Dauntless or Kubota |
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52 M38
Member Joined: 26 Nov. 2012 Location: New England Status: Offline Points: 1286 |
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Interesting point my kubota tractor idles just below 1000, I have a distinct feeling it would be unhappy below that. I may need to do some calculations as to what my crawl speed would be. What is the lower rpm for useable power with the kubota?
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Nothing Special
Member Joined: 02 Feb. 2018 Location: Roseville, MN Status: Offline Points: 842 |
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If you are going to use the Jeep to crawl, crawl speed is VERY important! Energy is proportional to the square of the speed, so cutting your actual crawl speed in half means you are hitting the rocks with only 1/4 as much energy.
So if crawling is in the cards, the difference between 1000 and 600 rpm would be very significant (only hitting the rocks 1/3 as hard).
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oldtime
Member Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4139 |
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Direct from post #1....
Actually the L134 should be somewhere near ideal for that sort of useage. I took it that you merely felt the 134 was perhaps too slow when accelerating on city streets. IMHO the Dauntless wins hands down vs both TDI and Diesel engines whenever crawling and or accelerating fast plus sufficient HP for sustained interstate useage. Real world application makes all the difference. |
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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davemacinnh
Member Joined: 15 June 2018 Location: Webster, NH Status: Offline Points: 55 |
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Not a chance the dauntless would beat a tdi in a Cj in crawling and absolutely never in accelerating.
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52 M38
Member Joined: 26 Nov. 2012 Location: New England Status: Offline Points: 1286 |
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The crawl ratio for my setup is 39.7:1. With 31” tires that puts 3mph at just a hair under 1300rpm. 2mph is 860rpm. It would appear without terra-low the kubota will run right around 3mph, the Dauntless comfortably below 2mph, approaching 1mph.
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jeepsterjim
Member Joined: 13 July 2011 Location: lincoln, ca Status: Offline Points: 1272 |
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I like the dauntless/Buick V-6. However I like its big brother better...252 V-6 with TBI. lots of torque. When set up, the motor would idle around 650 rpm. Used this motor along with a SM420, D300 w/low gears, and 4.88s.
Jim
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Jim
CJ-2A - 81299 |
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oldtime
Member Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4139 |
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And the increased idling RPM only serves to amplify Gear Ranging concerns for crawling usage.
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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Millennium falcon
Member Joined: 20 Sep. 2016 Location: Central PA Status: Offline Points: 1521 |
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Haha you apparently have never driven a tuned tdi.... they pull very hard. I personally haven’t driven a duantless Jeep so I’m not going to make any bold statements if I can’t back them up with real life experience. A tuned tdi will roast tires and move you from a-b very quickly with almost zero lag thanks to the variable geometry turbo. Dave: I’m sure you would agree.
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davemacinnh
Member Joined: 15 June 2018 Location: Webster, NH Status: Offline Points: 55 |
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Real life data does support that claim though. It’s fine though if you don’t want to admit that a tdi is a legitimate swap candidate though. There are lots of people that say “look at the data”.(which actually proves a tdi is faster 0-60 anyway. I’m living in the real life where I own a tdi Willys, friends with dauntless and seen the kubotas in action. All cool motors but nothing comes close to the tdi. Haters gonna hate though and I get that.
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davemacinnh
Member Joined: 15 June 2018 Location: Webster, NH Status: Offline Points: 55 |
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Millennium, I have driven the dauntless and they are really nothing special or quick about them.
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oldtime
Member Joined: 12 Sep. 2009 Location: Missouri Status: Offline Points: 4139 |
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Dauntless Buick 225 V6 Horsepower (net)160 @ 4200 Torque (net) 235 @ 2400 Idles down to 500 RPM
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Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963) Zero aftermarket parts |
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52 M38
Member Joined: 26 Nov. 2012 Location: New England Status: Offline Points: 1286 |
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To get back on point, TDI’s are great, I own one, it flies but is irrelevant in this thread.
Do any of the kubota guys worry about the unknown and likely over 8,000 hrs on the V2203 engines?
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TateC
Member Joined: 23 Feb. 2018 Location: SLC, Utah Status: Offline Points: 510 |
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My goodness, for a minute there I thought I was looking on G503 forum.
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Tate Christensen
1941 Ford GP #9687 1943 Willys MB #263100 1944 Ford GPW #234613 1945 Willys CJ2A #10226 |
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chasendeer
Member Joined: 24 Feb. 2012 Location: Napa,CA Status: Online Points: 1080 |
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So true!!
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Millennium falcon
Member Joined: 20 Sep. 2016 Location: Central PA Status: Offline Points: 1521 |
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Oldtime: I’m not trying to win any competition....apparently you are! Haha... but that has been proven over and over on pretty much every post I make. This guy asked for opinions on diesel swaps. I gave m. Opinion based on my personal experience...nothing more. I also didn’t diss any other engines in the process. How dare anyone have a different opinion than you. Haha! You win, you’re smarter and faster than everyone. Haha!
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52 M38
Member Joined: 26 Nov. 2012 Location: New England Status: Offline Points: 1286 |
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Bump.
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hotrod59
Member Joined: 28 Dec. 2017 Location: Boise, ID Status: Offline Points: 107 |
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Just finished my 225 swap, it is a rocket now! It will easily do 65mph+ I kept the T90 in it for now. Haven’t taken it off road much yet, but the little I have it does well. I would go V6.
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1948 Luzon red CJ2A No name yet
1952 CJ3A "SPUDZ" |
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Mark W.
Member Sponsor Member Joined: 09 Nov. 2014 Location: Silverton, OR Status: Offline Points: 7923 |
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WHAT on earth does acceleration and speed have to do with Off road crawling. An engine that can't run at under 900rpm can't move a vehicle as slow as an engine that can run at 600rpm give the same drive train and tires. It just can't. Now if you want to bounce over stuff 2mph faster then cool. BUT its not the same thing.
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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