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Home > Maintenance & Modifications > Series 3 2.25 twin SU conversion
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3680
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
Series 3 2.25 twin SU conversion
My dad is currently rebuilding a Series 3 and wanted twin SUs being unable to find a suitable manifold he made his own




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it starts runs smoothly and revs up well waiting bodywork for a proper work out and tune up DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #427154 29th May 2015 9:33pm
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
Looks very neat
are they 1.5 inch

Does it have balance tube between the 2 carbs
Post #427156 29th May 2015 9:37pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3680
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
Munch
yes 1.5s of an MGB, manifold is made up from 2 MGB manifolds and 2 off 2.25 landy ones retains balance pipe and crankcase vent system etc, revs up pretty quick only other engine mod is a tubular exhaust manifold and straight through silencers, doesn't sound much like a landy


Click image to enlarge DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #427159 29th May 2015 9:43pm
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558
England 
Should be good set up when tuned etc

Lots of people dont know that su,s dont like pulsing air intake , they often need a balance tube , so never get them running quite right
my late dad fitted a weber on his series 3 , plus ported and polished the head + electronic ign set up made big difference
Post #427161 29th May 2015 9:51pm
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Pickles



Member Since: 26 May 2013
Location: Melbourne
Posts: 3802
Australia 2013 Defender 90 Puma 2.2 CSW Keswick Green
That is a beautifully detailed engine, if it goes as well as it looks, it'll be a rocket.
Pickles.
Post #427168 29th May 2015 10:47pm
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PCA42



Member Since: 15 Jun 2014
Location: Church Stretton
Posts: 468
England 2008 Defender 110 Puma 2.4 DCPU Tonga Green
Love it!!! Can he make me a one for my SIII? Laughing Pete

2010 Discovery 4 GS TDV6
1972 Series III 88" 2.25P
Post #427184 30th May 2015 12:06am
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steventheplumber



Member Since: 29 Apr 2014
Location: Lincolnshire
Posts: 767
England 1987 Defender 90 200 Tdi HT Keswick Green
Looks very good? Proper job Thumbs Up
Post #427215 30th May 2015 11:26am
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