Outer Limits 4x4 Board

i am getting nitro diff gears for the front of my 80, has anyone here used nitro chromo axles and cvs. do they hold up with a locked diff , 35's and a heavy right foot.

Get longfields awesome warranty! Have them in my 80s diff on 42"s

I have fitted new nitro gears to my 80 (C&P). There seems to be too much slop in the drive shaft. I took it back and was told that after market gears arent as good or true as genuine gears. And also old axles have slop in them aswell. Is that all true????

Slop? Backlash? If there is too much backlash, they have been setup incorrectly or bearing preload isn't there. I built some Nitro geared diffs and they setup spot on, but cant comment on the noise as I havent run them yet.

evanstaniland wrote:Get longfields awesome warranty! Have them in my 80s diff on 42"s

nitro's are a bit cheaper but I cant find any warranty info, longfields will be the go. will the longfields fit ok in a full time 80 changed to part time with avm HP hubs, what brand gears are you using?

The AVM hubs will be the weakest link.

vk7ybi wrote:Slop? Backlash? If there is too much backlash, they have been setup incorrectly or bearing preload isn't there. I built some Nitro geared diffs and they setup spot on, but cant comment on the noise as I havent run them yet.

Yep, in 1 spot there is hardly any backlash. Roll the car forward so the drive shaft rotates 180. There is twice as much.

TheBigBoy wrote:

vk7ybi wrote:Slop? Backlash? If there is too much backlash, they have been setup incorrectly or bearing preload isn't there. I built some Nitro geared diffs and they setup spot on, but cant comment on the noise as I havent run them yet.

Yep, in 1 spot there is hardly any backlash. Roll the car forward so the drive shaft rotates 180. There is twice as much.

sounds like the ring gear is running out. it should be within 0.1mm

About to fit nitro gears into my lux. 5.29. Just waiting to get my install kits. I only running normal cvs axles for now but will go long fields in the front when I get sick of changing cvs

80'sman wrote:

evanstaniland wrote:Get longfields awesome warranty! Have them in my 80s diff on 42"s

nitro's are a bit cheaper but I cant find any warranty info, longfields will be the go. will the longfields fit ok in a full time 80 changed to part time with avm HP hubs, what brand gears are you using?

I have nitro gears haven't had a drama, I'd personally save a bit mire and get the longs!

Thanks for the input fellas. I have decided nitro gears and longfield axles.

How do nitro gears compare with trail creeper gear sets?

Matt

I've setup a couple of diffs running nitro R&P's. I reckon they are a good bit of gear. ZUK from gearinstalls.com seems to rate em to and u can't argue with that. I've got a set of 5.29's ready for my next 60. Can't comment on their axles though.

Backlash should be set at 0.2mm (8 thou) on new gears too.

Read alot of zuks gear installs, good info.
Best to pay a bit more for quality and ease of set up and go the nitro gears, thanks.
Bigboy the 80's can get worn cv splines and drive flanges aswell.

Matt

Frankenyota wrote:Read alot of zuks gear installs, good info.
Best to pay a bit more for quality and ease of set up and go the nitro gears, thanks.
Bigboy the 80's can get worn cv splines and drive flanges aswell.

Matt

Its in the rear diff. New gearbox, transfer, drive shaft. Only thing old is the axles.

Missed that bit, forget the cv's then.
[quote]Yep, in 1 spot there is hardly any backlash. Roll the car forward so the drive shaft rotates 180. There is twice as much.[/quote]

Maybe there isn't enough carrier bearing preload or run out in the carrier itself?

Matt

word on the street is that yukon gears are the go, even better if you get them cryo'd by bobby long. and when it comes to something like a cv, why skimp, buy the best and you dont have to stress