View Full Version : 300zx Brakes
Sorry to come back to this guys, but having to come off early from nearly every track session ive done due to brake fade, i really need the 300zx brakes.
The only thing is: Will I need to change from the standard teardrop 15" wheels?
Um, the other ONLY thing I need to know is if anyone else is unsure about the drilling extra holes in the disk? Sounds a bit dodgy, but I'm hoping to be persuaded otherwise. Is changing the hubs an option?
Paul_S13
03-06-2001, 14:13
You don't need to drill any holes into the disc, you only need to do that if you use
300zx discs, just use the discs from a post '92 200sx, they are the right size for the 300zx calipers and the same stud pattern
Are you in the UK? I ask because all of the U.S. 240sx have to use 300zx calipers AND discs, then you have to drill some more stud holes.
Ive done the 300ZX conversion and use 300ZX disks and have drilled holes. I did use the 280/22mm S13 size disks (they were also drilled and grooved) for a while but the plain 300ZX ones are much better as they are 30mm thick.
I recommend you use M1155 mintex pads on trackdays. Ive been using these for a while now and they last well and dont fade. Cost about £100 for a set though...
If you need any more advise mail me or post on the board
Hope that helps a bit
Jez
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http://www.users.totalise.co.uk/~jhorsham/200sx.jpg
Dirty S13 with a few mods
200bhp ish with suspension and brake mods for trackdays
Right. How did you make sure the holes were central? And do standard wheels fit over them? This is my main sticking point as ive just bought 4 new tyres.
Im sorry to say that the std 15" wheels won't fit over. Well mine didnt any way. Its not the diameter thats the problem is the width.
As for the holes - I used the old disk as a template. I but a bolt though one hole and lined up the large hub hole in the center. You need to be fairly acurate but not massively so. The centre hub hole keeps the disk on the hub in the middle - the studs just provide mounting points.
Hope that helps
Jez
SteveSadler
04-06-2001, 14:20
Le1gh,
u need to have the later 15' rims(7 spokes)for the 300 caliper to fit. Also, it has to be the earlier Aluminium type.
inf you've 17's then u can fit the l8tr either the earlier or later steel caliper
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Bayside Blue S13
Mild Mods
I reckon around about 240BHP.
I had the 7 spoke alloys (1992) and they didn't fit...
I think you may be able to get the 4-pots that take 22mm disks - maybe they'll fit under the std 15" wheels. My calipers are the ali 4-pots that take a 30mm disk.
Is that the steel calipers?
Can anyone definatly confirm/deny this? I dont want to buy and fit everything only to find my wheels wont fit! What about fitting spacers between the wheels and the hubs?
OK - I can confirm the following:
If you get the alloy 4-pot 300ZX which take a 30mm thick disk the 1992 7 spoke alloy wheels will not fit unless you use a 15mm spacer - which in my opinion is far too thick to be safe.
I currently use 16" wheels with a 5mm spacer.
Actual_Ben_Taylor
04-06-2001, 23:10
Go to the installs page on www.240sx.org (http://www.240sx.org) its got all the info on the 300zx swap.
Ben
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http://forums.evilnet.net/ubb/smilies/pc1.gif
Black '98 S14
Sorry Jez, but I fitted me alloy calipers off an L reg. import under my standard phase 2 rims with a 6mm spacer (needed 5mm) and used longer ford studs with nuts to match the new thread/pitch.
As far as I know, contrary to my posts some time ago, you can use either caliper. Paul has the UK spec calipers and I think Nathan has also.
As much as I'd like the 30mm discs, I dont like the thought of drilling more holes in the discs and weakening them. So, all of you guys out there who want the 300zx conversion, I'm currently persuing a supplier of the 30mm thick / 380mm diamater discs with just the 114.3 PCd required for the S13. Hopefully I will have some luck soon, as EBC have told me already that the discs would have to be ordered in a quantity of at least 100 for them to make them!!! That takes them out of the equation!
AP may be able to help - will let you know.
Matt
Exactly what I wanted to hear. So, let me get this straight:
Early or late calipers, with late 200sx disks, phase 2 wheels and a 6mm spacer fit perfectly.
Has anyone tried with the phase 1 alloys?
So are there 2 types of 7 spoke wheel? I've got the 1992 onwards style wheel (not the tear drop ones) and they dont fit without a 15mm spacer. I guess they must be different to Matt_S's somehow.
Oh dear... Back where I started.
Nathan_200sx
05-06-2001, 19:38
Yeah mat I have the UK vertion sitting behind 17's and there aint alot of space between wheel and caliper, about 3mm Pauls are even closer, just about slide a fag paper between them. I'll try and stick an old 15" wheel on the front and give you a guestimate of spacers needed. I feer it will be alot though. also the S14 calipers look exactley the same as the 300zx calipers, and arnt they running 16" wheels?
the Plot thickens.
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Nathan
Red S13 Mongoose, K&N T3 280ish BHP http://mysmilies.com/smilies/cwm30.gif
Empty bank account
I think there must be 2 two types of 4-pot aluminium caliper and 2 types of post 1992 7 spoke wheel or something...
I can post photos of my 15" wheel if you like - maybe Matts are different.
click here http://www.users.totalise.co.uk/~jhorsham
they're the ones DCP_0550.jpg to DCP_0554.jpg
you can see the strengthening "fins" on the inside of the std wheel. There's also a pic (DCP_0553.jpg) of my car with the 16"s on and the wheel only just clearing the caliper (the pic is a bit dark so you may need to fiddle with your monitor or something)
Matt_S are your 15"s different to mine?
Hi,
A couple of things......
Errrr, I'm chasing up 280mm discs, not 380 (oops!)
I may have read or seen on an american site that there are two different types of 15" seven spoke, but didn't think it occured over here. I know Norris says they cant be fitted under 15" wheels, but have met others who have done the same.
With me 17's, there's absolutely sheite loads of space between the front face of the caliper and the back edge of the wheel spokes- I'm sure I can almost get my hand in there!
Jez, cant check my wheels, as they're round Steves. Hopefully he'll reaad this and have a look for you.
We only came about finding that they'd go on by accidentthe. Steve was changing his pads and we thouht we'd put my calipers (for which I was waiting for 17's to be able to put on) on to see what they looked like. Steve offered up a teardrop (early wheel) and we saw we needed about 22mm spacer - too much me thinks!
However, we offered up my spare and there was only 5mm in it!
Got studs, nuts and spacers for about £25 and off we went - bingo! (not to by the way!!!)
Hope this helps
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Matt
'92 S13
1/4 mile mad!
Kristian
06-06-2001, 23:48
Just to help clear things up a little. The brakes on the S14 are the same as the 300ZX brakes as is the front suspension. you should be able to get discs from AP with 4 stud holes. Also I spoke to Norris designs anout fitting the calipers and he said that you can fit the calipers with any of the 200 15" rims but you do need spacers and longer studs. I asked about the safety and he said fine. Also if you are suffering from brake fade the 300 calipers will not help. you need pads. I use Ferodo DS2000 which are great. I know Jez uses mintex 1155(?) and says they are great too. I purchased his old 280mm discs and calipers and theyre great on the track with the ferodo pads. The 300 calipers merely give more even pad pressure and are probably more mechanically efficient and also allow to fit larger disks which will give greater stopping power but not necessarily greater fade resistance. hope this helps a little!
QUOTE]Originally posted by Matt_S:
Hi,
A couple of things......
Errrr, I'm chasing up 280mm discs, not 380 (oops!)
I may have read or seen on an american site that there are two different types of 15" seven spoke, but didn't think it occured over here. I know Norris says they cant be fitted under 15" wheels, but have met others who have done the same.
With me 17's, there's absolutely sheite loads of space between the front face of the caliper and the back edge of the wheel spokes- I'm sure I can almost get my hand in there!
Jez, cant check my wheels, as they're round Steves. Hopefully he'll reaad this and have a look for you.
We only came about finding that they'd go on by accidentthe. Steve was changing his pads and we thouht we'd put my calipers (for which I was waiting for 17's to be able to put on) on to see what they looked like. Steve offered up a teardrop (early wheel) and we saw we needed about 22mm spacer - too much me thinks!
However, we offered up my spare and there was only 5mm in it!
Got studs, nuts and spacers for about £25 and off we went - bingo! (not to by the way!!!)
Hope this helps
[/QUOTE]
Thanks Kristian,
Anyone managed to firm up the brake pedal? I'd imagine its spongy because of all the rubber hosing at the wheels.
Brake fluid make any difference?
Yes? No?
Nathan_200sx
07-06-2001, 13:37
Braided hoses will do the job, stop's the pipes from expanding especialy when hot. I think the only difference with synthetic fluid is that it has a higher boiling point, not 100% sure on that though.
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Nathan
Red S13 Mongoose, K&N T3 280ish BHP http://mysmilies.com/smilies/cwm30.gif
Empty bank account
Kristian
07-06-2001, 13:46
I've also noticed that the servo unit flexes a lot when the pedal is pressed. just get someone to press the pedal while you watch and youll see. think this might be the bulk head flexing though. Think this will also add to the spongy effect. i was thinking about fitting some kind of steady bar/ strut to prevent it. any ideas anyone???
Originally posted by Nathan_200sx:
Braided hoses will do the job, stop's the pipes from expanding especialy when hot. I think the only difference with synthetic fluid is that it has a higher boiling point, not 100% sure on that though.
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