521 diff options

[dans521]

I live in new zealand and due to this, h190 diffs are rather hard to come by, im currently doing a ka24e with carbs swap on my 521 which originally had a j15 in it, am also using shorter tires, meaning with the 4.8/4.6 gearing the diff has, its going to rev its head off. so i have a couple options

 

i found someone wrecking a 720 that had an l18, what ratio would this have (checked the tag but has nothing ands its in the middle of a field)

 

potentionlly use another diff, what options are there?

[thisismatt]

What year 720? 

[datzenmike]

Look on the driver's side inner fender below the hood hinge for the engine tag. Actually it may be on your left hand passenger side inner fender. Are fenders called wings down there?

 

 

Near the bottom TRANS.AXLE...... FS5W71B...... HF38 (yours may be a 4 speed F4W71B?)

 

H.... solid axle with removable 3rd member

F..... (I think) is the diameter of 190mm

38... 3.80 ratio. 41 is 4.10, 43 is 4.375, 46 is 4.625 and so on

 

 

[Charlie69]

On the passenger inner fender in the USA (not sure ofother countries) is a vin tag that gives the Engine trans and rear end information.

[dans521]

17 hours ago, thisismatt said:

What year 720? 

Unsure of year, i know its an l18 and has a h190, just didnt have a way of counting the gears or turning the wheels

[dans521]

17 hours ago, datzenmike said:

Look on the driver's side inner fender below the hood hinge for the engine tag. Actually it may be on your left hand passenger side inner fender. Are fenders called wings down there?

 

 

Near the bottom TRANS.AXLE...... FS5W71B...... HF38 (yours may be a 4 speed F4W71B?)

 

H.... solid axle with removable 3rd member

F..... (I think) is the diameter of 190mm

38... 3.80 ratio. 41 is 4.10, 43 is 4.375, 46 is 4.625 and so on

 

 

Unfortunately, the tag is thwre, says it had an l18 but doesnt say what gear ratio it had 

Ive also found an na16 2wd manual d21 that should habe a good ratio

[dans521]

16 hours ago, Charlie69 said:

On the passenger inner fender in the USA (not sure ofother countries) is a vin tag that gives the Engine trans and rear end information.

For us its on the right side on the bulk head, but had no information about the diff

[dans521]

17 hours ago, datzenmike said:

Look on the driver's side inner fender below the hood hinge for the engine tag. Actually it may be on your left hand passenger side inner fender. Are fenders called wings down there?

 

 

Near the bottom TRANS.AXLE...... FS5W71B...... HF38 (yours may be a 4 speed F4W71B?)

 

H.... solid axle with removable 3rd member

F..... (I think) is the diameter of 190mm

38... 3.80 ratio. 41 is 4.10, 43 is 4.375, 46 is 4.625 and so on

 

 

Oh and also we call them guards, and inner guards