[bottle]

Great report Arka

[ex670c]

Hi Guys,

A secret about the F4-134 Hurricane

XD4.9P - 12Kgm@2000Rpm

B275 - 12Kgm@1350Rpm

F4-134 - 12Kgm@900Rpm upto 16.5Kgm@2000Rpm

MDI3200 - 16.5Kgm@1400Rpm

http://www.film.queensu.ca/CJ3B/Phot...F4Dyno1962.gif

Regards,

Arka

[GoSlow]

Originally Posted by ex670c

Hi Guys,

A secret about the F4-134 Hurricane

F4-134 - 12Kgm@900Rpm upto 16.5Kgm@2000Rpm

Regards,

Arka

Hi Arka - Since the Hurricane develops such good torque at low rpm then why do you prefer the 540 for OTRs? Just want to understand the driving dynamics of these two vehicles.

Cheers
Ankit

[dwaraka]

Ankit,

Petrol Head my dear. It guzzles. Diesel engine gives minimum of 11-12 kmpl where as petrol engine gives 6-7 kmpl.

[ex670c]

Originally Posted by GoSlow

Hi Arka - Since the Hurricane develops such good torque at low rpm then why do you prefer the 540 for OTRs? Just want to understand the driving dynamics of these two vehicles.

Hi Ankit,

Torque matters, but its not the deciding factor for me. I prefer to have an engine with more RPMs.


Lets look at the engines first.

F4-134 vs XD3P
Weight - 184kgs vs 185kgs (Approx)
Torque - 16kgm vs 15.5Kgm
Max Rpm - 2600 vs 4000/4600 (XD3P with Oil Cooler)
Bhp (DIN70020) 51/55bhp vs 72/76bhp

The petrol engine is quicker, and very aggressive, but runs out of breath.

This was the very reason we started the trend of putting the XD3P in SWB JEEPs in Chennai since 2006, 10 JEEPs down its still impressive.

The Advantages of the CJ3B
1) Agility i.e power to weight or torque to weight.
2) Smaller Wheel

Dis-Advantages
1) SWB Cannot be modified beyond a point i.e no room. (WB &Track)
2) Uncomfortable for anyone taller than 5'7".

Advantages of the MM540
1) You can do significant modifications.
2) More comfortable, better seating position.

Dis-Advantages
1) Not as agile as a SWB JEEP, bigger & Heavier
2) Pronounced Body Roll.

A few Advantages of the diesel engines
1) Prefers higher operating temps. more suited to OTRs
2) Engine can take more abuse.

Regards,

Arka

[GoSlow]

Originally Posted by dwaraka

Ankit,

Petrol Head my dear. It guzzles. Diesel engine gives minimum of 11-12 kmpl where as petrol engine gives 6-7 kmpl.

Dwarka - This is the biggest reason, but in OTRs do you really worry about the fuel consumption? Actually, this was the reason I converted my Gypsy to Diesel - http://www.team-bhp.com/forum/4x4-ve...rsion-4x4.html

Arka - Thanks for your feedback. This helps me understand the differences between the two better. Some people prefer petrol jeeps and some prefer diesels. I wondered why! Would a 3b with XD3P make a perfect offroader?

Cheers
Ankit

[nitrous]

Originally Posted by arka

Max Rpm - 2600 vs 4000/4600 (XD3P with Oil Cooler)

A petrol engine with far lesser revs than a comparable diesel.
Thats a first for me!

Well,noticing the torque figues and the low rev range, Is it the stroke thats responsible, Arka?

[Jaggu]

Thats a torque bomb of an engine! are you sure max RPM is 2600? Is this the same Willys Hurricane engine - Wikipedia, the free encyclopedia ???

The L134 Go Devil was updated with the F-head to become the F134 in 1950. This engine produced 75 hp (55 kW) at 4000 rpm (although it redlines at 3200 rpm) and 114 ft·lbf (154 N·m) at 2000 rpm with a 7.5:1 compression ratio. Bore and stroke dimensions were the same as the L-head engine at 3.125" x 4.375" giving 134.22cuin (2,200 cc).

[ex670c]

Originally Posted by Jaggu

Thats a torque bomb of an engine! are you sure max RPM is 2600? Is this the same Willys Hurricane engine - Wikipedia, the free encyclopedia ???

No I'm not sure, I was just quoting the M&M on a F4-134 Hurricane with a governor for PTO implements.

Also there is some speculation on the CJ3B page that the F4-134 can hold 3100-3300 rpm for a few seconds max.

[nitrous]

With today's petrol, I think you can go upto a 9.0 Compression Ratio, Arka.
And Adjust the timing after it.
What do you say?

[V-16]

Great thread especially for newbies ike me. I also went the same way and bought anMilitary Disposal CJ3B Rcl, but it came in boxes......many boxes. ANyways its been restored now, well almost, a few days to go. I decided to let the original Hurricane engine do the duty. The agility and the noise/vibation factor matters to me a lot. Maybe, some stage later, ill get a 540/550.

Thanks Arka, its wonderful to read about how you got hooked to this 4x4.

[Baburajs]

AHA!!! . Was waiting for something like this for quite some time. I am loving it. Bring it on Arka.

[gonewithwind]

Arka, You got a handsome looking M&M Cj3. Keep it up.

I am sure there is much more you have got to tell us about it. Waiting.

[NDMS]

My favorite vehicle on team-bhp, most probably my favorite vehicle all over. I am posting very late but I never came across this thread and wondered what about this blue ex-airforce jeep which I saw on other threads because I love it. So functional, so basic and simple, I always wanted and still want something exactly like this. Everything is perfect about this jeep.
In my opinion the rims looked better in black.
Arka are those 7.00*16 ndms still available?

Regards

Pranav

[foby.sebastian]

Arka - Just amazing

I took such a long time read the complete posts in thread again and again.

Its really an informative thread for Newbies.

The photos are simply superb,nostalgic too.

Excellent write up , the way you build the write up is just awsome.

I give you 5 star rating Arka for preparing this thread.

Expecting more photos and informative Jeep stories.

Should have changed the name of teh thread to Arka's auto biography.

Thank you for sharing the story.