Gearing in the Z?
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From: Sterling/Herndon, VA
Gearing in the Z?
I have been talking to some friends and they told me some ways to get a faster quarter mile out of a car is to change the gears/gear ratios. Can someone explain this to me and tell me if they sell anything like this for the Z?
Thanks
Thanks
Are you talking about gearing as in transmission gearing or with differential gearing? You can do both, but I imagine the tranny route to be even more expensive than the differential route.
Maybe I can provide some insight here pretty soon. I've been asken about this for a while, but I finally got tired of no one knowing anything about it so I decided to take the differential approach. I've got a base model so I got the R200 diffierential. I'm grabben a used R200V off of another of this forums members to use as a project to see if I can do a R&P gear swap, aside from also swapping the viscious components into a base R200 housing or the used 350z R200V to save on putting in too much effort :P .
I already salvaged a R200V differential from a 98 240SX. It has 4.083 R&P gear in it. So once I get the 03's R200V I'll see if I can swap out the slow a$$ 3.3xx set with the 4.083 set. IF that works, then I'm gonna grab a '98 240SX 4.636 R&P gear set from Jeff@PerformanceNissan and do the final conversion to have a R200V with 4.636 gears in a 350z.
I'm also considering using the whole '98 240SX R200V and joining the carriers to that diff and seeing if there's a way to mount it. But now that I think about it, that may be too much of a b1tch, and will only consider that if all else fails. Reason I'm looking into the swap is to offset my 20" rims and the inherent drag they have put on my car from going so big & heavy. Modifying to a shorter differential final drive r&p on any car will effectively make the car accelerate faster at the expense of higher revs (which can attribute to worse gas milage). But for a mod in general it can make a big difference. Of course if your going with a FI application you probably don't wanna do this kinda mod. I'm worried if this world is perfect and I can actually swap the 4.083 r&p, that going to the 4.636 will kill my first gear (as in make it rev up to quickly and basically become a detrement to accerlation cause I have to shift a lot earlier). I think with the 20" rims, the 4.636 ratio might be more like 4.4-5 ish. But going from 3.3 to 4.5 is a HUGEEE jump, which might even make the car too easy to burnout
.
I dont know of any1 that has taken any approach with upgrading the final drive ratio on their diff, so I'm finally too impatient of waiting for someone to release some upgrade gears. I'll bite the bullet and see if we can just swap between R200(V) differentials.
Of course, I dont know if the R200V has been drastically re-engineered since the 90's 240SX R200 & R200V, but I'm hoping to the 350z god that the r&p set is still swappable . I'll let you know how it goes once we get some firm answers and also cost estimates if it actually works , plus of course, some driving impressions 
. (Heads up is that a upgrade r&p set from nissan will run ~450-500 bucks if r&p gears are even swappable).
Hopefully this swap will work and will benefit any1 who is NA, or a tracker .
Wish me luck!
--Justin
Maybe I can provide some insight here pretty soon. I've been asken about this for a while, but I finally got tired of no one knowing anything about it so I decided to take the differential approach. I've got a base model so I got the R200 diffierential. I'm grabben a used R200V off of another of this forums members to use as a project to see if I can do a R&P gear swap, aside from also swapping the viscious components into a base R200 housing or the used 350z R200V to save on putting in too much effort :P .
I already salvaged a R200V differential from a 98 240SX. It has 4.083 R&P gear in it. So once I get the 03's R200V I'll see if I can swap out the slow a$$ 3.3xx set with the 4.083 set. IF that works, then I'm gonna grab a '98 240SX 4.636 R&P gear set from Jeff@PerformanceNissan and do the final conversion to have a R200V with 4.636 gears in a 350z.
I'm also considering using the whole '98 240SX R200V and joining the carriers to that diff and seeing if there's a way to mount it. But now that I think about it, that may be too much of a b1tch, and will only consider that if all else fails. Reason I'm looking into the swap is to offset my 20" rims and the inherent drag they have put on my car from going so big & heavy. Modifying to a shorter differential final drive r&p on any car will effectively make the car accelerate faster at the expense of higher revs (which can attribute to worse gas milage). But for a mod in general it can make a big difference. Of course if your going with a FI application you probably don't wanna do this kinda mod. I'm worried if this world is perfect and I can actually swap the 4.083 r&p, that going to the 4.636 will kill my first gear (as in make it rev up to quickly and basically become a detrement to accerlation cause I have to shift a lot earlier). I think with the 20" rims, the 4.636 ratio might be more like 4.4-5 ish. But going from 3.3 to 4.5 is a HUGEEE jump, which might even make the car too easy to burnout
. I dont know of any1 that has taken any approach with upgrading the final drive ratio on their diff, so I'm finally too impatient of waiting for someone to release some upgrade gears. I'll bite the bullet and see if we can just swap between R200(V) differentials.
Of course, I dont know if the R200V has been drastically re-engineered since the 90's 240SX R200 & R200V, but I'm hoping to the 350z god that the r&p set is still swappable
. I'll let you know how it goes once we get some firm answers and also cost estimates if it actually works , plus of course, some driving impressions . (Heads up is that a upgrade r&p set from nissan will run ~450-500 bucks if r&p gears are even swappable).Hopefully this swap will work and will benefit any1 who is NA, or a tracker
. Wish me luck!
--Justin
Last edited by Juztin; Sep 25, 2003 at 11:44 AM.
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Joined: Oct 2002
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From: Arizona
Rearend swap
Juztin, I swapped differentials out back in April. I have the 5AT and I grabbed one from a wrecked 6MT w/only 1350 miles on it. Granted, it (3.35 to 3.54) is not the huge jump in ratio that you are talking about, but it did get me my lost 2/10's back from going to 18" 275/40's from oem 17"s.
I now have nearly 39,000 miles and all is well, but I will be watching your posts closely to see if going to even higher (numerically) gears can be done, 'cause I will be the next in line to make another gear swap! Regards, Jim
I now have nearly 39,000 miles and all is well, but I will be watching your posts closely to see if going to even higher (numerically) gears can be done, 'cause I will be the next in line to make another gear swap! Regards, Jim
Originally posted by Juztin
Are you talking about gearing as in transmission gearing or with differential gearing? You can do both, but I imagine the tranny route to be even more expensive than the differential route.
Maybe I can provide some insight here pretty soon. I've been asken about this for a while, but I finally got tired of no one knowing anything about it so I decided to take the differential approach. I've got a base model so I got the R200 diffierential. I'm grabben a used R200V off of another of this forums members to use as a project to see if I can do a R&P gear swap, aside from also swapping the viscious components into a base R200 housing or the used 350z R200V to save on putting in too much effort :P .
I already salvaged a R200V differential from a 98 240SX. It has 4.083 R&P gear in it. So once I get the 03's R200V I'll see if I can swap out the slow a$$ 3.3xx set with the 4.083 set. IF that works, then I'm gonna grab a '98 240SX 4.636 R&P gear set from Jeff@PerformanceNissan and do the final conversion to have a R200V with 4.636 gears in a 350z.
I'm also considering using the whole '98 240SX R200V and joining the carriers to that diff and seeing if there's a way to mount it. But now that I think about it, that may be too much of a b1tch, and will only consider that if all else fails. Reason I'm looking into the swap is to offset my 20" rims and the inherent drag they have put on my car from going so big & heavy. Modifying to a shorter differential final drive r&p on any car will effectively make the car accelerate faster at the expense of higher revs (which can attribute to worse gas milage). But for a mod in general it can make a big difference. Of course if your going with a FI application you probably don't wanna do this kinda mod. I'm worried if this world is perfect and I can actually swap the 4.083 r&p, that going to the 4.636 will kill my first gear (as in make it rev up to quickly and basically become a detrement to accerlation cause I have to shift a lot earlier). I think with the 20" rims, the 4.636 ratio might be more like 4.4-5 ish. But going from 3.3 to 4.5 is a HUGEEE jump, which might even make the car too easy to burnout .
I dont know of any1 that has taken any approach with upgrading the final drive ratio on their diff, so I'm finally too impatient of waiting for someone to release some upgrade gears. I'll bite the bullet and see if we can just swap between R200(V) differentials.
Of course, I dont know if the R200V has been drastically re-engineered since the 90's 240SX R200 & R200V, but I'm hoping to the 350z god that the r&p set is still swappable . I'll let you know how it goes once we get some firm answers and also cost estimates if it actually works , plus of course, some driving impressions . (Heads up is that a upgrade r&p set from nissan will run ~450-500 bucks if r&p gears are even swappable).
Hopefully this swap will work and will benefit any1 who is NA, or a tracker .
Wish me luck!
--Justin
Are you talking about gearing as in transmission gearing or with differential gearing? You can do both, but I imagine the tranny route to be even more expensive than the differential route.
Maybe I can provide some insight here pretty soon. I've been asken about this for a while, but I finally got tired of no one knowing anything about it so I decided to take the differential approach. I've got a base model so I got the R200 diffierential. I'm grabben a used R200V off of another of this forums members to use as a project to see if I can do a R&P gear swap, aside from also swapping the viscious components into a base R200 housing or the used 350z R200V to save on putting in too much effort :P .
I already salvaged a R200V differential from a 98 240SX. It has 4.083 R&P gear in it. So once I get the 03's R200V I'll see if I can swap out the slow a$$ 3.3xx set with the 4.083 set. IF that works, then I'm gonna grab a '98 240SX 4.636 R&P gear set from Jeff@PerformanceNissan and do the final conversion to have a R200V with 4.636 gears in a 350z.
I'm also considering using the whole '98 240SX R200V and joining the carriers to that diff and seeing if there's a way to mount it. But now that I think about it, that may be too much of a b1tch, and will only consider that if all else fails. Reason I'm looking into the swap is to offset my 20" rims and the inherent drag they have put on my car from going so big & heavy. Modifying to a shorter differential final drive r&p on any car will effectively make the car accelerate faster at the expense of higher revs (which can attribute to worse gas milage). But for a mod in general it can make a big difference. Of course if your going with a FI application you probably don't wanna do this kinda mod. I'm worried if this world is perfect and I can actually swap the 4.083 r&p, that going to the 4.636 will kill my first gear (as in make it rev up to quickly and basically become a detrement to accerlation cause I have to shift a lot earlier). I think with the 20" rims, the 4.636 ratio might be more like 4.4-5 ish. But going from 3.3 to 4.5 is a HUGEEE jump, which might even make the car too easy to burnout
. I dont know of any1 that has taken any approach with upgrading the final drive ratio on their diff, so I'm finally too impatient of waiting for someone to release some upgrade gears. I'll bite the bullet and see if we can just swap between R200(V) differentials.
Of course, I dont know if the R200V has been drastically re-engineered since the 90's 240SX R200 & R200V, but I'm hoping to the 350z god that the r&p set is still swappable
. I'll let you know how it goes once we get some firm answers and also cost estimates if it actually works , plus of course, some driving impressions . (Heads up is that a upgrade r&p set from nissan will run ~450-500 bucks if r&p gears are even swappable).Hopefully this swap will work and will benefit any1 who is NA, or a tracker
. Wish me luck!
--Justin
Hey there JimH
Did you end up swapping the entire differential housing, or just like a "core" swap? From the sounds of it sounded like you did indeed do a entire differential housing swap, was there anything you had to do to get it to fit, or was it noted to just fit right in?
Even if one wasn't to go with 4.636, 4.083 is still pretty nice of a gain and not overly aggressive for the street. I think there is also a gear upgrade inbetween 4.083 & 4.636, 4.444 if I'm correct. If it's possible... fun times indeed
Patiently waiting for diffs to get here....
--Justin
Did you end up swapping the entire differential housing, or just like a "core" swap? From the sounds of it sounded like you did indeed do a entire differential housing swap, was there anything you had to do to get it to fit, or was it noted to just fit right in?
Even if one wasn't to go with 4.636, 4.083 is still pretty nice of a gain and not overly aggressive for the street. I think there is also a gear upgrade inbetween 4.083 & 4.636, 4.444 if I'm correct. If it's possible... fun times indeed
Patiently waiting for diffs to get here....
--Justin
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