2005-2007 Pathy final drive

Ok, this confuses me and I've heard it a lot of different ways.

Is 3.54 low or high? I would assume 3.54 would be low and 3.9 would be high.

I've heard it a couple of ways, low/high (which yes is confusing because the number is low, yet maximum speed attained is higher), and short/tall.

I prefer the short/tall expression because it is alot more straight forward and makes sense to (I assume) more people. These would be VERY tall gears, probably push a 6500 redline close to 180mph (ROUGH guestimate, no calculations made what-so-ever)

I call 3.54 low because it's a lower number and your engine turns a lower number of turns to reach a speed. Just makes sense.

"Lower" has a higher numerical number. "Higher" has a lower numerical number.

Low gearing would be for example 4.88s and higher would be 3.54s.

Hence why I still prefer short/tall, lol. I guess I have a question in here as well. Since this is the final gear for an r200, all that would be required to acheive this ratio would be the…big ring around the outside of the spider gears…DAFUQ is that one called again, drawing a blank at he moment…


EDIT: I got it, Google saved me. The ring gear DERP.

That's what I hated about my pathfinder. Had it had a better rear gear I wouldn't have sold it.

So correct me if I'm wrong, but if I wanted the taller ratio I would just need to either pilfer the ring gear from the correct pathy in a JY, or order JUST the ring gear from Nissan? I know the final ratio has something to do with the number of teeth on the ring gear, combined with…the number of teeth on the spider gears??? (I think) Do all r200's have the same number of spider gear teeth?

the ratio is the number of turns the pinion has to make to turn the ring gear once. For example, 3.54:1 means the pinion has to turn 3.54 times to net 1 revolution of the ring gear.

you shouldnt mix and match ring and pinions.They should be used in sets.

http://www.ka24development.com/vlsd.html

About 1/4 of the way down the page its explained that you can calculate the final drive ratio based off the number of teeth on each gear, so depending on how many teeth are on our output gear vs that nice tall pathy output gear, one would assume that the same number of teeth would net us the same ratio without buying both gears.

As to not mix and matching, is this generally a bad idea due to potential gear angle and height of the teeth and other minute details that could cause a binding issue? Is there a way to find out exactly what the profile of the output gear is to judge whether buying both is necessary?

Each diff will have a number stamped on the ring gear, it will tell you how many teeth on the ring and pinion, then you do maths to find out the ratio

Like 37/9 or 39/11 etc

Either or I think the 3.133 will not work. Most nissan's are shortnosed R200s

The Pathy R200's are short nose. You can use them in the Z31 rear crossmember, but will need to get creative on attaching it properly and lengthening the driveshaft.

If you had a S-chassis swap, it might be easier to swap into one of those rear setups.

you're asking about the 3.36 R200 in the 280zx turbo+auto. there was also an R180 version in the 260z.

http://www.geocities.com/inlinestroker/ratio.html