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Freedom92 02-28-2014 08:08 AM

Diesel Geo Tracker conversion
 
Wasnt real sure as to where to post this question. I want to do a 3 or 4 cylinder Kubota diesel conversion on a 2wd Tracker. My problem is the rear end ratio bei g too low geared. Are there ring and pinion sets in the 3.23-3.73 range or even a complete rear end swap from another vehicle? The 4.65s are just too low geared to reach my target of 2200 rpm @ 70 mph. Ideas and thoughts are most welcomed.

oil pan 4 02-28-2014 10:45 AM

Is that even possible? Make enough power with a kubota at that rpm to go 70mph?
In factory configuration most of the 3 cylinder engines are around 1L or less and only make 10 to 12 horsepower.
Now if you turbocharged it then you would get another 10 to 20 % more horsepower and fuel economy.
I think you might need more horsepower if you want to maintain the speed limit on anything but level or down hill ground. Every 1% of grade increases power requirement around 20% to maintain your speed at 60 to 65 mph.

Freedom92 02-28-2014 11:03 AM

Well I know it will fit and the reason it wont go any faster is because of the gearing being too low. I will most likely use a v2203 which is actually a little bit of over kill in a vehicle that light. It will push a Ranger 4x4 weighing in at 4200lbs at 80+ mph and still get over 40 mpg. I just need a higher gear in this Tracker and if its not feasable Im going with a Ranger or an Explorer.

oil pan 4 02-28-2014 05:41 PM

I know you can do gear swaps in ranger, there are a few different axles you can swap out from various years to get close to the desired gear with out breaking into the diff.

Since GM, the king of rebadge and parts bin engineering made the tracker there has to be rear gear out there in something else that will fit it. A few people have modded them on here but I don't know if a gear swap was among their mods.

Where you going to get that 2203 motor?

oldtamiyaphile 02-28-2014 08:33 PM

With a bit of work you can swap any live axle into any live axle car. If you have the skills to do an engine swap this shouldn't be an issue.

elhigh 02-28-2014 08:56 PM

My Toyota came equipped with 3.73 gears. I don't know how hard it would be to cut down an axle to fit under your Tracker, but there's lots of Toys out there.

Here's a page that lists Toyota axle codes so you know what ratio you're looking at.

Kubota's current 1803 engine is a 1.8l 3-cyl rated at 28hp at 2700rpm. The V2203 is a little older, a 2.2 4-cyl rated at about 48hp, but that's the NA version. I don't think it was available factory turbo, but that doesn't mean it can't be done.

Freedom92 02-28-2014 09:38 PM

Quote:

Originally Posted by oil pan 4 (Post 413107)
I know you can do gear swaps in ranger, there are a few different axles you can swap out from various years to get close to the desired gear with out breaking into the diff.

Since GM, the king of rebadge and parts bin engineering made the tracker there has to be rear gear out there in something else that will fit it. A few people have modded them on here but I don't know if a gear swap was among their mods.

Where you going to get that 2203 motor?

Not sure where Im going to get the motor. There are suppliers in MO and TX that Ive looked at. I would like to find one locally here in Tulsa but Im not afraid to go get one within reason. My plans are to do both a Ranger 4x4 and I found a slick Tracker with a bad motor that I would like to try a 3 cylinder kubota in...if I can get the gear ratio to the 3.55 range

oil pan 4 03-01-2014 09:32 AM

If no one knows of a source of gears for that tracker then swapping in another axle from something else might be be the only way to get it.

I never got to work on a kubota in the 40hp+ range, anything that big had a toyota.

Freedom92 03-01-2014 11:18 AM

Quote:

Originally Posted by oil pan 4 (Post 413191)
If no one knows of a source of gears for that tracker then swapping in another axle from something else might be be the only way to get it.

I never got to work on a kubota in the 40hp+ range, anything that big had a toyota.

Thats kinda where Im at now on this. It would be an awesome swap if it werent for the gearing being too low. I guess at this point I need to know what rearend would be the best fit for the job. Ratio needs to be in the 3.31 to 3.55 range. Could even be 3.00 and I could adjust with tire diameter.

Christ 03-01-2014 11:28 AM

You can get a 3.55 from an Explorer with LSD and discs. There's 3.55 as a pretty standard ratio in almost everything. 3.07 is also readily available in many vehicles. You can also go for as low as a 2.73 in Ford 8.8".

Anything that you want to put under your tracker will prob have to be shortened. There are also a few other IRS style rears with different gearing as well that will be lighter than a live axle.

I think the power of a 2.2 is prob excessive for what you need unless you plan on going 75-80 everywhere all the time. The tracker isn't terribly heavy, but there is a lot of excess weight in it that can easily be swapped for lighter parts, especially if you're not keeping the 4x4.

Freedom92 03-01-2014 03:48 PM

Its a 2wd and yes I agree that a 2.2 might be excessive. At the same time Im afraid that a 3 cylinder 1liter might even be too small. Im not real sure how it would even respond to turbo charging either. Ideally I would love to go with the smaller engine since its just going to be a highway rig anyway. Maybe a chevy vega rearend would be closer.

Cobb 03-01-2014 07:30 PM

Must be a reason most people go with the VW diesel engine for a diesel conversion? Ive went up 3 tire sizes and seems to curb my top speed to 75mph and at that its lowered 3 inches. Its more of a dog to drive too, but its great in the white stuff. :thumbup:

Maybe they have something on the power block on spike tv? They do a lot of suzuki stuff and it shares a lot with the other models.

oil pan 4 03-02-2014 12:09 AM

The small IDI 1l kubotas would love to have a turbo.
Turbo charging a diesel is a lot easier than putting it on a gas engine. Put it on and go, turning up the fuel rate is recommended, intercooler is optional.
On a gas engine, everything changes.

Freedom92 03-02-2014 09:25 AM

Quote:

Originally Posted by oil pan 4 (Post 413312)
The small IDI 1l kubotas would love to have a turbo.
Turbo charging a diesel is a lot easier than putting it on a gas engine. Put it on and go, turning up the fuel rate is recommended, intercooler is optional.
On a gas engine, everything changes.

Thats what I was thinkin OP4. I just want to keep it around 2200 rpm at 70. I think 50 mpg in that little light weight would be possible

hondaguy72 03-02-2014 02:42 PM

S10 pickup should.have the gear ratios that would work best and best of all they are cheap or free. Jusg check on craigslist.

cRiPpLe_rOoStEr 03-02-2014 05:02 PM

An uncle of mine once had a Suzuki Vitara repowered with the 50hp Volkswagen 1.6IDI and it was actually good, but a turbo would be desirable. Regarding the 4-cyl Kubota, it may eventually be not a bad option at all, but I'd rather get a Volkswagen engine.

Freedom92 03-03-2014 11:45 AM

Quote:

Originally Posted by hondaguy72 (Post 413385)
S10 pickup should.have the gear ratios that would work best and best of all they are cheap or free. Jusg check on craigslist.

As I che k the dimensions the S-10 sounds like a viable option. It is 3" narrower than the tracker but would be corrected with wheel spacers. It may be GAME ON! I would love to try a 3 cylinder v 1105 for the mpg but I know the V2203 will pull it around with no problems.

trooper Tdiesel 03-03-2014 10:55 PM

there are some 4.30 gears that the 3sp autos had, other then that its all 4.62/5.12~ or MUCH higher....

i found a chart of gearing for those things, its long gone and deep but it is on this site...some where..

a 2wd 2 door is about 2,330lb stock 4 doors are around 2,600.

other then the VW idea there's one other set up i can think of..
51hp 1.8L SOHC 4FB1 out of a Isuzu I-mark, being RWD it would be a fairly simpal install.

the engine is about 380lbs and the trans is around 80lbs other then the VW diesel engines with an alloy head, its one of the lightest all cast iron old school diesels out there. set up for highway use.
the 2.2L c223 that the pups have is around 450lbs and uses the same MSG RWD trans just the starter is in a different spot. there meant more as a lugging engine in a truck then a high revving car engine..

the I-mark was around 2,280lbs and the SUV being about 2,650 in a 2 door with the doesel + added aro drag. your looking at a auto that will feal like it's hitting a power wall at around 45/60mph clean up the aro and it would likly be ok tell around 60 going 70+ will be WOT or real close to it....


if your going to swap out the diff with another one, id say 3.73/4.10 for larger tires such as 215/75/15 or 225/235s
smaller you could try a 3.55 diff but with larger tires you will end up driving it as a 4sp....though in some cases it could help economy, as having your trans in direct drive and the diff making up the O\D it can make for a more efficient drive train..

Christ 03-04-2014 11:16 AM

Jeez even my 6500lb F250 diesel only has a 3.55 rear...

Cobb 03-04-2014 05:22 PM

FYI, there use to be a mystery as to why the automatic sidekicks got better mpg than the 5 speeds. Turns out the 4 speed has a higher over drive.

I got a 5 speed and with the gasser it seems to be laboring to do 65 and tops out at 75.

trooper Tdiesel 03-04-2014 11:45 PM

found it.....


Tracker and Sidekick Gear ratios
Models listed oldest to newest, per ratio.
Vitara, Grand Vitara, and XL-7 ratios will be listed elsewhere to simplify this chart
4.30X:1 Non overdrive 2 dr auto 1.6L 16v
4.625:1 2dr auto 1.6L 8v
4.88X:1 Listed elsewhere in the Vitara section
5.125:1 Most all 4dr's (Non Vitara) * Most all 5-speed Track Kick's * Most all Autos with overdrive

5.38X:1 Early model 1.6L 8v 4dr 5-spd Track Kick's (RARE)
5.63X:1 The early 1988-1989 1.3L powered Track Kick (RARE)

skyhiranger:
I have seen several posts asking about what a certain year combo would have, so I made up this list. Hopefully, it is easy to interpret.

This list is for finding the factory axle ratio in North American (US and Canada) 89-98 Trackicks, based on year, body style, engine and tranny combo. As far as I know it is 99.99999999% accurate. There may be some oddball combos out there, and there may be variations to this list in non-North American models, but the list is correct, to the best of my knowledge, for all North American models.

89-98 Trackick gear ratios
Years....2 or 4 door...Engine type...Transmission...Axle ratio
89 2 1.3L carb. 5 speed man. 5.625
89-95 2 1.6L TBI 5 speed man. 5.125
89-95 2 1.6L TBI 3 speed auto 4.625
91 4 1.6L TBI 5 speed man. 5.375
91 4 1.6L TBI 3 speed auto 4.625
92-98 4 1.6L MPFI 5 speed man. 5.125
92-98 4 1.6L MPFI 3 speed auto 4.30
92-98 4 1.6L MPFI 4 speed auto 5.125
94-98 2 1.6L MPFI 5 speed man. 5.125
94-98 2 1.6L MPFI 3 speed auto 4.30
94-98 2 1.6L MPFI 4 speed auto 5.125
96-98 X90 1.6L MPFI auto or man. 4.625

4.30 gears have a 10/43 tooth count
4.625 gears have an 8/37 tooth count
5.125 gears have an 8/41 tooth count
5.375 gears have an 8/43 tooth count
5.625 gears have an 8/45 tooth count

I have personally verified (removed and counted) every combo on the list, except for the 89, 2 door, 1.3L, 5 speed, 5.62 combo and the 91, 4 door, 8V, auto, 8V, 4.625 ratio......but they have been verified by people who have actually removed the ratio from the listed combo.

cj:
FYI in case you come across or are looking for the following and want to confirm them

4.875 gears have a 8/39 tooth count
5.833 gears have a 6/35 tooth count (Calmini)


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