standardbyker88

okay, i hit the junkyard today and found 2 87-92 supras, non turbos. both 5 speeds. and an older 81-86 celica supra 5 speed. i am wondering if either style has bigger brake masters or clutch masters. and if the older tranny will work. i have a 92 2wd pickup. 22re 5 speed. i would like to do the W58 swap like targetnut. only i want the shifter back farther, he didnt. and if the boosters or masters are a bolt in swap or close to it...that would be cool. thanks.

standardbyker88

anybody have any info? i havent researched or measured much, but id assume that parts are interchangeable. just not sure if they have any benefits. and then the issue of them being setup to give more braking force for the rear disks vs the drums i have. i lowered mine 5" front, 3" rear, so that goofy linkage is adding a bit. the weight sensor deal off the axle. id like to go to rear disks, but it isnt that big a deal. thanks.

shaeff

first, i'm a 4x4 owner, and i'm not too familiar with the 2wd pickups, but i'll try my best.

as you already know, the manual n/a 86.5-92 supras used the w58 transmission. the bellhousing on the w58 transmission is the same as that of the w56. i know for a fact that the 4x4 22re pickups used the w56 transmission, but i'm unsure of what the 2wd's use.

the w58 supra bellhousing bolts right up to the 22re, (which is why it's so easy for us 22re 4x4 guys to do a 7m swap!). if the bell pattern is the same on your transmission, then you should be able to simply bolt the transmission to your truck, using the existing bell.

another option if you want a stronger transmission would be to use the w58 from an MKIV N/A 5 speed supra (93.5-98). they're a bit beefier than the MKIII w58's.

the mkiv w58 might be a tiny bit longer than the mkiii's also, but i'm not entirely sure of that, so don't take that as gospel.

i'm pretty certain that the clutch masters are about the same size. if you want a bigger brake master cylinder, i believe the v6 3vze's is larger than ours . if you want bigger brakes, i'm also pretty sure they came with larger calipers on the front as well.

another bit of info you really want to take into consideration. most of the braking force is from the front brakes. when you apply the brakes, all the weight transfers to the front of the vehicle. simply adding rear disks will make them lock up immediately, even if the front's aren't locked. it's quite dangerous. if anything, you want LESS brake modulation in the rear of the truck with disks back there.

a lot of the 4x4 guys who have done rear disk conversions have to put valves in the lines to prevent rear lockup, which is incredibly dangerous.

if the LSPV (load sensing proportioning valve) is lower than it normally is (because you've lowered the truck, it will "think" that you have a load in the bed)- then you'll have more braking force in the rear. be careful! having it adjusted improperly can result in serious braking problems, as in rear lockup, especially on slippery surfaces such as rain or snow.

standardbyker88

cool. yeah, i read up on the w58s. im sure they are beefier in the 93+ versions, but alot more scarce. i have 2 available right now of the older style. those cars were rated between 140 and 170hp depending on year, which is more than i have. so i cant see why its not good for mine. yes, i have a w56. if the tranny is longer overall, thats okay...easier to shorten a driveshaft than to lengthen it.

as for the brakes, at some point i will upgrade them but i dont usually put myself in a spot where i have to brake hard, even though i cruise fast around town. i use my gears. i know, brakes are cheaper than trannys. thanks for the info. i do plan to get rid of that rear sensor deal all together sometime. thanks.

shaeff

all N/A (7MGE) 86.5-92 supras were rated at 200hp, 180ft lbs tq.

standardbyker88

eh. i forgot the numbers off the top. but i know the 5m-7ms ranged quite a bit as the years went by.