Celica Brake Upgrade

[RAd28]

hopper stoppers recommended nothing less then a 1" master from the land cruisers for their conversions...

the -A70 supra's use a 15/16th master don't they???

[TurboRA28]

I found going to a larger 1" master made the braking performance worse.. Not enough pressure now.

[Smokey228]

My rotors are machined down to 273-4 and cleared okay when i dummy fit it all... Very lil 'spare' room, but i dont imagine a rotor growing much under heat or whatever..?

And ive got a a70 master cylinder with the celica standard booster jobbie, from everywhere ive read/been told its sposed to be just fine... 2nd'd Rad28's question, they are 15/16th?!

Cheers,
Jase

[RAd28]

And ive got a a70 master cylinder with the celica standard booster jobbie, from everywhere ive read/been told its sposed to be just fine... 2nd'd Rad28's question, they are 15/16th?!

Cheers,
Jase

i never realised you were suppose to keep the standard booster i would have thought you'd keep the A70 booster and master cyclinder?

[jonra23]

I found going to a larger 1" master made the braking performance worse.. Not enough pressure now.

High pedal pressure, low pedal travel and low braking effect is as you said from too big a master cylinder.
Two fixes are possible.
(1) Fit a smaller master cylinder at the expense of longer pedal travel, gives greater feel and easier to push to the edge of locking.

(2) Fit a larger ratio Brake booster at the expense of brake feel, can be difficult to push brakes to the edge without locking a wheel.


regards
jon

[TA-022]

ive got a 1" (MA70) master cylinder bolted to my std 28 booster.

heard this works fine ... only issue i expect is brake bias and for that i hate an adjustable valve.

[Smokey228]

Nath, So assuming the ma70 is gonna be the same size as the ja70, do you know if we'll get the same issue as joel? I ask you cause i know youve dummy fit it all, but dunno wether or not youve tested...

Mwah,
Jase

[takai]

Ideas on what will fit to a KE30 booster, i havnt looked at the master yet.

Edit: Hm, i wonder if the AE86 booster will bolt up to a KE30 firewall... have a spare booster....

[TurboRA28]

Smokey
http://www.toymods.net/forums/showth...aster+pressure

[TA-022]

what brakes are you running joel?

going on this as a ratio game Master:Calipers

ive gone from RA28Master:RA28Calipers

to

MA70Master:HILUXCalipers

and i know early landcruiser / hilux used 1" master (so too MA70) and considering im
using the hilux/landy calipers I shouldnt have these issues mentioned ...

i think?

[merc-blue]

Hey guys i read back on page 10 i think that HQ wheel bearings work arite on the Cornona struts/pugot rotor combo?
also what hub is generaly used in this setup? (to match the HQ bearings) TA RA Corona?
Cheers

[RAd28]

iv'e heard this too.. the crown guys use the HQ rotors as upgrades on the '65s, but as i understand, the HQ has a crown/captive hub setup, no need for a seperate hub, though i could be wrong

[WDE_BDY]

iv'e heard this too.. the crown guys use the HQ rotors as upgrades on the '65s, but as i understand, the HQ has a crown/captive hub setup, no need for a seperate hub, though i could be wrong

Yep rotor/hub in full is swapped. They also fit Commodore hubs/rotors, mate has a V8 EH holden with HR front, HQ stubs and VN hubs/rotors. Obviously will need a suitable caliper and bracket.

Callum

[TA-022]

i have tested this myself... so this is 100% correct.

HQ has same bearings as XT130/ra23-28 etc.

Yes a disc (has integral hub ie hub joined solid to rotor) boltsa directly onto ra28 and xt130 corona struts.

as mentioned bracket will be needed to mount a caliper.

oh and no this disc is tooooo thick for std 4 piston hilux calipers.

[merc-blue]

Cheers for the info,
has anyone shortened the struts for TAs before if so where did they cut/weld
i have been looking at them today and cant decide what is best i would like to weld them right near the stub so that its not as obvious,
is it possible to cut them off and get the thread put on the top?