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Mr30 - Easy Brake Conversions?

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Daewoo Enthusiast

Daewoo

Posted
Posted

Remembering that all my mods need to cost me almost nothing to stay within the spirit of the racing.

Is there such a thing as easy brake conversions? I was hoping that I could just swap over R31 Skyline stuff, but it doesn't appear that way.

I thought that the rear caliper mounts were bolted on, but they appear welded to me... mostly I wanted bigger rear brakes, as overheating isn't the issue for the short tests I do (1 -2 minutes each test)... I just need bigger rears to get the back out coming into the corners...

Also, rear caliper rebuild kits seem to be $75 each as cheap as I can get them. Is there a cheaper kit anyone knows of?

Cheers,

Daewoo

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Factory 5 Mentor

Factory 5

Posted
Posted

one option is to use 2 sets of calipers on each side, a bit complex though

second option is

hydraulic handbrake setup for the rears will get the back end swingin! disk rear only of course!

Garage7 in Adelaide make them to suit . about $300 and VERY strong

http://www.garage7.com.au/ but the web page is down

Address:

Unit 2

33 Light Crescent

Mount Barker

SA 5251

Phone:

Workshop (08) 8398 3107

Declan 0421 878 818

Luciano 0433 767 447

Web:

www.garage7.com.au

[email protected]

or by PM

Cheers,

Declan

Daewoo Enthusiast

Daewoo

Posted
  • Author
Posted
Find a wrecked out dr30?? I sold one with complete suspension and brakes for $50 once

Are DR30 brakes bigger??? Bigger rotors or bigger pad area?

Front brakes are easy.

Use modified VT Dunnydore, cost all up about $100.00 2nd hand, or Hilux 4 spots and maybe Z32 rotors.

D

Interested Dennis, I might get the details from you later... ATM I am trying to get the rears working better.

one option is to use 2 sets of calipers on each side, a bit complex though

second option is

hydraulic handbrake setup for the rears will get the back end swingin! disk rear only of course!

Cheers,

Declan

I've got a hydraulic handbrake... got a cheapie of eBay and changed the cyclinder to a better sized one I had in the shed... but the pad area at the rear just isn't big enough to overcome the locked diff and auto transmission... figure I just need a calliper with more pad area... and increase in rotor size would be a bonus... looks like I'll have to hit the wreckers with my trusty verniers...

Is it normal for the rear calliper mount to be welded to the swing arm???

Cheers,

Darryl

Ghostrider Grand Master

Ghostrider

Posted
Posted
Are DR30 brakes bigger??? Bigger rotors or bigger pad area?

Yes! DR30 rear rotors are 290mm as opposed to 250mm in the MR, but the pad area is about the same. They rely more on the leverage of the 145mm radius and the difference in the mounts is all on the caliper leg.

Is it normal for the rear calliper mount to be welded to the swing arm???

Yes, normally. The only bolt on rear caliper mount I have seen in recent times for a Nissan is the N12 ET Turbo Pulsar and they are extremely hard to find.

Cheers, D

Cheers,

Darryl

Daewoo Enthusiast

Daewoo

Posted
  • Author
Posted
Yes, normally. The only bolt on rear caliper mount I have seen in recent times for a Nissan is the N12 ET Turbo Pulsar and they are extremely hard to find.

N15 Pulsar are bolt on... as are R31 skyline... I unbolted the drums off the back of my N15, and bolted on R31 Skyline rears and they lined up perfectly... pretty sure the rear disks are a bolt on an the N15 Series II and SSS, but can't say 100%...

Cheers,

Darryl

Daewoo Enthusiast

Daewoo

Posted
  • Author
Posted
N15 Pulsar are bolt on... as are R31 skyline... I unbolted the drums off the back of my N15, and bolted on R31 Skyline rears and they lined up perfectly... pretty sure the rear disks are a bolt on an the N15 Series II and SSS, but can't say 100%...

Cheers,

Darryl

D,

Just checked,

I still have the caliper brakets that bolt to the rear axle of an N15 Pulsar. I still had the brakets, but unfortunately have thrown away the full set of Pulsar SSS Brakes... that is what you did before eBay when you couldn't sell your crap to other idiots...

The bolt spacing for the N15 rear calipers is the same as the MR30 rears. Don't know what the rotor offets are, but might be worth some investigation... once you know the standard SSS Pulsar ones fit, then you can look at what Pulsar guys do as rear conversions...

Just thinking...

Cheers,

Darryl

Matty T Collaborator

Matty T

Posted
Posted
Are DR30 brakes bigger??? Bigger rotors or bigger pad area?

In addition to what Dennis (correctly) said, the piston is 10mm (IIRC) larger - ~45mm vs. ~35mm.

You will also find these brakes on the rear of a Z31 300ZX.

Is it normal for the rear calliper mount to be welded to the swing arm???

The 1982 R30 Skyline came with rear drums. You can remove the drums and make your own rear caliper mounts, utilising the original drum mount bolt holes. Just the same way as people mount discs to the rear of a 1600/180B/240K etc.

The only problem is finding those trailing arms, and then finding a spare pair... :cool:

tir31 Experienced

tir31

Posted
Posted

ive used hr31 rear Aarms in my c210 coupe project with r33 turbo calipers/rotors and started 2day fitting hr31 Aarms to my dr30 which will run r33 gtr brembo calipers/rotors allround with the 1 1/16 gtr master cylinder. hr31 uses internal handbrake and later model brakes go on with little fuss.

jon.

Daewoo Enthusiast

Daewoo

Posted
  • Author
Posted
The only problem is finding those trailing arms, and then finding a spare pair... :blink:

You mean like the ones that were on the back of the sedan I sent to the scrappers a few months ago :) :) :)

I didn't realise that the Sedatch ones were welded until I got them apart...

At the moment I will persist with the standard brakes, it was really only to try and get the hydraulic handbrake to work better...

Anyone ever rebuilt the standard rear calipers??? I mean all the way to getting the handbrake mechanism out and back in again... I am never doing that again, what a pain in the @rse... you need six hands and exray vision... and after all that, it seems the problem with the (standard) handbrake sticking is probably a shitty cable anyway... :verymad: :verymad: :verymad

Thanks for all the replies...

Ghostrider Grand Master

Ghostrider

Posted
Posted
started 2day fitting hr31 Aarms to my dr30 which will run r33 gtr brembo calipers/rotors allround with the 1 1/16 gtr master cylinder. hr31 uses internal handbrake and later model brakes go on with little fuss.

jon.

Why on earth would you want this amount of braking power on an DR30?

You planning entering this car in Le Mans or something???

The DR I'm building will have stock DR rears, 10" DR booster, DR 1" m/cyl & BNR32 GTR fronts and I'm sure I will easily pull it up from 220~240kph.

Sounds like a lot a fart arsing about for next to no real benefit.

Wouldn't your time & effort be better utilised making the car handle & steer better?????

What size wheels and tyres do you plan using with this brake set up?????????

D

tir31 Experienced

tir31

Posted
Posted

easy brake conversion if u have hr31 Arms which can be had cheaply enough if u find 1 wrecking...

Y? because i can and got all the stuff at a good price so y not.

lemans? not at this stage.

yours sounds like a good upgrade but i wanted to upgrade the rears aswell.

next to no benifit? bigger are better are they not?

time wasted? its taken me 2days at the most and im also doing suspension/steering upgrades

wheels are work vs 18x8 & 9s 5stud > z31 hubs

ive wrecked out a few passages so had these hr31 Aarms sitting around and they mount quite easily to r30 crossmembers, the 4bolt turbo half shafts are an upgrade if your running an r200 and the stock hr31 turbo rear rotors are ventilated and of a good size but use a slide caliper. brakes can easily be upgraded for r32 onward twin piston setups by having the rotor redrilled ( if staying 4 stud ) and the caliper spaced 1.5mm with a hardened washer... not hard at all???

jon.

racsov500 Grand Master

racsov500

Posted
Posted
Why on earth would you want this amount of braking power on an DR30?

You planning entering this car in Le Mans or something???

The DR I'm building will have stock DR rears, 10" DR booster, DR 1" m/cyl & BNR32 GTR fronts and I'm sure I will easily pull it up from 220~240kph.

Sounds like a lot a fart arsing about for next to no real benefit.

Wouldn't your time & effort be better utilised making the car handle & steer better?????

What size wheels and tyres do you plan using with this brake set up?????????

D

because it will be turbo, and who says he isnt doing handling stuff? lol

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