Comments Off
It is a common belief in the aftermarket that there are two different 8″ Toyota Ring and Pinions – the “V6″ and the “4cyl”. Whilst it is true that there are two different designs, the name given is misleading.
In actuality the Ring and Pinions that most refer to as a “4Cyl” are simply the thinner 85 and older pinion head design. The Ring and Pinions that most refer to as the “V6″ are actually found in all 86+ 8″ diffs, regardless of engine type. The actual difference between the V6 and 4CYL vehicles is that the V6 does have a different housing and different pinion and carrier bearings.
The above pic shows the difference in the pinion head length between the two types of ring and pinion.
The above pic shows the difference in the bearing thickness between the two types of ring and pinion.
Our main differential supplier, Nitro Gear have superseded the older type of ring and pinion for a number of reasons :
1. The older style pinion head is smaller and offers less material and strength.
2. 1985 is a long time ago and there are more vehicles out there using the 86+ style.
3. Less part numbers make inventory and ordering more simple.
So if you have an older model Toyota 8″ you just need to use the appropriate 86+ pinion bearing when installing your ring and pinion. Toyota part number for the correct bearing is 90366-35044
Info and images supplied by Nitro Gear
