Join Date: Jul 2002
Location: High Wycombe, UK
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I wouldn't bother replacing the engine. The 410 engine isn't much on road but off road is surprisingly capable. If you do want more power then you can get a good performance increase by replacing the stock sidedraught carb with a 1 1/2" carb, in the UK the SU carb is quite popular. A header and free flowing exhaust works well and the 410s points ignition setup can be replaced with an SJ413 distributor and coil.
What type of offroading are you doing? the 410 can be capable with just a set of 215 muds on it. If you go to much bigger tyres then you can regear using LJ80 diffs or fit lower gears to the tcase. I would decide how big a tyre you NEED then lift just enough to fit them.
2000 Vitara 1.6, 2" lift, 3" body lift, winch, snorkel, safari rack, 33" MTs, rear discs, steel front axle, 5:83s
SJ413K Pick Up, 1.6 conversion.