Ja1lb8 Posted March 30, 2021 Share Posted March 30, 2021 Can anybody help me with what diff is in a old Hiace van Ive been looking at? Just picked up a diff out of an old Hilux G142 code on the tag so G series 4.875 ratio 2 spider non lsd, easy. Looking at this Hiace and on the Tag under Trans/axle it says "UNIT.521." and 0-12 further across from it. 1980 model with an 18r in it Any help would be great cheers Quote Link to comment Share on other sites More sharing options...
kpr Posted March 30, 2021 Share Posted March 30, 2021 I could be wrong but thought they all come with G codes. nz assembled vehicles often come with nothing written on the plate under trans/axle, or some kinda gibberish. If you have the chassis code, plugging it into toyodiy or the likes may give you some more info 1 Quote Link to comment Share on other sites More sharing options...
jayz383 Posted March 31, 2021 Share Posted March 31, 2021 A stock car mate told me you can tell ratio on them by the color of the pinion nut? He said a while ago I needed the pink 1 I think it was and sure enough, it was. 4:11 from memory but it was a while ago. Anyone else know? Quote Link to comment Share on other sites More sharing options...
zep Posted March 31, 2021 Share Posted March 31, 2021 Does this help at all? https://rsmotorsport.com.au/files/Identifying_Toyota_Hilux.pdf Quote Link to comment Share on other sites More sharing options...
AllTorque Posted March 31, 2021 Share Posted March 31, 2021 Quote Link to comment Share on other sites More sharing options...
Ja1lb8 Posted March 31, 2021 Author Share Posted March 31, 2021 Thanks for the input guys. It's just round the corner so might as well just pull it out and then well know for sure. Quote Link to comment Share on other sites More sharing options...
holdenman Posted April 3, 2021 Share Posted April 3, 2021 You can usually use the turn the and count method, the driveshaft will turn 4.1 or 4.7 turns for every single turn of you rear wheel. I have a couple in the shed so so went and had a look and both LSD 4.1=Blue 3.7=Orange could this be just the pinion tooth number as I assume like others they mix and match pinion with different crown wheels to achieve various ratios, I am sure someone will know more and help not just you but me as well. Quote Link to comment Share on other sites More sharing options...
Testament Posted April 7, 2021 Share Posted April 7, 2021 On 04/04/2021 at 08:21, holdenman said: I assume like others they mix and match pinion with different crown wheels to achieve various ratios, I am sure someone will know more and help not just you but me as well. no a pinion gear and crown gear/ring gear in a hypoid/spiral bevel gearset are a matched set. you can have a pinion gear with the same number of teeth as another for a different ratio and they wont match as the geometry is different (the angle on the spiral will be different). then ontop of that they are matched to fit each other closely to minimise shims/adjustments required as well was being the correct geometry. tl;dr e.g. a 9 tooth pinion from a 37/9 (4.11) set wont properly fit with a 41/9 (4.56) ring gear and you shouldn't mix and match pinions and ring gears from separate diffs. it might work if you are in deepest africa and have no other choice - but its not correct, and you will probably have a bad time trying to setup the gears correctly to last and take high loads without failing. Quote Link to comment Share on other sites More sharing options...
holdenman Posted April 7, 2021 Share Posted April 7, 2021 cheers, i see, I know not to mix them but never really gave it much thought about the angle of the dangle being a little different Quote Link to comment Share on other sites More sharing options...
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