R380 Vs LT77 - Real World Differences? - Page 3 - Defender Source
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  #41  
Old June 7th, 2014, 07:27 PM
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Paul Kennington
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Quote:
Originally Posted by Red90 View Post
As long as it is a G or H suffix, it should be fine.
Can the letter be seen with the transmission in the rig? If so, where is it located?
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  #42  
Old June 7th, 2014, 07:39 PM
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The last letter of the serial number. It, of course, also depends how it was treated. You can kill the synchros in any box with the wrong oil and bad shifting.
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  #43  
Old October 23rd, 2015, 03:36 PM
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Kristian
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Lt77

sorry to revive an old thread. but i have an LT77 and it is grinding into second (sycnro's) and it is leaking, i have called The shop in atlanta and another shop and no one wants to rebuild my tranny they want me to swap to the R380. does anyone know of a shop in atlanta that can help me fix my tranny? i really dont want to swap the tranny's but i would like to get mine rebuild and resealed...any ideas? thanks

Kristian
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  #44  
Old October 23rd, 2015, 07:07 PM
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Quote:
Originally Posted by Kdawg97m3 View Post
sorry to revive an old thread. but i have an LT77 and it is grinding into second (sycnro's) and it is leaking, i have called The shop in atlanta and another shop and no one wants to rebuild my tranny they want me to swap to the R380. does anyone know of a shop in atlanta that can help me fix my tranny? i really dont want to swap the tranny's but i would like to get mine rebuild and resealed...any ideas? thanks Kristian
ashcroft transmission UK spend the $ and get on with life.
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  #45  
Old October 23rd, 2015, 07:15 PM
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if you really, absolutely want it rebuilt, then ship to SWR Automotive (Rob Dassler) in Albuquerque. But I say do yourself a favor and go Ashcroft. Ship to your door for about the same $.
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  #46  
Old October 23rd, 2015, 07:36 PM
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It will cost way more to have it rebuilt locally than to buy one from David Ashcroft, including shipping.
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  #47  
Old October 23rd, 2015, 07:42 PM
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Quote:
Originally Posted by 1of40 View Post
ashcroft transmission UK spend the $ and get on with life.
Yep.

------ Follow up post added October 23rd, 2015 07:44 PM ------

Quote:
Originally Posted by Kdawg97m3 View Post
sorry to revive an old thread. but i have an LT77 and it is grinding into second (sycnro's) and it is leaking, i have called The shop in atlanta and another shop and no one wants to rebuild my tranny they want me to swap to the R380. does anyone know of a shop in atlanta that can help me fix my tranny? i really dont want to swap the tranny's but i would like to get mine rebuild and resealed...any ideas? thanks Kristian
SHP just received a freshly rebuilt LT77 from Ashcroft. Shipping from Orlando to Atlanta shouldn't be too bad. PM me if you want more info.
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  #48  
Old October 23rd, 2015, 08:36 PM
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Ditto to Clay and Marks posts. I (Uncle Doug) am now taking out a second LT77 and going 380 shorty
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  #49  
Old October 23rd, 2015, 10:24 PM
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I am embarrassed to admit I dont know the differences with the R380's. Best I can gather there are three versions, the Disco (different shifter?) NAS and then the "shorty" diesel. I assume the bellhousing is different between the NAS and the ROW/diesels/2.5's
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  #50  
Old October 23rd, 2015, 11:15 PM
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Seven? different arrangments....

1) 4 cylinder diesel. Long bellhousing. Defender. Stock for 300TDI
2) 4 cylinder diesel. Long bellhousing. Discovery/RR. Stock for 300TDI
3) V8. Long bellhousing. Defender.
4) V8. Long bellhousing. Discovery/RR.
5) 4 cylinder diesel, Short bellhousing (same length as 2.5NA, 200TDI), Defender. Built as a replacement for MOD trucks when LT77 went out of production.
6) TD5, Defender
7) TD5, Discovery
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  #51  
Old October 24th, 2015, 09:27 AM
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I have done lots of LT77 replacements to the stumpy R380.
This ends main box transmission issues for the vehicle.
We also put the R380 stumpy behind the Mercedes OM617, Isuzu 4JB1-T, and the Iveco 2.8 TD.
In the old days it was after the LT77 failed, but now it has become a standard practice ahead of time.

I had a fresh unused stumpy here from Ashcroft that I offered up to Jonsey as a loaner until he brought one in to keep his 110 on the road.
Jonsey opted for the cheaper route and went with a rebuilt LT77 that went in the weekend before Uwharrie.
On his way home from Uwharrie, his 110 ended up failing and now is at the famous Uncle Douglas repair barn for an R380 stumpy swap.
Live and learn.
Hopefully those who want reliability will save the trouble of replacing the LT77 and just start out with the R380.
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  #52  
Old October 24th, 2015, 09:41 AM
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IMO... There is nothing wrong with the LT77 as far as reliability as long as you have the later versions G or H suffix. They have a bad rep because the earlier boxes have a fairly small layshaft bearing that likes to fail.
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  #53  
Old October 24th, 2015, 09:49 AM
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Quote:
Originally Posted by rdavisinva View Post
I have done lots of LT77 replacements to the stumpy R380. This ends main box transmission issues for the vehicle. We also put the R380 stumpy behind the Mercedes OM617, Isuzu 4JB1-T, and the Iveco 2.8 TD. In the old days it was after the LT77 failed, but now it has become a standard practice ahead of time. I had a fresh unused stumpy here from Ashcroft that I offered up to Jonsey as a loaner until he brought one in to keep his 110 on the road. Jonsey opted for the cheaper route and went with a rebuilt LT77 that went in the weekend before Uwharrie. On his way home from Uwharrie, his 110 ended up failing and now is at the famous Uncle Douglas repair barn for an R380 stumpy swap. Live and learn. Hopefully those who want reliability will save the trouble of replacing the LT77 and just start out with the R380.
Thanks Robert, the only parts you missed out was the peanut gallery at Galpins egging me on and Shayne on the phone giving his 2c

I would encourage everyone to go 380 route. I mean it makes sense when they say the 380 was an upgrade to a stronger unit from the weaker lt77 with known issues. If you want the real skinny get on the phone or email Dave Ashcroft. He also told me to go R380. Which as Robert points out is what I am doing now.
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  #54  
Old October 24th, 2015, 09:54 AM
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Quote:
Originally Posted by Red90 View Post
IMO... There is nothing wrong with the LT77 as far as reliability as long as you have the later versions G or H suffix. They have a bad rep because the earlier boxes have a fairly small layshaft bearing that likes to fail.
2x. Lots of original later version LT77 boxes still going strong. Look no further than Huff.
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