[suzooky87]

Hey people

I have been searching out there and have not found anything conclusive............ Is there anyone who has actually done this and can tell me what they did ?

Please no guess work, as this is only about things that have actually been done. Thank you.

[bigdogdazza]

I also want the facts about disc brake rear end as I drove through some muddy/water areas and found the lack of brakes a little less than fun.

[Scales]

only type ive heard of is that mega expensive kit available from italy. but that sounds almost as hard as getting stuff from apio.

sorry i cant be more helpful than that.

[lordviper556]

dg tuning to a disc brake kit, cant remmeber how much it was tho.

[zooky08]

viewtopic.php?f=5&t=27235&hilit=Jimny+rear+disk
This thread was started by monley

Don't no if they found out what the difference was between a bent kit or a Jimny ones.
I no Sierra rotors don't fit onto a Jimny.
I have a Sierra benT kit here that I could try but won't see me pulling my diff apart anytime soon

[suzooky87]

lordviper556 wrote:

dg tuning to a disc brake kit, cant remmeber how much it was tho.

244.13 GBP (incl. 21% VAT), converts to $392.00 AUD + Postage

[Fatzook]

Drum rear is only half the issue. It should be more reliable than drum ( from a servicability POV) but once you bias it properly, its hardly an upgrade in braking power over a properly working drum rear.

The only way to get better brakes is to upgrade the fronts.

If someone has a spare Jimny front diff floating around ( with rotors) I could see how hard it will be to machine up some brackets for an aftermarket caliper like a Wilwood Billet or similar.

vented rotors would be a advantage too.

Anyone know the offsets on the Jim rotor off the top of their head?

[suzooky87]

Fatzook wrote:

Drum rear is only half the issue. It should be more reliable than drum ( from a servicability POV) but once you bias it properly, its hardly an upgrade in braking power over a properly working drum rear.

The only way to get better brakes is to upgrade the fronts.

If someone has a spare Jimny front diff floating around ( with rotors) I could see how hard it will be to machine up some brackets for an aftermarket caliper like a Wilwood Billet or similar.

vented rotors would be a advantage too.

Anyone know the offsets on the Jim rotor off the top of their head?

Yes, I totally agree. If you could fit Vit calipers and roters to a Sierra i dont see it being too hard to do it to a jimny although i have never done a brake upgrade to anything apart from fancy roters.........

I am also after doing something that would not be too noticeable, so a front upgrade would be better suited to me.

[lordviper556]

id be interested in a front upgrade kit if you make one fatzook

[10WEr]

I had DBA GOLD vented rotors on the front of my jimny, made no noticeable difference one bit with quality brake pads, but they did brake down and rust in less then 12 months, how ever I do a fair amount of beach work which wouldn't help,

[zukenutter]

If you guys don't think your brakes work well enough and you haven't done this ISPV yet, you should before any mods/upgrades.

That said, it would be nice to have a cheap, easy upgrade. Early Jims may match something off the shelf. VVT Jimnys may find a rotor match in the later GVs??

[zooky08]

i dont no what your having problem with the stock brakes,must be buying shit brake pads, i run good brake pads, non abs and 30s and my brakes pull me up in a heart beat. in the wet its a different story but in the dry i have no problems

[Fatzook]

10WEr wrote:

I had DBA GOLD vented rotors on the front of my jimny, made no noticeable difference one bit with quality brake pads, but they did brake down and rust in less then 12 months, how ever I do a fair amount of beach work which wouldn't help,

Unless you changed your calipers, you did not have vented rotors.

Probably slotted rotors.

[bigdogdazza]

Yup if someone could make up a conversion bracket to suit bigger brakes I will buy in a heartbeat!

[Fatzook]

I believe jimny and coily knuckles are fairly similar in that they have the caliper mount cast onto the knuckle.

Does anyone know if they are infact the same?

[zooky08]

jimny calipers mount to the knuckle like you said fatzook and they have the same bolt spacing as a leafy sierra.

[suzooky87]

zooky08 wrote:

i dont no what your having problem with the stock brakes,must be buying shit brake pads, i run good brake pads, non abs and 30s and my brakes pull me up in a heart beat. in the wet its a different story but in the dry i have no problems

I have good pads. I hardly believe that your car would pull up as well as a standard jimny, not that you said it would. Your tyres are 15% or so larger than standard tyres. Tyre size affects braking just as much as acceleration/power of which is corrected with gearing reduction. I think that you, just like me have literally 15% less stopping power weather you notice it or not. not sure if that is how it works though. The point is that if you have bigger tyres you braking will be affected.

[Fatzook]

suzooky87 wrote:

zooky08 wrote:

i dont no what your having problem with the stock brakes,must be buying shit brake pads, i run good brake pads, non abs and 30s and my brakes pull me up in a heart beat. in the wet its a different story but in the dry i have no problems

I have good pads. I hardly believe that your car would pull up as well as a standard jimny, not that you said it would. Your tyres are 15% or so larger than standard tyres. Tyre size affects braking just as much as acceleration/power of which is corrected with gearing reduction. I think that you, just like me have literally 15% less stopping power weather you notice it or not. not sure if that is how it works though. The point is that if you have bigger tyres you braking will be affected.

All of this is correct.

Also take into consideration the extra weight that you carry in form of accessories, bigger tyres etc, and the brakes are certainly compromised by more than just the percentage increase in tyre diameter. It may pull you up safely once, but backing it up for a second sudden stop may be more than your standard brakes can handle.

[zooky08]

suzooky87 wrote:

zooky08 wrote:

i dont no what your having problem with the stock brakes,must be buying shit brake pads, i run good brake pads, non abs and 30s and my brakes pull me up in a heart beat. in the wet its a different story but in the dry i have no problems

I have good pads. I hardly believe that your car would pull up as well as a standard jimny, not that you said it would. Your tyres are 15% or so larger than standard tires. Tyre size affects braking just as much as acceleration/power of which is corrected with gearing reduction. I think that you, just like me have literally 15% less stopping power weather you notice it or not. not s ure if that is how it works though. The point is that if you have bigger tyres you braking will be affected.

yes that's correct but i didn't say it was better or the same as stock braking
for the size tires, im running IMO still pulls up good. i wouldn't worry about a upgrade unless you tow heavy loads alot, bigger engine, or hate had mud in the rear drums. that's just me though, for what i use my car for, it pulls up safely without a hassle.

[suzooky87]

zooky08 wrote:

suzooky87 wrote:

zooky08 wrote:

i dont no what your having problem with the stock brakes,must be buying shit brake pads, i run good brake pads, non abs and 30s and my brakes pull me up in a heart beat. in the wet its a different story but in the dry i have no problems

I have good pads.I hardly believe that your car would pull up as well as a standard jimny, not that you said it would. Your tyres are 15% or so larger than standard tires. Tyre size affects braking just as much as acceleration/power of which is corrected with gearing reduction. I think that you, just like me have literally 15% less stopping power weather you notice it or not. not s ure if that is how it works though. The point is that if you have bigger tyres you braking will be affected.

yes that's correct but i didn't say it was better or the same as stock braking
for the size tires, im running IMO still pulls up good. i wouldn't worry about a upgrade unless you tow heavy loads alot, bigger engine, or hate had mud in the rear drums. that's just me though, for what i use my car for, it pulls up safely without a hassle.

Neither did I.

[suzooky87]

zukenutter wrote:

If you guys don't think your brakes work well enough and you haven't done this ISPV yet, you should before any mods/upgrades.

That said, it would be nice to have a cheap, easy upgrade. Early Jims may match something off the shelf. VVT Jimnys may find a rotor match in the later GVs??

Awesome one ! Will be doing that for sure. Thanks Zukenutter

[zooky08]

sorry miss read that. well might be telling a lie then but i will admit that i have sheared a jimny caliper into bits after pulling hard up at a blind t secetion, ever since is change to sierra calipers i havnt had a promblem. dont now how week the jimny caliper is to a sierra one, a bigger caliper would be ideal for bigger tyres though.

[jimny_timmy]

Fatzook wrote:

Drum rear is only half the issue. It should be more reliable than drum ( from a servicability POV) but once you bias it properly, its hardly an upgrade in braking power over a properly working drum rear.

The only way to get better brakes is to upgrade the fronts.

If someone has a spare Jimny front diff floating around ( with rotors) I could see how hard it will be to machine up some brackets for an aftermarket caliper like a Wilwood Billet or similar.

vented rotors would be a advantage too.

Anyone know the offsets on the Jim rotor off the top of their head?

I'm getting a new one tomoz if you'd like me to measure it? Just let me know what I need to measure...

[Fatzook]

jimny_timmy wrote:

I'm getting a new one tomoz if you'd like me to measure it? Just let me know what I need to measure...

Cool.

Can you measure the thickness of the new rotor, and the hight of the rotor hat from the back of the rotor to the wheel mounting surface.

Cheers

[royce]

According to the DBA catalouge, at least early Jimnys use DBA 513 rotors and DB403 pads, which are SWB vit rotors and sierra pads

So unless there is some fancy offset in the caliper mounts there is likely a good chance vented vit brakes might go on

[Fatzook]

royce wrote:

According to the DBA catalouge, at least early Jimnys use DBA 513 rotors and DB403 pads, which are SWB vit rotors and sierra pads

So unless there is some fancy offset in the caliper mounts there is likely a good chance vented vit brakes might go on

I don't know why, but I recall there being SOME difference. Not sure what though I need to have a look at a Jimny diff.

I believe the M series run a different rotor though. Z-nutter mentioned it onece. Maybe just the VVT models...

[lordviper556]

when i got new rotors i had to mesure the hole in the middle becasue there are 2 types, from memory 1 was 89mm and the other was 90 or somthing.

[zukenutter]

just the VVTs

[Fatzook]

zukenutter wrote:

just the VVTs

So what is different? The offset of the rotor or the locator spigot?

[zukenutter]

Fairly sure the only difference is the size of the locator spigot.
Type III VVT 108mm
Type II Non VVT 107mm