st185 hubs -> st165

[Mr_procrastination]

Ok so done a lot of serching, but couldnt fine anything on st185 hubs being swapable to a st165...

Found lots on brakes which sounds bolts on easy.

Suspention that looks very stright forward for the front, and simply bolt on for the back.

But nothing on hubs ????? (as I need to do at least one bearing set im thinking why not just change the hubs too, and then suspention change would get even easyer. At this point looking at a good doner car and swapping as much as possible )
So if anyone knows about the hubs that would be great
And any info on other interchangable parts would be great too

Thanks

[Malcolm]

I seem to remember that the st185 front hubs had larger strut attachment bolts than the st165 - from memory though the rears were the same. If you swapped struts it would probably be ok, but I suspect you might have to swap top hats on the struts. For the most part the two chassis' are very similar. I reckon Ryan (Twolitre) probably knows the answer to this one actually

[RunningRich]

Doesn't the ST165 have in-built camber adjustment all around whereas the ST185 does not?

Now do you means hubs (which go roundy round) or knuckles (which hold the wheel bearing and hub?).

[sergei]

Ok so done a lot of serching, but couldnt fine anything on st185 hubs being swapable to a st165...

Found lots on brakes which sounds bolts on easy.

Suspention that looks very stright forward for the front, and simply bolt on for the back.

But nothing on hubs ????? (as I need to do at least one bearing set im thinking why not just change the hubs too, and then suspention change would get even easyer. At this point looking at a good doner car and swapping as much as possible )
So if anyone knows about the hubs that would be great
And any info on other interchangable parts would be great too

Thanks

I have pressed in ST182 spigots(also known as hubs - the bits where the wheels bolt on to ) on the ST165 hubs (also known steering knuckle) while replacing the bearings.

[Malcolm]

I have pressed in ST182 spigots(also known as hubs - the bits where the wheels bolt on to )

I think you mean spindles

[Mr_procrastination]

Ok so im meaning hub and knuckle... the whole shooting box .

So sounds like ill lose some camber adjustments that would be worth keeping can anyone else conferm that ???
And if i was to use the st185 hub/knuckle assembly and strut then i would need to keep the st165 strut top... soo are the top hat bolt paterns not the same then ?... and im guessing that the spring are the same diamiter too???
If someone has the answers that would be great

p.s. car is a 1986


Also can anyone coment on the differant front/rear torque distribution of the st165, st185 st205 boxs ??

and thiese boxs lsd types, and same question for the rear diff??

Thanks

[Malcolm]

From memory the springs are the same between st185s and st165s (...and st182s, and st162s, and st170s...). I'm not certain about the top hats, but I wouldn't be suprised if they were different - although I seem to remember putting some st165 rear struts into my old st185 without any modifications, not even removing the springs.

Losing the camber adjustment is minor, you can get aftermarket adjustment bolts to put in there, or adjustable top hats. In fact provided the camber is within a reasonable range you probably wont ever want to adjust it unless you get onto a track.

Any of the boxes with the viscous coupling wont really have a specific torque split, but it varies toward the least resistance usually (which to me says probably slightly toward the front) but diverts torque to the other end to the squared proportion of speed difference (ie wheelspin). I'd think that older units, or ones that have seen a lot of abuse, will probably be a lot less effective due to wear on the plates and possibly loss of viscousity of the fluid. If you have an 86 then it probably means you have the pneumatic diff lock, so it usually acts like a open diff unless it's locked, then it acts like a locked diff (suprisingly)

[Malcolm]

oh and the rear diff. You will have an open diff, but the st185s and st205s had a Torsen (torque sensing). The behaviour of a torsen is described by their bias ratio: which is basically the maximum ratio of the output torques - so if you're applying 100Nm of torque to a wheel that is slightly slipping, and you have a bias ratio of 3 then you can apply 300Nm to the other side. Unfortunately when one wheel comes off the ground you get no drive at all, because 3x0 is still 0. I'm not sure of what the bias ratio is on the st185s and st205s, but it'll be in the ballpark of 2-4

[Malcolm]

Ps. It's ironic that your name is Mr. Procrastination and I'm procrastinating on studying for my exam tomorrow by answering your questions.

[Mr_procrastination]

yes that is somewhat ironic isnt it.

well torsen lsd beter than no lsd... do the st185 and st205 gear boxes also have front torsens ?

[Malcolm]

no, all gt4s have an open front diff.