diffs.

steveyblack

Member
Jun 21, 2007
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is there a difference in the rears of a turbo and non turbo supra..i know the gearing will be diff but do they both have lsd(i know the turbo dose, but idk about non turbo)

thanks
steveyblack
 

bowsercake

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Aug 24, 2005
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NA with sport package (has TEMS) will have a LSD while all other NAs will have an open diff. NAs also have a higher ratio.
 

steveyblack

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Jun 21, 2007
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good i got a 4.30:1 lsd...

im looking to go the whole 2jz route, and when i do dose the r154 go well with the 4.3? If not im guessing the swap to a 3.74(turbo rear?) isnt too difficult
 

Yellow 13

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Apr 4, 2006
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I have 2. Thinking about trading one for a 3.91.

I'd try the Sacramento junkyards. You could probally get one for a decent price. I think theres some partouts on craigslist too.
 

steveyblack

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Jun 21, 2007
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a na sport package...
\

ehhhhhhhhh idk what i would choose, i would want the low end but i also would want top end...ill prob end up going 3.74 for the top end...can i just switch the gears in the pumpkin or should i just switch the whole rear part of the drive train
 

Blackfin

Beach Bum
Jun 16, 2005
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John's Pass, Florida
steveyblack said:
good i got a 4.30:1 lsd...

im looking to go the whole 2jz route, and when i do dose the r154 go well with the 4.3? If not im guessing the swap to a 3.74(turbo rear?) isnt too difficult

R154 will work fine with any of the differentials. Chose the differential ratio that suits your ambitions. If your ambition is fast times on the strip or just to spin wheels in first, second and maybe third, then the higher ratio (4.3:1) may help you do that. If your ambition is absolute top speed or better fuel efficiency on the highway then go with the with the lower ratio. The reason the na cars have the 4:3 is because the higher ratio made the car with the less powerful engine more responsive at the expense of top end speed. With a properly built 2jz, you will not have that problem.
 

starscream5000

Senior VIP Member
Aug 23, 2006
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Hot and Humid, KY
steveyblack said:
is there a difference in the rears of a turbo and non turbo supra..i know the gearing will be diff but do they both have lsd(i know the turbo dose, but idk about non turbo)

thanks
steveyblack

Not all NA's have an LSD, and yes, there are different gear ratios to chose from, about 3 good ones. Stay away from the 1JZ diff's (can't remember the name of them at the moment, but they are 4.10's) if you plan on making large power and hard launches, they tend to shit themselves.
 

AGlobalThreat

Acceleration
Apr 4, 2005
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Santa Clarita
Blackfin said:
R154 will work fine with any of the differentials. Chose the differential ratio that suits your ambitions. If your ambition is fast times on the strip or just to spin wheels in first, second and maybe third, then the higher ratio (4.3:1) may help you do that. If your ambition is absolute top speed or better fuel efficiency on the highway then go with the with the lower ratio. The reason the na cars have the 4:3 is because the higher ratio made the car with the less powerful engine more responsive at the expense of top end speed. With a properly built 2jz, you will not have that problem.

Well said. +1 to you.
 

Poodles

I play with fire
Jul 22, 2006
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starscream5000 said:
Not all NA's have an LSD, and yes, there are different gear ratios to chose from, about 3 good ones. Stay away from the 1JZ diff's (can't remember the name of them at the moment, but they are 4.10's) if you plan on making large power and hard launches, they tend to shit themselves.

torsen... they're great diffs, but the one in the supra just can't take the punishment of shock loads or lots of torque...