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How Does A Car Drive With A 1.5 Diff?

morphd
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Duncan Grand Master

Duncan

Posted
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well. yes kind of. it depends how tight it is and how tolerant you are of the noise.

basically, if it is tight it will "skip" in tight turns at low speed, eg every time you park in the Woolies car park. Personally it didn't worry me because the on track performance was so good, but mothers with strollers used to look at me like I was the devil

evil_weevil Grand Master

evil_weevil

Posted
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sorry to hi-jack - but whats a good to average 1.5 diff cost these days?

but mothers with strollers used to look at me like I was the devil

Duncan - dont blame them :happy:

Duncan Grand Master

Duncan

Posted
Posted

yeah under 20 or even slower. at quicker speeds the wheels can sort themselves out and turns dont tend to be as tight.

yes you can tighten a mechanical diff by adding or changing shim thickness. but aftermarket ones will already be pretty tight

Duncan Grand Master

Duncan

Posted
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yeah under 20 or even slower. at quicker speeds the wheels can sort themselves out and turns dont tend to be as tight.

yes you can tighten a mechanical diff by adding or changing shim thickness. but aftermarket ones will already be pretty tight

bradsm87 Proficient

bradsm87

Posted
Posted
Can you heel and toe?..

I know its quite hard to keep a 1.5 in cheak when you give it a hiding or in the wet and you dont heel and toe down gears.. compression lock up is a biatch..

Do u mean compression lock is a bitch on a 1.5way compared to a viscous diff or compared to a 2way?

If anyone wants a nice quiet streetable diff, go no further than a Nismo GT LSD Pro TT-Model 1.5way. It's the 'softer' model than the rest.

bradsm87 Proficient

bradsm87

Posted
Posted
yeah i was looking into the Nismo GT LSD Pro TT-Model 1.5way, would anyone happen to know the life span of these diff before a rebuild is needed???

A lot longer than other diffs. 1) Because as they wear, you can adjust the preload to compensate and 2) they have a lower overall clamping force on the clutches than other diffs.

shoei Explorer

shoei

Posted
Posted
well looks like the diffs going in

thanks alot guys

cheers

if its a daily driver keep the viscous diff!!!

mine went from daily driver to weekend car as soon as the 1.5 way kaaz went in, but the nismo sounds nice

if i were you, i would take a ride in a car with a mech diff before you decide, its not the skipping thats the problem, its the *CLUNK CLUNK*, very loud!

and then you gotta try and convince everyone that its normal

morphd Contributor

morphd

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if its a daily driver keep the viscous diff!!!

mine went from daily driver to weekend car as soon as the 1.5 way kaaz went in, but the nismo sounds nice

if i were you, i would take a ride in a car with a mech diff before you decide, its not the skipping thats the problem, its the *CLUNK CLUNK*, very loud!

and then you gotta try and convince everyone that its normal

??? Great back to square one???

thanks for the heads up champ

Any one else like to comment?

BHDave Grand Master

BHDave

Posted
Posted

Just a couple of quick ones:

i also agree that you don't want a 1.5 way in a daily driver, particularly if you have any sort of subframe bush upgrades, pinapples or alloy collars. I'm sure people do it and are happy to do it but i think thats what pushed mine over the edge as far as being a nice car to drive around in.

Re the nismo wearing less and having adjustable preload. If it slips more (less preload) it wears the plates more. It's not infinitely adjustable either, there are 3 levels of preload so if it wears and you bump up the preload to the next step it's actually a bit of a jump, rather than a tweak. To tweak it you'd need to get it apart.

As an alternative, maybe consider a GTR rear end, they are a mechanical type lsd, 1 way and a bit looser than your average aftermarket diff so much nicer in the day to day grind, or even a torsen out of an s15. both options require a bit of work though and a few more bits swapped

Abo Bob Grand Master

Abo Bob

Posted
Posted

They are a two way, not one way. I used to have a Nismo 1 way and it was very obnoxious. You do get used to it and you learn to drive around it a bit but everyone does look at you funny, which I quite enjoyed. Still, some days, maybe I was a bit tired or cranky, it would annoy me a lot. Now I have a full GTR rear end and it's much nicer on the street. The lock up on the track isn't as good but overall I would say that it's a better compromise for a street car.

To do this you need the diff centre, housing, half shafts, drive shafts and hubs from an R32 GTR. It all bolts up. I got the lot with rear subframe for $700 from a mate. SSS wanted $1200 so somewhere in between there is your window.

That said, I agree that you should get someone who has a 1.5 way or 1 way to take you for a little drive so you can see what it's like. Any old SAU type event should do or post up where you are and maybe someone from here lives nearby.

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