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This might have already been brought up before, but I am getting ready to install some gears for the front and rear of '86 4cyl Runr. A lot of guys have told me to use 4.88's w/33" tires, but just as many people told me to use 5.13's w/33's. So which should I use. I know there is a mathmatical calculation to figure this out, but I don't know that either. I am not a hard core rider, so the gears don't need to be too low, I just want to retain my factory settings. Thanks. <IMG SRC="smilies/usa.gif" border="0">
 

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I'd say "do a search!!!" but I'm still technically a Newbie around here.... <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/rolleyes.gif" border="0">

auto or manual? auto, 5.29's, manual 4.88's.

5.13's are not available for toy axles.
bkg
 

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they say 4.88 work perfect! for a manual tranny! <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">

we need a picture of bin laden to go with the <IMG SRC="smilies/nuke.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0"> don't you guys think!
 

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Definatly 5.29's. Reason being, I had 4.88's and while they worked well, I'm going to 5.29's with my SAS and already have the rear 3rd in and it is noticably better on road, and I can hold 70-75 mph no problem were before it seemed like I was struggling.
 

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'86, are you still IFS or SAS? If your still IFS, save your money and convert. If your SAS, 5.29. Do it right once, and save money. Patience is a virtue.
 

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Originally posted by BrianR:
<STRONG>'86, are you still IFS or SAS? If your still IFS, save your money and convert. If your SAS, 5.29. Do it right once, and save money. Patience is a virtue.</STRONG>
I'm IFS right now, but will be torching it within the month. I have no 4WD right now, just 5.29 rears and I had 4.88's before that. I got a good deal on F/R axles with 5.29's and lockers so I sold the 4.88 3rd and installd the 5.29...I think that's enough info now.. <IMG SRC="smilies/biggrin.gif" border="0">
 

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So what about me? I have 33's, 3.0, and an auto tranny. What should I get? I want to return my speedo to near stock with these, and re-gain my original "performance" so I don't need crazy low gears.
 

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Originally posted by 4Runner Josh:
<STRONG>So what about me? I have 33's, 3.0, and an auto tranny. What should I get? I want to return my speedo to near stock with these, and re-gain my original "performance" so I don't need crazy low gears.</STRONG>
Not for certain, but you may have 4.56's stock with an auto and a 3.0. 4.88's IMHO won't gain you enough to offset the cost, so if you have this set up, either leave it stock, or go to a 5.29. If you are running 4.10 or 4.30, I lean more towards the 4.88's to get it back to stock, etc.
 

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Do you just want to regain "orginal" performance, or would you like some extra grunt, so when you go to 35's you don't have to do it again. Figure it out.
 

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Originally posted by 4Runner Josh:
<STRONG>So what about me? I have 33's, 3.0, and an auto tranny. What should I get? I want to return my speedo to near stock with these, and re-gain my original "performance" so I don't need crazy low gears.</STRONG>
You could already have 4:88, some of the runners came with them. Check it out. Ballpark way to do it is to set rear end on stands with the tires off the ground, put the tranny into nertual, put a mark on the d-shaft, turn the tire one full turn and count the number of turn the d-shaft turns. If it goes four full turns and a little more then 3/4 turn you have 4:88's. There is also some type of codeing that tells you what the gear ratio in the rearends but I do not know what it is, someone out here does thought. This web site may help you out. http://www.off-road.com/toyota/tech/other/4_axles.html

<IMG SRC="smilies/usa.gif" border="0"> <IMG SRC="smilies/usa.gif" border="0">

[ 10-19-2001: Message edited by: OOPS ]
 

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I have checked via the axle code, and I have 4.10's. I plan to do 35's, bu not until I do my SAS. I don't see that in less then 4 years, so I think the 4.88's seem to be the option for now.
 

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Discussion Starter #15
Well you see how much I know, I just assumed 5.13s were available for toy axles because every single person I know is telling me to put them in my toy. Does anyone know the math equation to check what gear size you need? Someone did it for me and he said I need 5.13s.

If 5.13s are not even made for toy axles, how come every single person I've talked to about it said I need 5.13? Are they stupid or what. Every person I've talked to knows this stuff like the back of their hand, so am I going crazy listening to them?? If you guys say so, then I am going to run 4.88's with 33's on my '86 5sp, 4cyl, Runr. Thanks for all your help.
 

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Originally posted by Bones:
<STRONG>Definatly 5.29's. Reason being, I had 4.88's and while they worked well, I'm going to 5.29's with my SAS and already have the rear 3rd in and it is noticably better on road, and I can hold 70-75 mph no problem were before it seemed like I was struggling.</STRONG>
Did you change your speedometer drive gear when you put the 5.29 in, or are you measuring your speed with something other than the speeometer? if not then you're probably holding more like 65-70 because your speedo is reading fast. You're also feeling more power because 33s are a tad bit small for 5.29s (so I've seen on gear/tire charts) if you put your tiny stock 28"ish tires on you should feel lots more power... although if you need some lower gearing I guess thats a good simple way to get it,
 

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Originally posted by 4Runner Josh:
<STRONG>So what about me? I have 33's, 3.0, and an auto tranny. What should I get? I want to return my speedo to near stock with these, and re-gain my original "performance" so I don't need crazy low gears.</STRONG>
Okay ... I'm in the same situation too ... I would like to hear from those who are automatic V6, going to run or are already running 33's with 4:88's. How's the gas mileage hwy/city and how far is your speedo off (-/+ mph)??? <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/rolleyes.gif" border="0">

[ 10-20-2001: Message edited by: RCRunner ]
 

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Discussion Starter #19
87 runner/35/16/15 boggers,22re,5spd.70-75mph from Folsom-Placerville.no problem,better performance with 33's.
So what gears are you running?
 

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ok here's the formula new tire size divided by orginal tire size multiplied by orginal gear ratio. for example if your orginal tire size was 28" and you went with a 33" tire and your gear ratio is 4.10 it would be
33 divided by 28 x 4.1= 4.84
so 4.88 would be your choice of ratios.
I don't know how tall toyota orginal tires are I was just using 28" as an example but I think that is pretty close to stock.
 
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