Angle gear.

[MoleT-5R]

My understanding is, the front and rear diff are matched, and the angle gear is 1:1, just to turn the transverse output from the gearbox, to the longitudinal drive to the propshaft.

nope the front diff makes no real difference to what happens at the rear (they still work in sync with each other), this thinking is what has kept my v70r awd off the road for so long as I got it into my head that the box I bought didn't match the rear diff, but in the end that makes no difference as long as the angle gear and rear diff are matched......kicking myself as she could have been back on the road ages ago.......

[stribo]

]nope the front diff makes no real difference to what happens at the rear [/COLOR](they still work in sync with each other), this thinking is what has kept my v70r awd off the road for so long as I got it into my head that the box I bought didn't match the rear diff, but in the end that makes no difference as long as the angle gear and rear diff are matched......kicking myself as she could have been back on the road ages ago.......

I appreciate that, what I meant was I thought the front and rear diffs were both the same ratio, therefore the angle gear only needed to be 1:1.

[MoleT-5R]

I appreciate that, what I meant was I thought the front and rear diffs were both the same ratio, therefore the angle gear only needed to be 1:1.

nope that is where i went wrong, front gearbox can be any you fancy, but angle gear and rear diff ratios have to match...simples when put like that...took me a while to get my head around it, thus why the V70R awd got put on the back burner for so long, but will be returning in 2016 sporting a manual six speed awd box

[stribo]

nope that is where i went wrong, front gearbox can be any you fancy, but angle gear and rear diff ratios have to match...simples when put like that...took me a while to get my head around it, thus why the V70R awd got put on the back burner for so long, but will be returning in 2016 sporting a manual six speed awd box

So, with that being the case, I need to find out if the front and rear diff on the XC90 are the same ratio as the S60R.

[MoleT-5R]

So, with that being the case, I need to find out if the front and rear diff on the XC90 are the same ratio as the S60R.

no just whether the rear axle ratios are the same

[Ettienne]

How do the ratios compare on the xc90 to s60, should give you a rough idea.

However won't the xc90 have a larger rolling tyre radius, so if they're geared similar on the tacho, there probably different lol

[Dangerous Dave]

Had a look through some volvo tech stuff but can't find the ratios, they hide it really well Will keep digging...

[MoleT-5R]

How do the ratios compare on the xc90 to s60, should give you a rough idea.

However won't the xc90 have a larger rolling tyre radius, so if they're geared similar on the tacho, there probably different lol

final drives are final drives regardless of what tyres you fit to them, if the rear axles of steve's awds have the same ratio then they share the same angle gear unit, if they differ in rear axle ratio's he will need to keep a matching ratio angle gear unit for both cars for his 'just swap' plan

[Ettienne]

final drives are final drives regardless of what tyres you fit to them, if the rear axles of steve's awds have the same ratio then they share the same angle gear unit, if they differ in rear axle ratio's he will need to keep a matching ratio angle gear unit for both cars for his 'just swap' plan

Agreed ade, I was just thinking that his xc90 for example if it's 2,000 rpm at 60 and his s60r is the same, would it not point to different final drives if the xc90 had a larger rolling radius. (If that makes sense)

I remember looking at axles etc when I was going to manual convert the laser I seem to remember the xc90 was different and ratio of 3.31, 3.66 and 4.3 stick in my mind.

[MoleT-5R]

Agreed ade, I was just thinking that his xc90 for example if it's 2,000 rpm at 60 and his s60r is the same, would it not point to different final drives if the xc90 had a larger rolling radius. (If that makes sense)

I remember looking at axles etc when I was going to manual convert the laser I seem to remember the xc90 was different and ratio of 3.31, 3.66 and 4.3 stick in my mind.

yep see what your saying mate, different engine sizes / fuels etc will most probably determine different rear axle ratio's, I doubt that Steve's vehicles have the same angle gear ratio ( he's lucky if he has ) and then he'd still need to find a matching one to refurb, not difficult but it may be a bit of time before what he needs comes up at a sensible price.

[stribo]

Maybe I'll just shelve the plan. Lol

[MoleT-5R]

Maybe I'll just shelve the plan. Lol

do you understand how it works now, took me a while to get my head around what is relatively simple really was just muddled by final drive ratio's of the rear diff and gearbox which really have no influence on each other as the cars FD is gearbox governed. Might be worth noting what rear diff ratio's / angle gear unit part no's and just watch for when they come up.

[stribo]

Yeah, I understand how it works now, just seems like a lot of faff. lol

[MoleT-5R]

Yeah, I understand how it works now, just seems like a lot of faff. lol

yep these awd's are......lol

[stribo]

yep these awd's are......lol

Yeah, and who thought a foot operated parking brake was a good idea in a manual car?

[MoleT-5R]

Yeah, and who thought a foot operated parking brake was a good idea in a manual car?

stick with the 850's / early c/s/v70's save a lot of headaches.....lol

[stribo]

stick with the 850's / early c/s/v70's save a lot of headaches.....lol

None of the above will seat 7, and still have boot space.