The 3 vent windscreen was used in the earlier examples original jonga, the Nissan patrol G60. The 2-vents were used later, somewhere in 66-68. There are very few differences between the two, mainly being:
1) 3 vents patrols motor had an external engine breathe, and a long pipe going over the height of the pinton top dead center, and a few holes for venting air at the top. For some reason the Nissan 1-ton carriers used by the Indian army used this engine quite a lot.
The 2 vent Patrol had a Pcv valve layout at the engine brether, therefore wasn't exhausted.
2) steering wheel as well as steering box was different in both. For some reason the Indian jongas used about 3 types of steering boxes, with the earlier ones quite prone to coming lose while on the move. As far as steering wheels are concerned, the Indian VFJ produced both types of steering wheels but lots of different center section horn buttons. It had the following names stamped on the button,
VFJ (some had it stamped in English and some in Hindi)
Patrol (some had it stamped in English and some in Hindi)
Nissan (some had it stamped in English and some in Hindi)
Jonga (some had it stamped in English and some in Hindi).
3) The 3 vent Patrol used a different front axle knuckle joint ( called the rezeppa something joint, but it was prone to wearing out fast, while being probably the strongest joint of all, pound for pound had the lubrication problems not weaken it) , a brass knuckle bearing, a different rear axle shaft design. The 2 vent Patrol had a birfield joint.
4) The speedo guage( the earlier indian jongas used the stock meters, wich were just a pair of big 5" dials, whereas the later jongas had a whole platoon of guages on the guage panel) for the 3 vent Patrol was driven through the front drive engagement seation of the trasfer case instead of the rear section as used in the rest of the 4 wheel drive vehicles. It meant that incase a front hub disconnect is used, the spoodo would stop reading. The 2 vent Patrol corrected that.
5) Fuel tank capacity, 3 vent Patrol had a smaller fuel tank
6) Besides the different no of vents on the windscreen (which could be pushed open to let in fresh air into the automobile interior, much like whats used in the CJ3A, or done by pushing open the glass panle on earlier mahindras), the 3 vent Patrol has split doors on the soft-top models. The doors, with a glass panel that can be rolled up and down, the door had the upper and lower panels, i.e. above and below the round and broader section of the doors starts, bolted by a few bolts, which could be seperated within minutes giving a lower profile to the vehicle when the top is taken off and the windscreen lowered. also, it looks was better than the full door when going TOPLESS.
7)cannot remember more at the moment.
The RCL jonga was used probably only on the 2 windscreen jongas because i haven't come across any 3 vent jongas as yet with the contraption mounted. Contrary to the popular belief, probably few to none jongas used the Anti-tank guns as mounted on the jeeps. I don't remember the name of the gun, but it was some American some 105mm recoiless gun. On the jeep the suspension was re-enforced with another coil spring set rear, whereas the jonga did not use this sort of combination, atleast i never saw one.
The Jonga uses the French Milan wire-guided anti tank missile. The front windscreen is cut in a about 6" wide square section in the middle, with a small 4" height glass panel mounted on the lower most part of the cut-portion, and a U-shape panet welded on the upper portion of the windscreen. It has hooks welded to the front mudguards to mount water sacks, etc to. The driver section was fitted with 2 small seat instead of the bench in the patrol. It has a box built into the center section of both the seats. Underneth the driver's seat is a water tank, with a nice aluminium tank stopper, and crude ancient tap protuding towards the outside of the patrol from the drivers side. The passenger side is mostly used as a gun and ammo spare parts and tools. The rear most section of the patrol, right where the cornors are, is cut up and substituted by just a floor built in diamond sheet for the gun crew to stand. The tub of the rear section is mounted by a contraption to store a few rounds of ready to fire ammo. Also instead of the normal Jonga 70-75 liter fuel tank, the RCL type uses the tank from its larger sibling, the Nissan 1-ton carrier, which has a 110liter fuel cpacity.
I don't have any pictures of Patrols during overhauling, because frankly i was never interested in the patrols P-type motor. Rather i wated a coal burner motor. Some time ago, a workshop manual was avialable on the net which i downloaded, but it, for some unknown reason is missing the engine section, although i can help you with the axle, gearbox, transfercase, steering, wiring, body, etc sections.
But the most important thing to consider even before you go looking for engine overhaul manuals si to please find out engine parts. So far(as far as the lessor available parts are concerned), i could only find 2 crank-rods, 1 differetial cage, 1 stock hitachi carburater, half a stock waterproof distributer, a few fuel pumps, especially the stock Denki/injecto japanese ones, 0=good company pistons and rings,0= good condition gasket set, 0= engine mounts, very few water pump assemblies,etc.
The point is, please find out if all the parts needed for a full overhaul are available before youeven think of opening up the motor.
Take care,
Bikram |