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Rocky Gear Ratios

Tech Talk for Ford, Mazda, Daihatsu & Makes that currently dont have a home.

Moderator: Tiny

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Posts: 75
Joined: Mon May 26, 2003 4:27 pm
Location: Jakarta, Indonesia

Rocky Gear Ratios

Post by JavaJeep »

Does anyone know the ratios for the 5 speed box in a Rocky and what transfer case and diff ratios the Rocky runs ?

I am doing an engine and gearbox swap into a 1962 Mitsubishi J series (Willys Jeep copy)

The engine is a Nissan Pathfinder V6

Transfer case Dana 18 and diffs are Dana 25 and full floater Dana 23.

Adapters are custom made :( but relatively cheap to get done here in Indonesia [T6 aluminium] :)

Image
" I LOVE the smell of napalmed 'Cruzers in the morning. . "

1944/46 MB/CJ2a 'FrankenJeep' waterproofed F-134, Simex 32x9.5x15 Extreme Trekkers, lifted, D25 LockRight locker front, D44 19 spline full Detroit Locker rear
Posts: 2001
Joined: Wed Nov 20, 2002 9:23 am
Location: Melbourne

Post by *BESTY* »

Welcome to the Board Java !

One question...............WHY ??


Why wouldn't you mate up a gearbox and transfer case that gives you options for different gear ratios instead of the Rocky boxes which only come with the factory option ??

Simple example : Suzuki - Large ranges of easily sourced and varied gear ratios OR Toyota - same reasoning.

You vehicle sounds like a 'bit of a hybrid' anyway, with lots of different parts making it go, so why not go for the better options ??
[color=orange] BESTY [/color]




GU4800
Posts: 3099
Joined: Wed Dec 11, 2002 10:55 am
Location: Central Queensland

Post by BundyRumandCoke »

Depending on which motor was in front of the 5 speed, they are

DL42 motor, 1st 3.647, 2nd 2.136, 3rd 1.484, 4th 1.000, 5th 0.860, reverse 4.351

DL52 motor 1st 3.477, 2nd 2.037, 3rd 1.317, 4th 1.000, 5th 0.820, reverse 4.148

Transfer case High 1.297, low 2.370

Diffs 3.363

All straight out of the workshop manual.

Cheers
David
Mud makes excellent toothpaste.
Posts: 75
Joined: Mon May 26, 2003 4:27 pm
Location: Jakarta, Indonesia

Post by JavaJeep »

Change of plans !

The plan now is a turbo diesel and 5 speed out of a Diahatsu Rocky, Dana 18 TCase , a SOA lift and NO MUFFLERS - got a love the sound of that turbo !

Went into the workshop on Saturday and should be finished in August .

I am running 5.38 Dana diffs.

I think the Rocky ratios are good enough - I was getting by with a standard Willys T90 3 speed with a 2.9 first gear !

Power and torque for a Rocky turbo ? 75kW 245 Nm ?
Last edited by JavaJeep on Mon Jun 02, 2003 2:04 am, edited 1 time in total.
" I LOVE the smell of napalmed 'Cruzers in the morning. . "

1944/46 MB/CJ2a 'FrankenJeep' waterproofed F-134, Simex 32x9.5x15 Extreme Trekkers, lifted, D25 LockRight locker front, D44 19 spline full Detroit Locker rear
Posts: 75
Joined: Mon May 26, 2003 4:27 pm
Location: Jakarta, Indonesia

Post by JavaJeep »

Photos of Franken-san heading into the workshop last Saturday

Image

Image

FrankenJeep [44/46 MB/CJ2a hybrid] towing Franken-san , a 62 Mitsubishi/Willys M38 mix
" I LOVE the smell of napalmed 'Cruzers in the morning. . "

1944/46 MB/CJ2a 'FrankenJeep' waterproofed F-134, Simex 32x9.5x15 Extreme Trekkers, lifted, D25 LockRight locker front, D44 19 spline full Detroit Locker rear
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