 | Home > V8 > how involved is a 2.25petrol to V8 conversion |
 
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| V8_110 Member Since: 23 Apr 2016 Location: Lancashire Posts: 40   
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http://forum.landrovernet.com/showthread.p...2-5-petrol
This might be helpful. |
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17th Jul 2017 1:54pm |
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| Squirdan Member Since: 28 Sep 2013 Location: London Posts: 68 
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thx thats v useful
I have a 4 litre RPI rebuilt engine and gearbox from a 1982 RRC so just a question of finding the right project |
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17th Jul 2017 4:33pm |
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| Blanc Member Since: 14 Jul 2016 Location: Suffolk Posts: 43 |
I've sort of done this while rebuilding my originally 2.5 petrol 90 as a 3.9 v8.
As per the above link, if you want to keep the tunnel and seat box you need to use an LT77 gearbox. The petrol/TDI LT77 has the wrong length input shaft so you need a rare long stick LT77 v8 box as fitted for a short period to Defenders before the R380 came out and also to some range rovers. I managed to get a knackered one and then have Ashcroft combine it with the donor Disco v8 lt77s to make a stronger v8 lt77 for a Defender. I had to use a later gearbox crossmember to get my Rimmer Bros stainless exhaust through but that may just be because of the exhaust. The v8 doesn't do any less mpg than the 2.5 but sounds great and goes like stink. Do it! Any questions. Please ask. David |
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18th Jul 2017 8:24pm |
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| Squirdan Member Since: 28 Sep 2013 Location: London Posts: 68
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thanks David
the gearbox is an LT95 4 spd gearbox and xfr box I also have a fairey overdrive on the shelf would that box fit or not? just trying to work out if I can use them to make a fun landie without spending silly money |
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19th Jul 2017 8:03am |
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| Romadog Member Since: 07 Jul 2011 Location: Powys Posts: 1749 |
LT95 tunnell and floor plates are a rarity, so best not to go that route if you havent got these already
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19th Jul 2017 8:05am |
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| Squirdan Member Since: 28 Sep 2013 Location: London Posts: 68
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thanks. I havent, saying that, they are being chopped out of the RR because ive got an R380 going in that which requires a different tunnel
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19th Jul 2017 8:17am |
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| Blanc Member Since: 14 Jul 2016 Location: Suffolk Posts: 43 |
I think an R380 tunnel is closer in shape to an LT85 than a LT77 version but I never managed to find out definitively if the LT85 would fit in the easier to obtain R380 tunnel.
I decided in the end that i was going to have spend some money to solve the problem by buying parts and I may as well invest it in an lovely fresh Ashcroft gearbox to fit the other bits I already had.. |
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19th Jul 2017 9:46am |
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| epictrail Member Since: 20 Sep 2013 Location: High Wycombe Posts: 395 
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If you wanted someone to do it for you, give Roy Staines a call at JS Landrover 07762 613777. They're near High Wycombe. He's doing a 300TDI defender 110 to 4.2 v8 auto conversion at the moment with video's of the process on utube.
See this thread http://www.defender2.net/forum/topic55766.html |
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19th Jul 2017 10:51am |
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| Squirdan Member Since: 28 Sep 2013 Location: London Posts: 68
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thanks Epic trail. Funnily enough I watched a couple of their vids last night and emailed them this morning
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19th Jul 2017 11:20am |
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| Squirdan Member Since: 28 Sep 2013 Location: London Posts: 68
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thanks to all posters
would you agree that it would be handy if my starting point had disc brakes already fitted (RR axles), PAS, and coil springs all round, plus battery already relocated. Am thinking those are costly bits to do. have seen a 2.25 series 3 with all that already done... cheers |
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19th Jul 2017 3:05pm |
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