Best Driver train configuration... - Defender Source
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  #1  
Old August 23rd, 2016, 07:23 PM
RoverPaisa
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Best Driver train configuration...

Which driver train configuration do you guys feel would be more practical for a 1955 Series 1 86" wheel base? We have a 300TDi to go in the engine bay but we would like to choose the best configuration after engine transmission and transfer case.

The 3 options consist of:


option 1:
LT77 with a LT230 move the transmission and cross member back 86mm and shorten prop shaft. LT230 will need the Ashcroft part time wheel drive kit.

option 2:
R380 with a LT230 move the transmission and cross member back 86mm and shorten prop shaft. LT230 will need the Ashcroft part time wheel drive kit.

option 3:
LT77 with a series Transfer case

We will be updating the front and rear axles to Series 3 axles.

Any other options or notes please feel free to share. Thanks in advance.
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  #2  
Old August 23rd, 2016, 07:28 PM
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Abraham Bell
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If you go with 1 or 2 why would you need the Ashcroft part time four wheel kit? It wouldn't be required.
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  #3  
Old August 23rd, 2016, 07:36 PM
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Quote:
Originally Posted by solarguy View Post
If you go with 1 or 2 why would you need the Ashcroft part time four wheel kit? It wouldn't be required.
No CV's in the normal series front axle.
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  #4  
Old August 23rd, 2016, 08:01 PM
RoverPaisa
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That's right we want to keep the wheels inside the fenders so we will keep the front wheel hubs from a Series 3 axles.
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  #5  
Old August 23rd, 2016, 08:12 PM
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Might as well just stay with the Series transfer case. It is just as strong as the LT230 if not more and you don't need to fart around with things as much. If you are keeping the 4.7s in the axles, get as high a ratio 5th as you can. There are 3 options. Make sure you get a short bellhousing R380, if you go that route.... If you go LT77, make sure it is an "F" suffix or higher. One from a 200TDI Defender would be the best and most cost effective choice as it has the stronger gears and higher 5th gear.
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  #6  
Old August 23rd, 2016, 08:22 PM
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Quote:
Originally Posted by Red90 View Post
Might as well just stay with the Series transfer case. It is just as strong as the LT230 if not more and you don't need to fart around with things as much. If you are keeping the 4.7s in the axles, get as high a ratio 5th as you can. There are 3 options. Make sure you get a short bellhousing R380, if you go that route.... If you go LT77, make sure it is an "F" suffix or higher. One from a 200TDI Defender would be the best and most cost effective choice as it has the stronger gears and higher 5th gear.
Even a Series 1 transfer case is suitable for the LT77? The suffix on our LT77 is an "H".
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  #7  
Old August 23rd, 2016, 08:29 PM
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Quote:
Originally Posted by RoverPaisa View Post
Even a Series 1 transfer case is suitable for the LT77? The suffix on our LT77 is an "H".
"H" is the 200TDI version, so as long as it is the diesel Defender version, it will be a good choice.

You need to use the Ashcroft adapter kit to mate to the Series transfer case. I do not believe there is any problem with it being a Series 1 case. A quick note to Mr. Ashcroft will verify.

http://www.ashcroft-transmissions.co...peed-kits.html
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  #8  
Old August 23rd, 2016, 08:43 PM
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I like the idea of keeping the series tcase + downstream drivetrain as well. This is a series 1
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  #9  
Old August 23rd, 2016, 09:29 PM
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3 with a stumpy R380. Also consider modifying it to be an SI 88" if you need more space. I believe al the difference is in the front axle.
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  #10  
Old August 23rd, 2016, 09:52 PM
RoverPaisa
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I think its much more important to keep the hard top and tub down to the 86" wheel base. We would like to keep the proportions original to the 86" wheel base.
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  #11  
Old August 23rd, 2016, 10:18 PM
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I know you want MB there but suggest you do some digging around for other 86 modified for tdi and similar sized engines.
Like others I'm thinking stumpy style
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  #12  
Old August 23rd, 2016, 10:31 PM
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Quote:
Originally Posted by RoverPaisa View Post
I think its much more important to keep the hard top and tub down to the 86" wheel base. We would like to keep the proportions original to the 86" wheel base.
The only difference is the position of the front axle and the front fenders, the rear tub is the same. No one can tell unless they really know.
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  #13  
Old August 24th, 2016, 06:57 AM
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  #14  
Old August 24th, 2016, 12:54 PM
RoverPaisa
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Ashcroft has no LR77 kits to mate a 5spd to a series TC. Anyone here happen to have one laying around that they are willing to part with?
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