Diesel gear ratios

[Jason YY]

Which diesels came with 4:11 ratio thirds ? I searched and found some answers but not all of the info I am after. Looks like some came with 3:7? and some with 4:11 is there an easy way to tell ? THANKS
jason

 

[roscoFJ73]

Which diesels came with 4:11 ratio thirds ? I searched and found some answers but not all of the info I am after. Looks like some came with 3:7? and some with 4:11 is there an easy way to tell ? THANKS
jason

The info is on the aluminium plate on the firewall. Where it says KO85 is the diff info and the 08 refers to 4.11 ratio and I think 05 is a 3.70.
More info here
http://www.birfield.com/modules.php?name=TLCFAQ&p=/~ramullen/FAQ/TEXT/09-01.html

 

[Jason YY]

Ok thnaks for that link, But the issue I have is I found a set of axles out of a diesel rig had a 3b and a 5 speed with that engine tranny combo will it have 4:11's ? The rig is long gone so no firewall tag. And the axles are about 2 hrs from my home.

I guess that its about a 50/50 chance of them being 4:11?

 

[lowenbrau]

IF you tell us the country its in, the year and the model there's a pretty good chance we can tell you the diff ratio that came in it from the factory.

 

[troopie]

Ok thnaks for that link, But the issue I have is I found a set of axles out of a diesel rig had a 3b and a 5 speed with that engine tranny combo will it have 4:11's ? The rig is long gone so no firewall tag. And the axles are about 2 hrs from my home.

I guess that its about a 50/50 chance of them being 4:11?

You can be sure that a 3B had 4.11's atleast thats how they came from the factory. You'll never know what a PO had done to it, but i would take the chance.

HTH

Mark

 

[Jason YY]

IF you tell us the country its in, the year and the model there's a pretty good chance we can tell you the diff ratio that came in it from the factory.

Sorry I am in the US its a canadian rig. So if I spin the pinion How many turns will = 4:11 ratio ? If I carefully mark my starting point on both the pinion and brake drum.

Is it 1 turn of the pinion should = slightly more than 4 turns of the brake drum?

 

[lowenbrau]

Canadian rigs with 3B and H55f...

BJ42 all 4.1:1 1983,84
BJ60 all 3.7:1 1983, 84, 85
BJ70 all 3.7:1 1985, 86, 87

You'll turn the pinion flange 4:1 or 3.7 times for each revolution of the wheels.

 

[Tapage]

My HJ-60 87 come with K0295 = 3.70

 

[Jason YY]

Canadian rigs with 3B and H55f...

BJ42 all 4.1:1 1983,84
BJ60 all 3.7:1 1983, 84, 85
BJ70 all 3.7:1 1985, 86, 87

You'll turn the pinion flange 4:1 or 3.7 times for each revolution of the wheels.

Thanks I would have been wasting my time on the axles, I thought all canadian spec diesel cruisers came with 4:11 but it looks like only the bj42 did. Or are the other models with diferent diesels that did also.

I may still go check them out

 

[brownbear]

HJ60 s with the auto had 4.11

 

[Jason YY]

Thanks again for the info. Since I don't know exactly what rig they came out of I will just go check them out and see what ratio. Thanks again.