ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum
ZUKIWORLD Discussion Forum => Technical Discussion - Performance / Modify => Topic started by: ColtonP on September 28, 2010, 01:42:09 PM
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Ok here the deal my stock 4.30 diff roars while driving. Wanna swap it BUT!!! I was thinking about doing a 5.12 diffs front and rear I have a 1995 geo tracker lsi 1.6 16v 3 speed automatic transmission. How will it run with 5.12s and 30 inch tires. Can't make tires bigger no more lift Thanks
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Should be a good combo, now get off the computer and do it already. No one can tell you if you will like the end result so do it, drive it, change it if you don't like it!..... EZ!
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perfect combo for on and off road in my opinion.
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The decision point for you would seem to be if you use your truck for a daily driver or not. If it isn't then go with the 5.12s and enjoy the extra power the taller gears will give you. On the other hand if you log a lot of highway miles you might not want the extra RPMs (and extra fuel cost - especially if the prices spike again) all the time and might be happier with a set of 4.62s or even 4.88s. Both will get you back closer to your original mechanical advantage. 30" tires are only a 3 inch jump over stock diameter tires, providing they are actually a full 30 inch diameter tire and they are only slightly heavier. Decide what you use your truck the most for and go for it.
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I also run stellies will that have a big effect
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These trucks came with 5.5" steelies. Another inch or so of width will add a couple pounds or so. I've ran 235 series tires on my trucks for years. I put a set of BFG AT KOs with 3-ply sidewalls on my red one. I could feel the difference in the ride (partially due to stiffer side walls). If your truck is pulling your 30s on steelies now with 4.30 gears... it will just pull them better with taller gears. You will just be regaining some of the original mechanical advantage you lost when you went with the taller tires. It will probably be a day and night difference when you make the change over how it is running now.
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I'd go 4.88 if it's a mixed use DD ride and 5.12 if it was used more than 50% off road.
as said, 4.30 only if you cruze the highway a lot.
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I see 4.88 listed as a gear ratio quite often, but who makes a 4.88 for
a Sidekick? never seen them offered, not that I would want one but?
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2nd Gens Trackers with auto trannys came with the 4.88 gears (except for the '99 year 2-door models that came equipped with with the 1.6 Liter engine (instead of a 2 liter) and they still had the 5.12 gears). The manual tranny trucks came with the 4.62s and the 2 liter engine.
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What is considered 2nd gen ? Do they have abs? And if they do do I have to wire them I don't have abs.
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The 99-up Tracker/ Vitara/ Grand Vitaras are 2nd Gen.
The 5-speed / 4.30 gears are the rarer ones.
Almost every one you look at will be an auto with the 4.88
The ABS was only an option on the tracker and standard on the Vits.
It's out on the hub anyway.
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If it was my choice I'd do the 5.12's unless you just want the challenge finding some ultra rare gears. what happens when you smoke one of those 4.88's? ???the 5.12's are everywhere and cheap. also they used them by Suzuki in most sidekicks and some trackers for a reason IMO. ask a few who have them stock and added 30" tires its still not low enough.
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i have a 5spd 5.12 kick with 31's. it runs the highway fine (still accels up to speed and hold it the same as any other day) im compairing this to 235/75r15's which are my street tires. takes some downshifting to get up the long hills (getting low in 4th going into 3rd, where as the 235's i could keep up the hill in 4th, but its getting low) dont expect it to be a monster on the highway if you commute with it, but they can still motor along at speed.
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My thing is isn't my 3 speed auto trans lower then the 5 speed manuals. Won't that have a massive effect on how much it pulls
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I run 30 tires with a set of 4.625s and it works well as a DD/offroad Samurai. Stock t-case gears.
I run 4k at 65MPH...
5.12s might be better offroad but the engine would run at higher RPMs on the road.
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Personally, I don't think there will be a shortage of 4.88 gear sets in the foreseeable future. Virtually every 2nd Gen Tracker sold is an auto tranny with 4.88 gears. I really don't know what the exact ratio of autos versus manuals sold was but I would guess it was somewhere in the area of 1 manual tranny truck for every five or even six auto tranny Trackers. Check out Cars.com and other used vehicle web sources, search "Trackers" and check it for your self. See how infrequently a manual tranny truck is up on the market blocks for sale. Not sure of the GV ratio or the added variables of R&Ps they came with, but I'll bet the manual tranny to the auto tranny sold is about the same for the GV as well.
I think one of the plusses for the 2nd gen trucks is you can still go to 4.88s or 5.12s (if you had a manual tranny truck with 4.62 gears) to regain your mechanical advantage when running larger tires. With most of the first Gen trucks you start out with 5.12s because the 1.6 liter engine needed this large mechanical advantage just to turn the tires to start with because they only produced 80-96 HP depending on whether it was an 8 valve or 16 valve engine. Since Calmini doesn't sell the 5.83 ring and pinions anymore owners are pretty much reduced to finding the truly rare 5.38 and 5.62 gear sets OR going with a Toyota axle conversion which is pricey. One of the guys on the forum (Skyhiranger... I think) has at least a set of each of these gears for sale and he's asking $500 for a set of the 5.38s and $1000 for a set of the 5.62s. Actually not bad prices for what the gears can do for your truck... if you have the cash for them.
Course the 2nd gen trucks came with the air actuator in the front diffs which limits their upgrade ability. You can run taller gears but you have to change the diffs and other front end components to entertain running lockers. The last 1st Gen Tracker was the 1998 model year. That makes that Truck 12 years old now and getting older each day. They will soon disappear from the road and the 2nd gens will start becoming more affordable to buy and upgrade for just trail riding. Hope the aftermarket companies continue to produce new upgrades for these 2nd gen trucks. They are the market place future for Suzuki 4X4 SUVs within the next 10 years, I think.