fj 40 disc brake conversion

[project40]

looking for an easy change over from drums to disc brakes on front. Iam fitting holden 304 and 4 speed auto to fj 40 shorty so need to upgrade. Have been told 60 series discs will fit is this an easy swap and what is required for full change over.

[Shadow]

60 series swivel hubs, backing plates, calipers, and hubs(discs attached), 60 series master cylinder.

Think only the master may not be a bolt up, might need to redrill holes in the firewall, rest should all bolt on.

[v840]

You could also just buy a later model 40 series front diff with discs for around $100 or so. Would take an hour max to swap them over.

Probably the easiest IMO.

[Sixty's Guy]

You could also just buy a later model 40 series front diff with discs for around $100 or so. Would take an hour max to swap them over.

Probably the easiest IMO.

Do you know of any for sale for $100? I want one........

[v840]

Do you know of any for sale for $100? I want one........

Haha. Nup but they come up on here or ebay from time to time.

[Sixty's Guy]

Do you know of any for sale for $100? I want one........

Haha. Nup but they come up on here or ebay from time to time.

Ye, not for $100 though....

[Shadow]

Do you know of any for sale for $100? I want one........

Haha. Nup but they come up on here or ebay from time to time.

Ye, not for $100 though....

more like $300.

last one i saw anyway.

[v840]

Do you know of any for sale for $100? I want one........

Haha. Nup but they come up on here or ebay from time to time.

Ye, not for $100 though....

Ok, I'm terribly sorry to have understated the price. I was basing it on the fact that I bought front and rear 40 diffs for $250 (yes the disc front) a couple of years ago and I assumed that the price may have gone down further since then. I'm sorry that it seemed to offend you on some level.


There you go Project40, expect to pay $300 for a disc front end.



With luck you'll be able to sell your drum diff for $200.

[Sixty's Guy]

Chill dude, I'm not offended - I thought I was about to score a 40 series front disk setup for $100.

[croozy]

As far as your master cylinder goes you only need a disc brake master cylinder to suit a disc front. I just used one off a later model 40 series

[RAY185]

Do you know of any for sale for $100? I want one........

Haha. Nup but they come up on here or ebay from time to time.

Ye, not for $100 though....

Ok, I'm terribly sorry to have understated the price. I was basing it on the fact that I bought front and rear 40 diffs for $250 (yes the disc front) a couple of years ago and I assumed that the price may have gone down further since then. I'm sorry that it seemed to offend you on some level.


There you go Project40, expect to pay $300 for a disc front end.



With luck you'll be able to sell your drum diff for $200.

Hey can I get an apology too? I'm offended about something, can't recall exactly what, but I'm offended.

Yeah late model 40 master cylinder should be all you need. Bolts right on inplace of the original. 40,60,75,80 and hilux all have the same mounting pattern onto the booster I'm pretty sure (well I'm sure 40,60 and 75 do), so there should not need to be any mounting mods, only location of brake pipes differ. Some have had success with the standard drum brake master too in standard form, or by removing the residual valve. Its a bit of a mixed bag of results. Best to do the disc swap and play with masters as you go.

[jessie928]

Chill dude, I'm not offended - I thought I was about to score a 40 series front disk setup for $100.

if you can find a complete disk diff for a LC for 100 i will buy 10 of them off you.

Jes

[jessie928]

As far as your master cylinder goes you only need a disc brake master cylinder to suit a disc front. I just used one off a later model 40 series

one thing to keep in mind is that the DISK master cylinder is designed to work with rear drums with 1 slave per side.
the 40 series rears ( that come with drums all round) have 2 slaves per side.

Jes

[croozy]

Whe I did my conversion I still used my original master cylinder for when my car was 4 wheel drum. All I did was remove the return restrictor from the front side of the master cylinder to let the fluid return quicker when I took my foot off the brake so the fluid didn't hold the front calipers on. I had also done a 60 series rear conversion at the same time I changed the front to disc & using the old master cylinder worked fine.
I only changed mine to the later master cylinder when the original one shat itself last year.

[Shadow]

Whe I did my conversion I still used my original master cylinder for when my car was 4 wheel drum. All I did was remove the return restrictor from the front side of the master cylinder to let the fluid return quicker when I took my foot off the brake so the fluid didn't hold the front calipers on. I had also done a 60 series rear conversion at the same time I changed the front to disc & using the old master cylinder worked fine.
I only changed mine to the later master cylinder when the original one shat itself last year.

thats shit IMO.

[croozy]

It worked & passed a brake test every year at rego time plus saved me $100 odd dollars when I didn't have it.

[cooter]

we used hilux discs swivel hubs etc on my mates 45 and used the std master cyl with the resid pressure valve removed still goin and stoppin awesome after 2 years

[xenith]

Sixty's Guy

PostPosted: Mon Apr 06, 2009 8:42 pm
v840 wrote:
Sixty's Guy wrote:

Do you know of any for sale for $100? I want one........


Haha. Nup but they come up on here or ebay from time to time.


Ye, not for $100 though....

4 years ago i could not give 4 front away and the 3 rear that i had converted to disc all with new disc and recon clappers away so they went to scrap yard got $300 for the lot so 300 dived by 7 that would be $42.85 each so they do come up put people don't have the foresight to buy them till they need them then wing that they have to pay top dollar. remember i tried to GIVE them away first

[croozy]

we used hilux discs swivel hubs etc on my mates 45 and used the std master cyl with the resid pressure valve removed still goin and stoppin awesome after 2 years

Yeah mate mine lasted 6 years before it needed replacing. It is a common thing to do. As a disc brake master cylinder cost a fair bit.