Better 70-Series brakes? (2 Viewers)

[coldtaco]

I installed a set of first gen T100 front calipers on mine the last time I serviced the front end. It definitely improved breaking. You do have to cut/trim the stone shield, but it bolts right on.

 

[SNLC]

How do you fit the 80 series brakes to a 70 front end ?

Cut the knuckle ball off the housing, same from an 80 housing. Weld 80 knuckle ball on 70 housing. Bolt up the 80 outers. Done.



Cheers

 

[GTSSportCoupe]

Cut the knuckle ball off the housing, same from an 80 housing. Weld 80 knuckle ball on 70 housing. Bolt up the 80 outers. Done.



Cheers

That's a little beyond the average DIY backyard mechanic.... haha.

Aren't the 1990+ 70 series calipers the same as same year (2nd gen v6) 4Runner calipers? I thought those guys had figured out some oem caliper upgrade options; but it's very possible I'm not remembering right....

 

[nickolai]

On all my cruisers, including the KZJ78 I had I went with Terrain tamer high performance rotors and heavy duty ceramic pads. The 80 will get them at knuckle rebuild time.

that plus fresh fluid and lines makes a high difference.

If that’s not enough then consider an additional remote booster. The popular one down here is a VH40 or 44.

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[coldtaco]

That's a little beyond the average DIY backyard mechanic.... haha.

Aren't the 1990+ 70 series calipers the same as same year (2nd gen v6) 4Runner calipers? I thought those guys had figured out some oem caliper upgrade options; but it's very possible I'm not remembering right....

I used calipers from a V6 T-100. Improved breaking and cheap-NAPA rebuilt. You do have to trim the stone shield

 

[GTSSportCoupe]

I used calipers from a V6 T-100. Improved breaking and cheap-NAPA rebuilt. You do have to trim the stone shield

I think that is the upgrade I was thinking of.

 

[WarDamnEagle]

Or braking..... Just put some ceramic pads over some cryo hardened rotors. High temp fluid and relatively incompressible brake lines and see how it feels. Besides, can't you always gear down going down hill??

 

[hoser]

I am also running all new 80 series front and rear brakes/axles, booster, M/C, LSPV delete, added manual proportioning valve.... the brakes are impressive.

I had considered using the Front Range Off Road (FROR) kit on my 70 axles previously....

Brake Upgrade - The Tundra Mod

Hello All, Here are some specifics for performing the Front Range Off Road (FROR) Tundra brake mod on the front axle of a 60 Series Land Cruiser. This combination of master/caliper seems perfectly balanced with pedal travel, feel, and response. Braking performance is a huge improvement over...

forum.ih8mud.com

 

[Arite82]

Aren’t the 90+ 70 series the same as an 80 series from the knuckle out? I thought I remember them having the same part number for the knuckles?

 

[hoser]

Front Disc brakes dimensions:

1993-1997 LC80
43512-60090
Diameter [mm]:311
Brake Disc Thickness [mm]:32

1990-1993.4 LC75
43512-60041
Diameter [mm]:301
Brake Disc Thickness [mm]:20

1999-2006 Tundra
43512-0C011
Diameter [mm]:319
Brake Disc Thickness [mm]:28

 

[OGBeno]

I am also running all new 80 series front and rear brakes/axles, booster, M/C, LSPV delete, added manual proportioning valve.... the brakes are impressive.

I had considered using the Front Range Off Road (FROR) kit on my 70 axles previously....

Brake Upgrade - The Tundra Mod

Hello All, Here are some specifics for performing the Front Range Off Road (FROR) Tundra brake mod on the front axle of a 60 Series Land Cruiser. This combination of master/caliper seems perfectly balanced with pedal travel, feel, and response. Braking performance is a huge improvement over...

forum.ih8mud.com

Sorry, just to confirm Les:

80 series (or later 70 series stuff) birfs/knuckles/spindles/calipers/hubs on the front axle? So basically what @SNLC did with the PZJ70 he recently completed?

 

[hoser]

Well, sort of..... all OE 80 calipers, rotors and hubs but with Hellfire/Ruffstuff 80 knuckles, RCV chromoly birfields and 9.5" diff in a Diamond axle housing... ~63" WMS.... just like an OE 80 axle... but we moved the diff inboard a bit for better fitment.

 

[OGBeno]

Well, sort of..... all OE 80 calipers, rotors and hubs but with Hellfire/Ruffstuff 80 knuckles, RCV chromoly birfields and 9.5" diff in a Diamond axle housing... ~63" WMS.... just like an OE 80 axle... but we moved the diff inboard a bit for better fitment.

Gotcha. Forgot yours is a highly modified 74.

Thanks.

 

[AussieHJCruza]

Aren’t the 90+ 70 series the same as an 80 series from the knuckle out? I thought I remember them having the same part number for the knuckles?

Based on my last 2 knuckle rebuilds being a 95 FZJ80 and 07 VDJ79, yes.

 

[Honger]

Front Disc brakes dimensions:

1993-1997 LC80
43512-60090
Diameter [mm]:311
Brake Disc Thickness [mm]:32

1990-1993.4 LC75
43512-60041
Diameter [mm]:301
Brake Disc Thickness [mm]:20

1999-2006 Tundra
43512-0C011
Diameter [mm]:319
Brake Disc Thickness [mm]:28

I’m assuming that the 80 series rotors and calipers don’t just bolt on to the 70 series knuckle... or is it that easy?

 

[hoser]

Your assumption is correct, it's not bolt on at this time. Somebody needs to come out with a 80 series Big Brake Kit.

For bolt on, I'd suggest the FROR brake mod I linked earlier. 60/70 series rotor vs Gen 1 Tundra rotor.... @60Works

 

[jblueridge]

I used the slightly larger 4runner calipers with an 80 series booster and early 80 MC. Excellent results.

 

[Jonathan Hanson]

Thanks for all the replies. There are some good suggestions here! Hoser's comparison photo of the discs was the perfect example of how to actually improve braking beyond better pads and fluid. Simply upping the calipers might improve braking around town but will do nothing to reduce fade, as all you are doing is installing a way to introduce more heat into the existing discs. Likewise with only installing a better/larger booster/master cylinder. Regarding the comment about downshifting: That only works to a limited extent when you are descending 3,000 or more feet on a winding road that requires braking every 200 yards or so . . .

 

[FJBen]

Thanks for all the replies. There are some good suggestions here! Hoser's comparison photo of the discs was the perfect example of how to actually improve braking beyond better pads and fluid. Simply upping the calipers might improve braking around town but will do nothing to reduce fade, as all you are doing is installing a way to introduce more heat into the existing discs. Likewise with only installing a better/larger booster/master cylinder. Regarding the comment about downshifting: That only works to a limited extent when you are descending 3,000 or more feet on a winding road that requires braking every 200 yards or so . . .

Again you describing the perfect environment for an exhaust brake. You would have ZERO fade with stock brakes and this setup. You would also save money on brakes as you wouldn't be on them, regardless if they are upgraded or not.

 

[AndrewHadji]

is downshifting not an option? <nevermind, read two posts above>I hardly touched the brakes when i went through the colorado tunnel heading towards vail, i did have it in 3rd going 55 the whole way down. I too have looked at ways to improve braking, this is a good thread