Manual transmission gearing??

[mitch]

I found a manual transmission gear ratio chart in a l300 hand book. seems like there was 2 different stock gearing ratio's. a low ratio and a taller ratio. they both share the same 4th gear. interested in which one mine would have (i assume its the low ratio)and if they could be changed (mine are too low especially 5th) the ratios are pretty close in 5th.. but what about just changing out the 5th gear for a 0.858:1 ? would that increase my hiway speed? Anyone know if this part is even availble? or an even taller 5th?? maybe like 0.600:1 ++ parts from montero/ pajero??

anyone have any experience in this? I would like to be able to cruise @ 120km at 3000rmp versus the the 100km I get now.


trans KM135 or R5M12

1st 4.330:1 or 3.967:1
2nd 2.355:1 or 2.136:1
3rd 1.509:1 or 1.360:1
4th 1.000:1
5th 0.827:1 or 0.856

my model is a P35W-0106713 whatever trans that is??

Mitch

[argo]

Fourth is direct and 5th is OD. It's very likely a constant mesh box so the countershaft and output gear are worn in to each other, therefore changing out a gear is not really an option. Notwithstanding the fact that the cost would be prohibitive.

Bigger tires maybe?

[mitch]

are you talking about an auto trans??? no overdrive on a 5spd that i know of. have 30" tires now.. will go 31" next time.

Mitch

[argo]

0.827:1 and 0.856:1 are both overdrive. Anytime the driver turns less than the driven it is by definition, overdrive. The term "taller" refers to the relationship between the driver and the driven. The "taller " the first number in the ratio [the driver],the lower the gear.

[mitch]

Thanks Argo,

I'll do some further research.. attached is a post from a guy in Aus that had put a taller 5th in a deli trans.. but a gas one.. not sure it would be the same:

The difference in ratios you've quoted could be between 2WD/4WD or between Petrol/Diesel variants. The question you have about lowering the engine rpm at highwat speeds is possible. You only need to change the 5th gear pair, which both sit outside the main body of the box in the extension housing area. I sourced a gearset from a Diesel Triton (L200) which gave a ratio of 0.700:1, to acomplish exactly what you're asking. With 30" tall tyres the overall gearing in 5th became too tall for a 2.0 petrol motor to push up even slight hills. So I fitted a 2.4 petrol motor. Only slightly better, but still not really satisfactory. I looked everywhere for a Mitsubishi gearbox that had the right ratios to get the taller 5th, but eventually found that a gearbox rebuilder kept lots of individual gears for these boxes and had just the pair I wanted in stock. I do remember that one of the new gears had so few teeth on it that the thickness of metal between the root of the teeth and the center bore meant that you could no longer run the roller bearing that's factory fitted, so I got a sleeve turned up to fill the gap. Mechanically it all fitted together fine. After doing the whole thing I realised that if you wanted you could actually do this swap in-car, by removing the rear shaft and transfer case and then removing the extension housing to expose the two gears. Both slide rearward off their shafts. If you are going to run taller tyres I wouldn't recomend this mod. I'm now running a 2.4 petrol with 31" tyres and with factory ratios in the box, the revs are just nice in 5th with small hills not a problem.

can anyone confirm if their '90 delica manual has an R5M21 transmission?

if so, does anyone know if the Pajero, Montero, Raider, etc... share this tranny?

Mitch

[mitch]

Another new Idea...

My Good Friend (just bought a Deli) has had old military jeeps and things and said that he thinks he could source a "diff spliter" that could change the gear ratio before the rear diff that can be changed back to stock with a flip of a switch. I would have to cut my rear drive shaft and mount it on the diff. So it would give me 6th gear and can turn it off to put it in 4x4. rumor has it around $1000

any thoughts? or know where to find something like this?

Mitch

[docsavage]

That rear drive shaft is pretty short, not a lot of room to cut, mount a splitter, and still have the driveline angles for articulation.

BTW Mitch, will you be at the Outdoor Show? I'm heading to Van tomorrow and may visit the show with Shreddie.

James

[BCDelica]

Had the pleasure of seeing Mitch's tricked out ride yesterday, sweet.

I gotta say it's the best color scheme I have seen on a Deli'.

[Mystery Machine]

my model is a P35W-0106713 whatever trans that is??

Hi Mitch,

If you can supply the full Model number from your VIN plate I can probably get you more accurate details, but it sounds more likely that you have a KM147 or V5M21 gearbox...

This means you ratios are as follows:

1) 3.967
2) 2.136
3) 1.360
4) 1.000
5) 0.856

The other ratios you listed were fitted to 2WD vans and only a few 4WD motors.

Hope that helps??

Regards,

Bruce.

P.S. Rear axle ratio is 4.875

P.P.S. Love the wheels!

[mitch]

Hey Bruce,

I'v looked all over th e place for this tranny #.. do know how to find it on the tranny?

im preety sure this is my vin number as i cant find anything else.
(P35W-0106713 )

Yeah im pretty stoked how the wheels turned out.

Mitch

[PolyTek]

I'm going to resurrect this old thread. I spoke to Mitch the other day, and he cited the high 5th gear ratio (hence high rev's at (relatively low) highway speeds as one of the reasons he sold his Delica.

My search for compatible clutches lead me to compatible (shared) transmissions. So, the Delica shares transmissions with the Montero/Montero sport that was made for the US market. I wonder what the gear ratio's were in the US V5M21/V5MT1 (or the 2wd versions, for that matter)? This could possibly allow a relatively simple and cost effective way to improve highway speeds in MT Delicas.

I searched high and low, but was unable to locate any real ratio numbers yesteray. I'll also mention again here that the PDF manuals in the Wiki are not specifically for the Delica, so I would love to confirm the gear ratios of the JDM Delica's that those of us in Canada are driving. I'm not sure if there were different ratios in Delicas sold in the UK, or other parts of Europe, or southeast asia, either.

I did find a Mitsubishi Manual Transmission Manual that isn't in the Wiki (can't seem to attache .PDF or upload to the Wiki, help...), and the excellent AutoZone website which has an excellent online manual for the Montero/Montero sport (no 5 speed gear ratios, however) here: http://www.autozone.com/shopping/repairGuide.htm

AutoZone obviously has other manuals online as well, all for North America models, however.

Any insight in to actual ratios for our Delicas and NA Monteros would be fantastic.

D

[strada-caster]

found some interesting info on this topic.
check the links (my brain hurts too much from reading to sumarize)

135km/h @ 3100 RPM is very intruiging.
http://www.mdocuk.co.uk/forums/viewtopi ... highlight=

http://6g72rwd.forumcircle.com/viewtopic.php?t=15&

can't find anything definite, but somebody else might have better sleuthing skills than I.

Another option we have, is taking a 5th gear set to a good gearing business with relevant info and see what they can do for us. I don't have an extra transmission sitting around to do this though.

[jessef]

Just toss on 31" tires and you have the perfect low-range/highway ratio.

[PolyTek]

I for one don't really want my Delica any higher off the ground than it is already... *maybe* an inch... but that won't get me what I want.

[strada-caster]

Polytek,

I'm assuming by how little information there is in this thread that, nobody around here was able to accomplish this goal by any other means of putting on larger tires (which i already have).

the first link I put in my post didn't have much info, but apparently he got done what we want to do.

Does anyone have gear information on the fifth gear set??
material?
style (helical)?
teeth?
thickness?
center dist between the shafts?
etc