Diff change in RT104 corona

[lightning]

can anybody help as i am wanting lower engine rpm out of my car i have the 18rg with steel case 5 speed,the diff ratio isnt right i would like to get better or lower rpm out of the car possibly with a LSD could anybody help with any sugestion dont realy want have to convert another diff is there a straight bolt in job for my diff housing
thanks and regards paul aka- LIGHTNING.

[M.J.H]

Do search for the diff code and this will tell you what ratio you have and what is avalible.

Will say on the build plate of the car what diff it is, eg F ,T, G etc type.

Or you could just fit some 15" rims and tyres off another car with the right stud pattern.

[cambelt]

Theres 2 diffs the aussie and the jap one , you could find a taller ratio for both but id guess its easyer for the jap diff as you just drop the centre out .
i think the rt 104 has a t series diff so you could search celica diffs as well . there would be diff ratios for the aussie diff but im not sure who would know ( maybe mr chin)
Dave

[Mr DOHC]

the bog warmer diff has NO options available, what u got is it. 3.909

if u can put in the aisin diff, then they are a 4.11, but am not sure on the fitment

[cambelt]

Well the jap diff i a T diff i think , there must be other ratios but 4.11 for them .
Dave

[RT104GT]

4.111 is the GT diff 4.100 more likely the Sedan diff.

Anyone lookinf for an F series Diff according to the microfiche the Toyota Crown of 7604 ownwards imported into Australia should have an F series diff 4.100

[RT104GT]

Do search for the diff code and this will tell you what ratio you have and what is avalible.

Will say on the build plate of the car what diff it is, eg F ,T, G etc type.

Or you could just fit some 15" rims and tyres off another car with the right stud pattern.

Thnaks

WHAT ARE THE CODES AND HOW DO YOU READ THEM?

[airfireman1]

have a look at this company they may be able to help they show all the available ratios
http://www.difflap.com.au
Cheers

[RT104GT]

Thanks

WHAT ARE THE CODES AND HOW DO YOU READ THEM?

Here is the Diff lap document a bit out of date with Toyota.

http://www.difflap.com.au/ratios1.pdf