s. That's one advantage to the wilwood/wms kits.

What's the centre bore of the disc you have? You say above that it has the same centre bore at 66mm - it won't be as the E30, that's 57.1.
I believe E46 front discs need a spacer between the hub and disc due to the disc offset, which then causes wheel choice issues. And as I said above, once you start messing about getting custom bits made or buying them in, you won't be far off the cost of one of the kits.
Also don't forget to factor in the cost of rebuilding you're calipers and getting new discs. I'm not sure I'd put my trust in some scrapyard discs and £40 calipers without overhauling them first

I'm not knocking your idea or enthusiasm, a lot of people have made their own kits to good effect, but unless you can do any custom work, machining etc yourself, it won't be as cheap as you imagine.

Have a search on here for big brake kits, I remember some of the guys even posted up a costing of their work.

[Lurch320i]

The scrapyard discs are only to mock up where the caliper would sit to get an idea of bracket sizes etc.i would never dream fitting second hand brakes to a car.the rebuild kits are £15 for each caliper and new ebc pads are cheap.but id want ferrado pads or similar.

I thought where the wheel sits is 57.1mm but there is a step in the hub where the disc sits on and that is 66mm.even the brembo site where i spent many hours searching for compatible discs says the e30 disc has a 66mm bore.and i thought that people open up the corrado disc from 65 to 66mm.sorry if im wrong and ill go back to the drawing board
i was planning on using either my 17" alpina reps or a set of 16"bbs lm wheels i have so i wouldn't need to fit under the 15" bbs even though that's what i like about the wilwood/wms kit.

I can do most of the fab work myself but once Ive designed a bracket ill draw it in CAD and get a mate at a machine shop to make them with precision

[Lurch320i]

E30 disc
http://bremboaftermarket.com/En/Car_Dis ... aster=5290

Xantia disc
http://bremboaftermarket.com/En/Car_Dis ... aster=7161

[jmc330i]

I've read before people quoting the brembo sites and people saying its wrong!

Well the E30 is definitely 57.1 and there is no way a 9mm step on the hub!
There is a thread on here explaining why the VW disc needs opening out a little and even though I posted on it, I can't find it But from what I remember, the inner profile of the hub tapers in, the E30 disc has the matching taper, but the VW disc doesn't.


Sounds like you have the right contacts to get the work done - its not what, but who you know

Good luck with it and keep us posted

[Jozi]

I think he's right about the disc centrebore being different to the wheel, 9mm is only a radius of 4.5mm more. Nearly sure my spacers wouldnt fit on without a disc on the hub either, quick measurement with callipers would conclude this

[BadDave]

IIRC R33/R34 skyline calipers are pretty similar to E38 Brembo's and use the same pad.

IF the calipers are Brembo's and I think they are,then you'll have problems fitting anything less than a 302mm disk with those calipers.

I know coz I tried it quite a few years ago with 302x28mm disks and they sqeezed under a 16" rim with a high offset.It took a while till I found a thick enough1pc disk that had the correct offset,but I did manage to find a suitable one after several hours checking disk specs in the "bible" (Mintex book)

Standard master cylinder works fine with the 4 pots and E30 M3 one works fine with large pistoned 6 pots.

There's no need to change the rear unless it's a serious track car.

HTH

[Lurch320i]

Just googled "e30 front hub" to try and find a picture without a disc on and i found this

http://www.google.co.uk/search?hl=en&sa ... rSKTA#i=38

there is a little lip where the disc would sit.all it has to be is 4.5mm and the will make 9mm across the diameter.
Im going to the workshop at the weekend anyway so ill grab my spare struts and measure them.will also get some photos and mock up where everything will eventually sit

yeah that was my dads favorite saying "its not what you know its who you know and how you know them"

[DanThe]

Yeah the disc inner is 66mm, as Jozi says 4.5mm on the radius.

As for the taper I had these cut onto the 5mm spacers I used to get made to clear the steps left by using thinner discs. Gives me 6mm on the front and 10mm on the rear total extra track



It wont be cheap by the time you have finished, I changed the brakes on my chromie to 540i front and rear and it still cost £1000 or more and thats with mates rates/trade accounts, but I did have everything zinc plated and rebuilt...

[e301988325i]

By 'mongrel' I think Alex means you will have a real mix of brake parts.
By the time you have messed around trying to get all these bits to fit, you won't be far off the cost of a wilwood or WMS kit.

This.

A new 25mm M/C is £150, unless you're going s/hand on that as well?

I'm afraid that even once you get it together your brakes will still be old.

And s/hand discs, really? Take this from someone that's gone 280mm F&R on an E30. Mate, you can't afford it. Spend your time refurbishing, polishing pistons and pins to make the most of what you've got and fit yellow stuff pads & ATE blue fluid.

I'm sorry but financially skimping on brakes on a car that is a money pit (all E30's are) is the start of a big waste of your time.

[Lurch320i]

IIRC R33/R34 skyline calipers are pretty similar to E38 Brembo's and use the same pad.

IF the calipers are Brembo's and I think they are,then you'll have problems fitting anything less than a 302mm disk with those calipers.

I know coz I tried it quite a few years ago with 302x28mm disks and they sqeezed under a 16" rim with a high offset.It took a while till I found a thick enough1pc disk that had the correct offset,but I did manage to find a suitable one after several hours checking disk specs in the "bible" (Mintex book)

Standard master cylinder works fine with the 4 pots and E30 M3 one works fine with large pistoned 6 pots.

There's no need to change the rear unless it's a serious track car.

HTH

no they are not brembos from the r33/r34.they are sumitomo from an r32 gtst.they came on the r32 skyline.s15 silva and the z32 300zx.Same calipers as the Subaru impreza 4pots but different spacing between the lugs.use the same pads though as the scooby.
On the nissans they came with a 280x30mm disc so 288x28 should be ok

[jmc330i]

Sorry, I meant 4.5mm, been a long day today.

My bad, I didn't realise the taper was that big. It's been 5yrs since I last looked at a VW disc and even then I had it ready machined, so never actually measured it.

If its right, that disc could well be useful

[DanThe]

You can easily make a disc smaller on the diameter

[Lurch320i]

By 'mongrel' I think Alex means you will have a real mix of brake parts.
By the time you have messed around trying to get all these bits to fit, you won't be far off the cost of a wilwood or WMS kit.

This.

A new 25mm M/C is £150, unless you're going s/hand on that as well?

I'm afraid that even once you get it together your brakes will still be old.

And s/hand discs, really? Take this from someone that's gone 280mm F&R on an E30. Mate, you can't afford it. Spend your time refurbishing, polishing pistons and pins to make the most of what you've got and fit yellow stuff pads & ATE blue fluid.

I'm sorry but financially skimping on brakes on a car that is a money pit (all E30's are) is the start of a big waste of your time.

sorry but will people please read before commenting.im not going to use second hand discs etc.the discs are only for mock up and the calipers are stripped ready to be rebuilt with new pistons.seals.pins etc.just before i spent the money on the build kits i was gonna ask on here for advice and to see what people thought.

I know its not going to be mega cheap but i wanted to do it for the experience and challenge to do something different to my car

i would never cheap ought on something like brakes!! That's like saying "lets put the used oil from a scrap car in our engines when we do a service"
Its a waste of time and pointless

thanks for the pics Dan.they look amazing

[maggspower]

IIRC R33/R34 skyline calipers are pretty similar to E38 Brembo's and use the same pad.

IF the calipers are Brembo's and I think they are,then you'll have problems fitting anything less than a 302mm disk with those calipers.

I know coz I tried it quite a few years ago with 302x28mm disks and they sqeezed under a 16" rim with a high offset.It took a while till I found a thick enough1pc disk that had the correct offset,but I did manage to find a suitable one after several hours checking disk specs in the "bible" (Mintex book)

Standard master cylinder works fine with the 4 pots and E30 M3 one works fine with large pistoned 6 pots.

There's no need to change the rear unless it's a serious track car.

HTH

Dave, what discs did you use? Audi 312mm turned down? Voyager? I have some e38 calipers staring at me at the workshop

They do look rather large, so I need to get the tape measure out. But a head start would be nice. Cheers.

[Lurch320i]

Ive read somewhere that the voyager ones have near perfect offset.think it was in the wiki page

i was going to go bigger discs (300mm+) but my standard brakes performed fantastically with yellowstuff pads at the nurburgring so im only wanting a small upgrade for when i finish the turbo build.and my logic says if they are good enough for heavier skylines that's good enough for me

[Jimbob]

What pads are people running on their E38 Brembo's?

Lurch I read somewhere the Honda S2000 discs have been used with the R32 calipers.

[Lurch320i]

I saw that build too thanks jimbob. But from the photos it looks like the disc doesn't fit on the hub and is prob a bit too big for what i want.i still want my bbs lm's to fit

cheers though
lee

[maggspower]

What pads are people running on their E38 Brembo's?

Lurch I read somewhere the Honda S2000 discs have been used with the R32 calipers.

I would be starting with standard ones, remember if you start using performance pads you are going to have issues getting heat in to them to get them up to optimum operating temp. They are designed to stop a much heavier more powerful car.

[Lurch320i]

That's exactly what i was going to do.have standard pads and work up till i was happy with the stopping power

[Lurch320i]

What do people use for the brackets?as in grades of steel?aluminium? And where's best to get it from

[maggspower]

I would have thought a nice thick piece T6 grade aluminium plate would do it. Its easy to work too.

[Lurch320i]

Excellent thanks.is that something my mate at the machine shop would have or should i source some and where from

[maggspower]

Excellent thanks.is that something my mate at the machine shop would have or should i source some and where from

I would have thought a machine shop would have some hanging around

I have found, if you are stuck, people sell off cuts on ebay which are handy. Check the prices as some people take the pi55 though.