My New Blog @ WORDPRESS

Hey Guys
From now on, I will be updating all the posts on my new blog.
For everybody's convenience I have added all the old entries of this blog to the newer one.
Here is the LINK


http://harjeevchadha.wordpress.com/

Thanks and Regards
Harjeev

Some Videos of us guys at a recent reccee for a new track on July 17, 2010

Ashish Bhatia's Bushranger!!
a really capable machine



The following videos are of Amit Bhatias MIG
Actually earlier this vehicle was blue on color and was referred to as the MIG!!! Now I am not sure what its called!!!

Coming up an incline.
This climb looked quite difficult to look at at first but after doing it dint feel so bad, after all!!!


The JCB have dug up the kuccha paths around the Aaravali range. We guys say the more the obstacles the better its for us!!!


The following video is the same that the Gypsy King is doing



Finally I'll Leave you with some pics of the reccee!!!

All about Diff Ratios 4.27, 4.88, 5.38 etc etc etc

Hey all
This thing is quite confusing for me as well, so I thought that I might as well share some information that I am still trying to understand, for the benefit of all.
I would at present just tabulate the info as and when I get my hands on it and later on I might put it properly.
Most of the info is from teambhp and I would also be posting the relevant link along with the information I update
Also to note is that I would be changing, editing the info on this page from time to time. Therefore overtime the information on this page might change

The difs can be 5.38, 4.88, 4.22, etc

5.38 gives max torque and lower speed.
4.27 gives less torque and more speed comparatively.

Now, your 4.88 is a perfect compromise for speed and torque. However, this suitable for the OE 215/75/15 tyres which are approx 29.5" in diameter.
Thus, for every rotation of your tyre, your axle moves 4.88 times. Or you can say that your axle needs to rotate 4.88 times to move your tyre by one revolution.
Your 31" tyres now will cover more ground per revolution. Thus you will get more on-road speed. But, when you come to off road terrain, you will loose power since they axle has to work more to rotate the tyre and also the 31" tyre is very heavy.

Thus, to come back to the same efficiency as the original 4.88, when you put 31" tyres, you have to change your dif to 5.38.[/quote]

source

So as per the above I have checked my CJ3B and the diff ratio is 5.38 or 44:8

4.27 is 47/11 and 5.38 is 43/8.

MM540 came with 5.38:1. MM540 / MM550 with XD3P engine came with 4.88:1. Even today, Bolero SLX 4 wheel drive comes with 4.88:1 only.

Source

Let Consider the total Toque Developed including the gearing at each wheel

For KMT-90-4WD & 4.27

(3.986 X 2.46 X 4.27 X 15.5kgm)/4 (no. of Wheels)= 162.2 Kgm per Wheel.

For KMT90-4WD & 5.38 = 204Kgm per Wheel.

The Advantage of 5.38:1 is
1) Better torque on the wheels
2) Better Crawl Speed (Slower the better)
3) compensates the Wheel Speed for taller Tyre (31")

source

Hi Garrett,

New Tyre OD / Old Tyre OD X Diff-Ratio = Corrected Diff-Ratio

31/28(standard for JEEPs) X 4.88 (standard for XD3P) = 5.40:1

Any thing Lower you will Lower End grunt end and gain Top End speed.

Regards,

Arka

source

I take the CJ3B for another OTR (off the road)....

---

Hey Guys

Its been a long time since I updated this thread. Barring some petty issues not much has happened since my last update!!!

I took the CJ3B for another OTR on the 21st of June 2009. It was actually a recce off the Bherampur track(not sure whether its Bherambur or Badshapur, I always get confused between the two But this is the track where we take a left from Haldiram on the NH8). Found a really nice extension of the track and this is where we are planning the forthcoming OTR on July 19th. We guys started early in the morning around 6 and were finished around noon!!!

The CJ3B preformed wonderfully never letting me down. Managed to do all the obstacles with relative ease.
I got a flat tyre. Driver side front!!! I guess I dint get them checked after the Faridabad OTR and went to another OTR after that with just topping up the air pressure. So Changed the tyre. A while later Amit’s jeep also had a flat. His 540 was also there at the Faridabad OTR. Now we were 3 jeeps with only 1 spare tyre to go. Luckily the tyres on all were NDMS 6 X 16’s.
We decided that if we get another flat, we’ll head back home as there’s no point taking unnecessary risk’s.


Just before we were leaving, checked up on the water level and just about less than half a pint was added to the radiator. The outside temperature must have been about 44 degrees but felt much more. It was Very Very HOT. The temp gauge was constantly at 60-65 degrees, occasionally rising upto 80 when were driving slowly or were stationary.
This I perfect I guess??? I can now say that the heating issue is resolved for good!!!

Another OTR another problem & thankgod for the problem....

Hey Guys
I took the CJ3B for another OTR on the 16th May 2009. Although the performance was OK, but the heating issue raised its ugly head once again. I thought that the heating issue was at bay, but as the vehicle was giving a lot of black smoke I decided to get the following job done. Whether this was a blessing in disguise or a curse, only time will tell ;-)

I gave the vehicle to the mechanic in Mayapuri on the 11th of May and got it back the next day. The job list was

• Carburetor Service
• Change the piston rings
  
• Put in a new fuel pump
• Change the electronic fuel pump to UCAL

These job was done and had cost me a total of Rs.4,600!!!
Here are the details
(Head Gasket 120, Chamber Packing 20, 5 Liter Mobil Oil 825, 1 set piston rings 320, 1 hose pipe 50, Misc 350, Fuel Pump 750, Electronic Pump 525, Labor 1600 Kerosene Oil Cleaning 100) Although I gave the vehicle to get rid of the while smoke, I dint know at that time that just by being there for one night, it will catch the old illness once again.

For the next couple of days I took it trice back to Mayapuri to solve the issue, but in vain. So not giving much thought to it I decided to take it for an OTR but wasn't I in for a rude shock and that too a very nasty one.
read on
OTR Day 16th
I left my home with the radiator full of water, picked up my cousin from DLF, and see what. Radiator was almost empty. Reached the meet up point DLF Golf Course, water finish again. I was simply fed up and frustrated. To cut the long story short, all in all the vehicle consumed more than 15-16 liters of water during the entire OTR and on the way back to my home even stalled on ridge road. Imagine 1AM in the morning and your vehicle refuses to move an inch. I was so tired that for a split second my mind flirted with the thought of maybe selling it. But maybe I was lucky, it started after a couple of minutes and I reached back safely.



















17th May 2009 Next Day morning
But next day in the morning I thought that it couldn't be all that bad. After all its a piece machinery and there's nothing that can't be fixed. Also at the same time I decided that Mayapuri is not the place for petrol engines. The fault was not in the 3B, the fault was in Mayapuri. These guys are simply not up to it or they do not understand it. So I called up Jasvinder Singh who is a member of Northern India Off-Road Club (NIOC) and owns a garage in Noida. The mechanic he has is very competent and many of the NIOC veterans vouch for his workmanship.
I called him up early and my vehicle was at his workshop at 11 AM on Sunday the 17th of May 2009.

At the Garage
I went to the workshop with the intention of getting the complete engine overhaul. The things on top of my mind were the heating issue and the slippage of the High-Low lever from High ratio into neutral. So I told him that I just wanted a reliable vehicle and he should do whatever he feels is correct. But at the same time I too told him that I have spent a fortune in first buying 3 vehicles (MM550, CJ3B & WILLYS 3B) so I do not that that much money to spare and he should do the bare essentials.
The best thing I liked is that the mechanic had a look at the vehicle, he simple said that the engine does not require an engine overhaul. WHAT!!!
He said that the certain settings needed to be done like valve timings, tappet settings, radiator was local and needed to be changed and many other things. But the engine dint need an overhaul. I was impressed. Even thought I went there with the intention of doing the complete overhaul, he said that you want to spend the money then spend it, but the engine does not need an overhaul.
So I simply said that do whatever needs to be done and get it working like it should. Flawlessly!!!

28th May, 2009
During the time the vehicle was there

• The radiator has been changed. The old one was leaking from the bottom
• The head gasket was leaking and water was seeping in the 2nd and 3rd chamber. So this has been replaced. Strangely the head gasket was replaced at Mayapuri thrice , but I believe that those gaskets must have been local and were giving way under pressure or wouldn't have been installed properly. But I am not surprised anymore
  
• The Carburetor has been serviced. There was lot of dirt in it. This too was serviced in Mayapuri.
• The transfer along with the gearbox has been overhauled and one of the gears/ rotors was completely worn out and since been changed.
• The engine has been tuned. Tapets &and Valves have been set. (Now to me all this is rocket science I have just heard and reproducing it) ;-))

The work on the CJ3B is now complete. I told Jasvinder to drive around the vehicle for a couple of days and see whether any issue crops up. as I was certainly in no hurry. Also as there was an OTR coming up on Sunday the 31st May, 09, he and me me agreed that he will get the vehicle to the OTR venue and drive it around to see if any more issues remained to be resolved. This way I could drive around in the 550, which I was very eager, and my 3B could also be tested. Further by doing it this way, I was saved the effort of first getting the vehicle from Noida to my home, then driving it to the OTR and god forbid any issue crops up again taking it back to Noida. So this was the best way out.

OTR Day
31st May 2009

Well I would say the the performance of my 3B couldn't be better at the OTR. No heating, no stalling. Nothinig!!!
The CJ3B was driven from Noida to Gorgaon, did the OTR and the terrain was sand, rock etc, so driving was mostly in 4x4 many times needing the low ratio too. No heating NOTHING!!!
I couldn't be happier. After a long time I truly enjoyed my vehicles. The performance of the 550 was great and the 3B was also very well behaved. In fact Jasvinder told be that they filled up the radiator with coolant 3 days back and drove it in Noida for 30-40 kms, then from Noida to Gurgaon, did the OTR and then back to Noida. He din't add a drop of water in it. I was surprised as it was too good to true, but luckily it was.
The 4x4 slippage was finished, the sound of the engine, What sound the sound had vanished and I could simply hear the sound of the fan. Good job accomplished. Now I think why I din't go there earlier. Had I did, I would have saved if not money but at least lots of time and effort.

I brought the vehicle from Noida yesterday back home and was driving at speeds of 70-75km/hr and no heating. Infact the temperature refuses to go above 60. It actually stays between 40-60 and in crawling traffic too, is between 60-80 degrees. Now I think that I need a thermostat as the optimum temperature the engine should run is around 80 degrees or so. But let me enjoy this new found luxury for some days.
HAHAHA
Total bill at the workshop Rs.11,000/- which included the radiator for 4,000 bucks and 2500 for the gearbox and transfer case overhaul. All in all I would rate the job satisfaction 100 out of 100. Infact 110 out of 100.

All comments and suggestions are most welcome.

Here are some pictures of the CJ3B at the 31st May's OTR










Some more random shots

Yours truly ;-))



Chilling out at Rockman's Beer Island post OTR

My MM550

CJ3B goes for the 1st OTR

Hey Guys
I took the 3B for its 1st OTR on the 6th of May09.
It was good fun but as the OTR started very late I couldn't really experiment and get to know the capabilities of my jeep.

Some of the issues that I have faced or am facing are and changes done to the vehicle

• I have added spark plug adapters. As The vehicle is giving alot of white smoke, I thought that this would be a good solution for the time being.
• I have decided to change the engine rings and this will be done next week.
• The status of the heating issue is such like on my way to Gurgaon for the OTR the temperature went up to almost 110 degrees. All this while I was driving at speeds of 60-65 km/hr. But on the way back I drove around 40 ish and the temperature dint go above 80. So is driving slow the solution? The only issue is that it becomes very boring when you are alone and the road in front of you is totally empty. But I am told that once I change the rings I might be able to drive at a little higher speeds.
• The electric pump that I am using is a local make and I am changing that to UCAL electric pump.
  As I am sending the vehicle to the mechanic on Monday, I am changing the complete fuel system. Also I have decided to place the electric fuel pump next to the fuel tank itself. The carburetor will also be overhauled along with the rest of the work.
• I have also decided to change the manual fuel pump too. The problem is that UCAL is not available and the one available is PICKO or something like that.
  
• Last week I had an issue. The oil from the oil filter completely leaked from the jeep. This happened after I started the jeep after 5 days and took one round of my colony at very high revs. This actually happened the 2nd time. So upon discussion with the mechanic he concluded that the oil pressure is too high and he adjusted it. So now on 'idle' the oil pressure remains around '1' and the max it goes to is '4'.Earlier on Idle it used to remain around 4 and upon very low revs used to go to the MAX 7!!!
  
• Many a times, but not always the 4x4 High--Neutral--Low lever slips to Neutral. Also this happens more on high revs and really becomes an issue when off-roading. But When I am on 4x4 low its never slips back to Neutral

So this is the gist of what I am planning to do now. All suggestion/ comments are welcome!!!

Here are some pics of my CJ3B and of OTR
Randeep & Naveen

My CJ3B

Another picture


The night sky


The feast ;-)



My CJ3B royally stuck